2d-inc / flare-flutter Goto Github PK

Load and get full control of your Rive files in a Flutter project using this library.

License: MIT License

Dart 96.88% Java 0.62% Objective-C 1.51% Ruby 0.17% Swift 0.53% Kotlin 0.03% HTML 0.26%

flare-flutter's Introduction

⚠️	Please migrate to the new Rive Flutter runtime. This runtime is for the old Rive (formerly Flare) and will only receive updates for breaking issues with Flutter and egregious bugs. New features and updates are only planned for the new Rive.

Rive 1 (previously Flare)

Rive 1 (previously Flare) offers powerful realtime vector design and animation for app and game designers alike. The primary goal of Flare is to allow designers to work directly with assets that run in their final product, eliminating the need to redo that work in code.

Null Safety

Preview of null safety is now available on pub.dev with version 3.0.0. Include it in your pubspec via:

  dependencies:
    flare_flutter: ^3.0.0-nullsafety.0

Packages

There used to be two Dart packages provided in this repository. flare_dart is no longer maintained as a separate package, it has now been rolled into flare_flutter. Please use only flare_flutter going forward.

Examples

Take a look at the provided example applications.

Please note that only the simple, change_color, and teddy have been updated to null safety.

License

See the LICENSE file for license rights and limitations (MIT).

flare-flutter's People

Contributors

Stargazers

Watchers

Forkers

jplabsio umberto-sonnino dahabit merdomon a7me63azzab scalybur nishantsubedi kadarsh11 nidhishpp baodingfengyun jiefly tarek360 devsmranjan jacob314 bwolfs2 3boodev productinfo ygowell smarthomecode bloody-badboy montinicristian powercen krispypen iamprakash13 abrahamman romdj rayokaah ganeshsp1 hanmingkang strogo dxh8808 vinceramcesoliveros thargyi74 jonathanlight lubaoyilang sherifhasan bitredux morristech raveesh-me mohammedmutafa codesimar subhamdhakal yusangchan ivivisoft andreweugene ericbaruch amediateam maxnice joseraulmail iuraiura879 megasistemas geoffreyporto tshele jangocheng zhengyangma illuer ami9901 mikesoertsz iamsushi ijzepeda khairussani nikkijuk king636 marcioquimbundo errnull ayasra liangzhu91 03050903 peterzainzinger juanunix hectorv12 ch0der suniali xing1p atingtot whatsupcoders mit-mit zmtzawqlp xhw0525 silexcorp conglevn thisisshahzadkhan erfanfarmer awfeequdng ajip21hub cactoos13 btfshadow partnercloudsupport stephenhe rimagahwa redsolver felod hudawei996 flurb thaingo prayugo24 hafijur chimple tdesc remente

flare-flutter's Issues

Animation to specific frame consuming too much CPU

I'm creating a progress percentage animation, where I have an animation with a total of 100 frames at 60 FPS, each frame corresponding to 1%, so I want to animate until a specific frame and then stop.

I got this working by doing this:

class ProgressCircleState extends State<ProgressCircle>
    implements FlareController {
  ActorAnimation _animation;

  @override
  Widget build(BuildContext context) {
    return FlareActor(
      ...
      controller: this,
    );
  }

  @override
  bool advance(FlutterActorArtboard artboard, double elapsed) {
    _animation.apply(widget.progress / 60, artboard, .05);
    return true;
  }

  @override
  void initialize(FlutterActorArtboard artboard) {
    _animation = artboard.getAnimation("progress");
  }

  @override
  void setViewTransform(Mat2D viewTransform) {}
}

It works, but the problem is that even after the animation reaches the frame that I need, it continues running the code at every frame and that is consuming a lot of CPU on the device.

I have noticed that if I only set the animation property when creating the actor, and let it run to 100%, it doesn't consume any CPU after it's done.

Is there a more efficient way of doing that instead of doing it frame by frame? Or maybe detect that it's completed so that I can pause it?

The app will crash when using flare on android version 8 and 8.1 (Oreo)

This seems to be specific to android 8 and 8.1 ie oreo

I have tried multiple examples, any flare animation after a certain time consumes a lot of memory which results in a crash.

I have checked flutter doctor, then used profiling to track memory usage.

Tested on debugging and release both modes.

The issue still persists, the only workaround is to replace a .flr file with a gif or png.

Below is log that you get after the crash.

I/zygote (24760): Do partial code cache collection, code=30KB, data=28KB
I/zygote (24760): After code cache collection, code=30KB, data=28KB
I/zygote (24760): Increasing code cache capacity to 128KB
F/libc (24760): Fatal signal 11 (SIGSEGV), code 1, fault addr 0xb3425fa0 in tid 24785 (1.gpu), pid 24760 (ample.flaredemo)

Build fingerprint: 'motorola/potter_n/potter_n:8.1.0/OPSS28.85-13-5/2f72:user/release-keys'
Revision: 'p3b0'
ABI: 'arm'
pid: 24760, tid: 24785, name: 1.gpu >>> com.example.flaredemo <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0xb3425fa0
r0 98683508 r1 b3425fa0 r2 00000028 r3 00000008
r4 b3425fa0 r5 00000003 r6 b3426000 r7 98683508
r8 0000000c r9 915c9d70 sl fffffffe fp 00000001
ip 00000000 sp 986834c8 lr 98dbd229 pc b3c9ce30 cpsr 60070010
backtrace:
#00 pc 00018e30 /system/lib/libc.so (memcpy+80)
#1 pc 0063b225 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#2 pc 00636d89 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#3 pc 0063f375 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#4 pc 005d1cb5 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#5 pc 005d234b /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#6 pc 005e04bf /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#7 pc 007039c9 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#8 pc 00523219 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#9 pc 0051daf5 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#10 pc 0051ddc9 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#11 pc 0051df55 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#12 pc 0051dcd9 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#13 pc 0051de99 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#14 pc 004fad99 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#15 pc 004fc295 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#16 pc 000101f1 /system/lib/libutils.so (android::Looper::pollInner(int)+572)
#17 pc 0000ff1d /system/lib/libutils.so (android::Looper::pollOnce(int, int*, int*, void**)+32)
#18 pc 0000c40f /system/lib/libandroid.so (ALooper_pollOnce+50)
#19 pc 004fc32f /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#20 pc 004f9f37 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#21 pc 004fb169 /data/app/com.example.flaredemo-zha4HjCGDasN2I5QRaQhfw==/lib/arm/libflutter.so (offset 0x4cb000)
#22 pc 000475cf /system/lib/libc.so (__pthread_start(void*)+22)
#23 pc 0001afe9 /system/lib/libc.so (__start_thread+32)
`

How to stop animation ?

class Pandy extends StatefulWidget {
  @override
  PandyS createState() => PandyS();
}
class PandyS extends State<Pandy> implements FlareController {
  ActorAnimation _rock;
  String animationName = "Untitled";
  int start;
  void initialize(FlutterActorArtboard artboard) {
    _rock = artboard.getAnimation("Untitled");
    artboard.advance(2.0);
    print('initialize');
    start = DateTime.now().millisecondsSinceEpoch;
  }
  void setViewTransform( viewTransform) {
    // print('setViewTransform ${_rock.animatedComponents}');
  }
  bool advance(FlutterActorArtboard artboard, double elapsed) {
    // _rock.apply(1.0, artboard, 0.5);
    var now = DateTime.now().millisecondsSinceEpoch;
    if ((now - start) > 3000) {
      // setState(() {
      //   animationName = "1";
      // });
    } else {
      print('advances ${_rock.isLooping} ${(now - start)}');
    }
    return false;
  }
  Widget build(BuildContext context) {
    print('flr build');
    var flr = new FlareActor("images/test.flr", 
      alignment:Alignment.center, 
      fit:BoxFit.contain, 
      animation: animationName,
      controller: this,
      isPaused: false,
      callback: (r) {
        print(r);
      },
    );
    return flr;
  }
}

Show only last frame when widget is created

I'm checking this https://github.com/2d-inc/Flare-Flutter/blob/master/example/favorite/lib/buttons_row.dart#L51 and I did the same on my flare_checkbox but for a checkbox you may don't want to animate the state when the widget is show for the first time. For example if state is false, playing the off animation when the widget is shown looks weird. So I'm searching a way to only show the last frame when the widget is shown, and on click play the right animation depending on the state.

Any idea how can I implement this ?

When the flare is in the list, the app crashes.

When I put a lot of small size FlareActor animations into a list and scroll, the app is very easy to crash.whether it's on the virtual machine pixel 2 XL (debug) or on my other real device. (release), it is easier to crash on my real device.

Also, when the FlareActor widget is in the list, it is very easy for the image to be misaligned.

My English is not very good, all of the above are translated by google

log message

Build fingerprint: 'google/sdk_google_phone_x86/generic_x86:7.0/NYC/4729343:userdebug/dev-keys' Revision: '0' ABI: 'x86' pid: 28078, tid: 28095, name: 1.gpu >>> com.example.flutterrdiary <<< signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x4400f464 eax 00000000 ebx 8c1d7d20 ecx 00000000 edx 84d03780 esi 6da68f60 edi 4400f430 xcs 00000073 xds 0000007b xes 0000007b xfs 0000003b xss 0000007b eip 8ba3e6b8 ebp 8b07e038 esp 8b07e010 flags 00010206 backtrace: #00 pc 007c26b8 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #01 pc 007c23e3 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #02 pc 007c2bc4 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #03 pc 007be157 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #04 pc 007ca96c /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #05 pc 007cac9a /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #06 pc 00725ff3 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #07 pc 007269a7 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #08 pc 0073c04c /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #09 pc 007b379c /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #10 pc 007b3749 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #11 pc 006372d9 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #12 pc 0090e2a5 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #13 pc 00613a51 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #14 pc 0061939a /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #15 pc 00619796 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #16 pc 00619a72 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #17 pc 0061966e /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #18 pc 00619952 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #19 pc 005e41ff /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #20 pc 005e415e /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #21 pc 005e643e /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #22 pc 00018350 /system/lib/libutils.so (_ZN7android20SimpleLooperCallback11handleEventEiiPv+48) #23 pc 000192f7 /system/lib/libutils.so (_ZN7android6Looper9pollInnerEi+1207) #24 pc 00018d74 /system/lib/libutils.so (_ZN7android6Looper8pollOnceEiPiS1_PPv+68) #25 pc 0000f77c /system/lib/libandroid.so (ALooper_pollOnce+108) #26 pc 005e6541 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #27 pc 005e2b06 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #28 pc 005e4804 /data/app/com.example.flutterrdiary-1/lib/x86/libflutter.so (offset 0x59c000) #29 pc 00074fb2 /system/lib/libc.so (_ZL15__pthread_startPv+210) #30 pc 0002026e /system/lib/libc.so (__start_thread+30) #31 pc 0001e046 /system/lib/libc.so (__bionic_clone+70) Lost connection to device.

pubspec.yaml

dependencies:
flutter:
sdk: flutter

dio: ^2.0.22
json_serializable: ^2.0.2
json_annotation: ^2.0.0
build_runner: ^1.0.0
sqflite: ^1.1.1
path_provider: any
shared_preferences: ^0.5.1+1
image_picker: ^0.5.0+3
provide: ^1.0.2
flutter_svg: ^0.12.0
flare_flutter: ^1.3.4
encrypt: ^2.0.0
cached_network_image: ^0.7.0
flutter_webview_plugin: ^0.3.0+2
flutter_bugly: ^0.1.9

flutter doctor

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.2.1, on Microsoft Windows [Version 10.0.17134.648], locale zh-CN)
[√] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[√] Android Studio (version 3.3)
[√] IntelliJ IDEA Ultimate Edition (version 2018.2)
[√] Connected device (1 available)

• No issues found!
Process finished with exit code 0

How to start animation?

My animation starts automatically, but I cannot figure out how to restart it after it's completed.

Animation not visible the second time

Here is a way to reproduce it https://github.com/jaumard/flare_checkbox/tree/bug/noOn/example

Basically my checkbox is calling the animation "On" and "Off", but when it calls "On" we don't see any animation (tested on iOS simulator). Some animation are working, some other not, so you have 2 animations on the repo, one working and the other not.

Let me know what you think guys :) maybe I'm just doing shit ^^

The actor is broken

The Penguin will be broken when I stop "walk" animation by isPaused parameter.
Please help this. Thank you.

FlareActor color parameter is ignored

Hello,
I created a Flare animation a few months ago : https://www.2dimensions.com/a/tektas/files/flare/literda-logo/preview

I was using this particular animation with FlareActor's color parameter. After updating the latest version (v1.2.1), FlareActor's color parameter does not work.
Here is a minimal example which should paint the animation on a yellow background with an Indigo color:

import 'package:flutter/material.dart';
import "package:flare_flutter/flare_actor.dart";

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flare Demo',
      theme: ThemeData(
        primarySwatch: Colors.yellow,
      ),
      home: MainPage(),
    );
  }
}

class MainPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
        color: Colors.yellow,
        width: 100.0,
        height: 100.0,
        child: FlareActor(
          "assets/literda_logo_anim.flr",
          alignment: Alignment.center,
          fit: BoxFit.contain,
          animation: "Reveal",
          color: Colors.indigo,
        ));
  }
}

Here is the output:

Here is the flutter doctor output:

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel beta, v1.1.8, on Mac OS X 10.13.6 17G5019, locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[✓] iOS toolchain - develop for iOS devices (Xcode 10.1)
[✓] Android Studio (version 3.3)
[✓] IntelliJ IDEA Ultimate Edition (version 2018.1.2)
[✓] VS Code (version 1.30.2)
[✓] Connected device (1 available)

Exporting a Certain Part of an Animation & Curved Paths

There should be an option to export a certain part of an animation, no matter where it starts or ends. Like exporting the part that starts from the 4th second to 6th second. This is needed because it allows making loop animation with complex curves to be much much easier, or rather possible. If you always start exporting from the 1st frame, making loops become much harder, sometimes even impossible if they have complex animation curves. Because you would need to repeat some layers certain seconds apart from each other.

Also, any given object should be able to animatable on a curved path, like in After Effects. Drawing the path that a layer would follow is much easier than calculating X and Y values for that to happen.

Flutter not respecting Even-Odd fill rule for intersecting paths

Intersecting paths in a shape with the even odd fill rule are treated as if the fill rule is set to nonzero in flutter.

Initializing a FlareActor from different sources

Right now a FlareActor can be initialized only with a path of a file from the rootBundle.
I think it would be really useful to support a few other loading modes (e.g. network, string, bytes, ...)
I saw that the FlutterActor is the thing that actually is being loaded async. one possibile approach is to have a constructor with the following signature

FlareActor.asyncBytes(Future<Uint8List> Function() loadBytes, {void Function() onCancel});

The onCancel function would be useful in order to abort a potentially long running loading operation (for example from the network) if the render object has been disposed in the meantime.

Can't Fork other designs on Flare

I'm trying to fork a design on Flare, it prompts me for a new file name and once it creates the file the workspace is empty.

Using Chrome on MacOS

Runtime raster images replacement?

Is Flare-Flutter support runtime raster images replacement(from remote server)?

From Spine Software "Skins allow switching between sets of attachments. They provide organization for attachments and enable animations that change attachments to be reused for different characters."

Loop animation, wait until it finish a lap to start another one

Hey :) I'm having trouble implementing a feature for flutter_splash_screen, my idea was to make a loop animation idle until the initialization of the app is done, then switch to a "finish animation" before pushing the next screen. Problem is that the callback is not called for a loop animation, so I do know when a lap is finished to chain the second animation in a smooth way.

I guess my only way is the FlareController, do you have some code somewhere that does similar things ?

In any way I think it will be nice to have a finishedCallback and a loopCallback, will be very handy :) or at least that the callback is called on each lap

How to modify an animation property from Flutter

I know that you can change some properties for the AnimationActor like the color for example, but can i change the speed for the moving object from flutter or the path of its motion?

Thanks

The animation never start

My flare animation never appears. The screen are blank.

Pubspec:
flare_flutter: ^1.3.6

assets:

assets/OpacityLogo.flr

main.dart:
FlareActor("OpacityLogo.flr", alignment:Alignment.center, fit:BoxFit.contain, animation: "resortesCar"))

Animation: https://www.2dimensions.com/a/Fernando/files/flare/opacitylogo

can anybody help me?

Thanks.
Google translate.

Design tool

Is the design tool downloadable so I can run it on desktop ?

Create project btw ! Really huge gamechanger.

Animation is broken

https://ibb.co/5MVDHjB - unexpected result
https://ibb.co/bvpBV1S - normal result

This problem happens when this animation placed in ListView. But I noticed the corruption like that with other animation that placed in the center of the page. Sometimes it works as expected, but 50 % of time it works unexpectedly

I've tested on several devices - the result is the same
Xiaomi Redmi Note 4 android 7.1
Xiaomi Redmi 5A android 7.1
Samsung S7 android 8.0

version of flare - 1.3.2

It happens most of the time in debug build.
Rarely - on release build, but also happens

FlareActor will run when the The RenderBox detach

FlareActor will be run when FlareActorRenderObject be detach (not dispose). The schedule need to stop when FlareActorRenderObject detach. Thank you.

@OverRide
void attach(PipelineOwner owner) {
super.attach(owner);
// start schedule
}

@OverRide
void detach() {
super.detach();
// stop schedule
}

Latest version - NoSuchMethodError: The method '*' was called on null.

Hello, I am using the latest version of flare_flutter 1.3.0
Reference code : https://github.com/tarek360/Boring-Star-Animation (all same, but version 1.3.0)
The code works fine out of the box, but when I changed the animation, it displayed, but a still image (not a moving animation)
And, this was the error :

E/flutter (24934): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: NoSuchMethodError: The method '*' was called on null. E/flutter (24934): Receiver: null E/flutter (24934): Tried calling: *(0.0) E/flutter (24934): #0 Object.noSuchMethod (dart:core/runtime/libobject_patch.dart:50:5) E/flutter (24934): #1 KeyFrameStrokeEnd.setValue (package:flare_dart/animation/keyframe.dart:1161:33) E/flutter (24934): #2 KeyFrameNumeric.apply (package:flare_dart/animation/keyframe.dart:138:5) E/flutter (24934): #3 PropertyAnimation.apply (package:flare_dart/animation/actor_animation.dart:199:21) E/flutter (24934): #4 ComponentAnimation.apply (package:flare_dart/animation/actor_animation.dart:248:27) E/flutter (24934): #5 ActorAnimation.apply (package:flare_dart/animation/actor_animation.dart:403:26) E/flutter (24934): #6 FlareActorRenderObject._updateAnimation (package:flare_flutter/flare_actor.dart:468:19) E/flutter (24934): #7 FlareActorRenderObject.filename=.<anonymous closure> (package:flare_flutter/flare_actor.dart:245:11) E/flutter (24934): #8 _rootRunUnary (dart:async/zone.dart:1132:38) E/flutter (24934): #9 _CustomZone.runUnary (dart:async/zone.dart:1029:19) E/flutter (24934): #10 _FutureListener.handleValue (dart:async/future_impl.dart:126:18) E/flutter (24934): #11 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:639:45) E/flutter (24934): #12 Future._propagateToListeners (dart:async/future_impl.dart:668:32) E/flutter (24934): #13 Future._complete (dart:async/future_impl.dart:473:7) E/flutter (24934): #14 _SyncCompleter.complete (dart:async/future_impl.dart:51:12) E/flutter (24934): #15 _AsyncAwaitCompleter.complete.<anonymous closure> (dart:async/runtime/libasync_patch.dart:33:20) E/flutter (24934): #16 _rootRun (dart:async/zone.dart:1120:38) E/flutter (24934): #17 _CustomZone.run (dart:async/zone.dart:1021:19) E/flutter (24934): #18 _CustomZone.runGuarded (dart:async/zone.dart:923:7) E/flutter (24934): #19 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:963:23) E/flutter (24934): #20 _rootRun (dart:async/zone.dart:1124:13) E/flutter (24934): #21 _CustomZone.run (dart:async/zone.dart:1021:19) E/flutter (24934): #22 _CustomZone.runGuarded (dart:async/zone.dart:923:7) E/flutter (24934): #23 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:963:23) E/flutter (24934): #24 _microtaskLoop (dart:async/schedule_microtask.dart:41:21) E/flutter (24934): #25 _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5) E/flutter (24934):

The animation :
https://www.2dimensions.com/a/innocent/files/flare/status_success

EDIT : I used both binary and json formats, but no luck :(

EDIT 2 : I used below animation and is WORKING fine :
https://www.2dimensions.com/a/pollux/files/flare/smiley-switch

I don't know what is the problem with my animation :(

flare botched import of svg

not sure where i'm supposed to post this.

anyways, this is the flare file after i drag in my svg:
https://www.2dimensions.com/a/alaricat/files/flare/splash/preview

here is the offending svg: https://svgshare.com/s/9uV

basically, some of it comes through but it's all fucked. i realize this is a problem you guys have been having for a while

Latest flutter/flare using Teddy example NoSuchMethodError: The method '>' was called on null.

This is the result on both android and ios

Pass dynamic parameters to animations

can I pass dynamic values as parameters to animations? an example of this is for building performance charts, for example.

Incompatibility with Dart 2.1

Failed to get the Flare dependencies because they do not run with Dart 2.1

FlareActor breaks flutter_driver integration testing

Having FlareActor in widget tree broke test driver.
https://flutter.dev/docs/cookbook/testing/integration/introduction
flutter/flutter#25975

Error on installing flare_flutter and flare_dart in examples projects

It's seem that we cannot using a library with a dir path pointed to outside of the project

Flutter - Android Release version gets a weird output

Hi, I was testing the flare animation for a few weeks and everything works fine, however when I build my app to a release version for Android some parts of the flare gets scrambled like the image below:

The left column show the image that's rendered the first time I open the app. When I scroll the list it seems to show the proper image (right column).

The animation of the sample project on Android shows an exception

step to reproduce

run example project with Android

device

Android emulator
HUAWEI MATE 10（Other devices are not debugged）

exception

Android shows an exception
iOS shows ok

Flare animation behaves weirdly with Flutter

My Flare Project

This project consists of 2 animations, both of which work perfectly on Flare.

When I export the .flr file in my Flutter project, that's when the animations start behaving in a weird manner.

FlareActor(
        "assets/hummingbird.flr",
        alignment: Alignment.center,
        fit: BoxFit.fitHeight,
        animation: _animation,
      ),

Error assignment in _lastFrameTime

Error stack on executing the example similar to the one provided by the readme.md:

I/flutter (16137): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter (16137): The following _CompileTimeError was thrown building MyHomePage(state: _MyHomePageState#74088):
I/flutter (16137): 'package:flare_flutter/flare_actor.dart': error: line 188 pos 21:
I/flutter (16137): Flare-Flutter/lib/flare_actor.dart:188:21: Error: A value of type 'dart.core::int' can't be assigned
I/flutter (16137): to a variable of type 'dart.core::double'.
I/flutter (16137): Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
I/flutter (16137): _lastFrameTime = 0;
I/flutter (16137): ^
I/flutter (16137): _lastFrameTime = 0;
I/flutter (16137): ^
I/flutter (16137):
I/flutter (16137): When the exception was thrown, this was the stack:
I/flutter (16137): 0 FlareActorRenderObject.isPlaying= (package:flare_flutter/flare_actor.dart:169:13)
I/flutter (16137): 1 FlareActor.createRenderObject (package:flare_flutter/flare_actor.dart:42:27)
I/flutter (16137): 2 RenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4289:28)
I/flutter (16137): 3 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
I/flutter (16137): 4 Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
I/flutter (16137): 5 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
I/flutter (16137): 6 Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
I/flutter (16137): 7 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
I/flutter (16137): 8 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
I/flutter (16137): #9 I/flutter (16137): #10 I/flutter (16137): #11 I/flutter (16137): #12 I/flutter (16137): #13 I/flutter (16137): #14 I/flutter (16137): #15 I/flutter (16137): #16 I/flutter (16137): #17 I/flutter (16137): #18 I/flutter (16137): #19 I/flutter (16137): #20 I/flutter (16137): #21 I/flutter (16137): #22 I/flutter (16137): #23 I/flutter (16137): #24 I/flutter (16137): #25 I/flutter (16137): #26 I/flutter (16137): #27 I/flutter (16137): #28 I/flutter (16137): #29 I/flutter (16137): #30 I/flutter (16137): #31 I/flutter (16137): #32 I/flutter (16137): #33 I/flutter (16137): #34 I/flutter (16137): #35 I/flutter (16137): #36 I/flutter (16137): #37 I/flutter (16137): #38 I/flutter (16137): #39 I/flutter (16137): #40 I/flutter (16137): #41 I/flutter (16137): #42 I/flutter (16137): #43 I/flutter (16137): #44 I/flutter (16137): #45 I/flutter (16137): #46 I/flutter (16137): #47 I/flutter (16137): #48 I/flutter (16137): #49 I/flutter (16137): #50 I/flutter (16137): #51 I/flutter (16137): #52 I/flutter (16137): #53 I/flutter (16137): #54 I/flutter (16137): #55 I/flutter (16137): #56 I/flutter (16137): #57 I/flutter (16137): #58 I/flutter (16137): #59 I/flutter (16137): #60 I/flutter (16137): #61 I/flutter (16137): #62 I/flutter (16137): #63 I/flutter (16137): #64 I/flutter (16137): #65 I/flutter (16137): #66 I/flutter (16137): #67 I/flutter (16137): #68 I/flutter (16137): #69 I/flutter (16137): #70 I/flutter (16137): #71 I/flutter (16137): #72 I/flutter (16137): #73 I/flutter (16137): #74 I/flutter (16137): #75 I/flutter (16137): #76 I/flutter (16137): #77 I/flutter (16137): #78 I/flutter (16137): #79 I/flutter (16137): #80 I/flutter (16137): #81 I/flutter (16137): #82 I/flutter (16137): #83 I/flutter (16137): #84 I/flutter (16137): #85 I/flutter (16137): #86 I/flutter (16137): #87 I/flutter (16137): #88 I/flutter (16137): #89 I/flutter (16137): #90 I/flutter (16137): #91 I/flutter (16137): #92 I/flutter (16137): #93 I/flutter (16137): #94 I/flutter (16137): #95 I/flutter (16137): #96 I/flutter (16137): #97 I/flutter (16137): #98 I/flutter (16137): #99 I/flutter (16137): #100 I/flutter (16137): #101 I/flutter (16137): #102 I/flutter (16137): #103 I/flutter (16137): #104 I/flutter (16137): #105 I/flutter (16137): #106 I/flutter (16137): #107 I/flutter (16137): #108 I/flutter (16137): #109 I/flutter (16137): #110 I/flutter (16137): #111 I/flutter (16137): #112 I/flutter (16137): #113 I/flutter (16137): #114 I/flutter (16137): #115 I/flutter (16137): #116 I/flutter (16137): #117 I/flutter (16137): #118 I/flutter (16137): #119 I/flutter (16137): #120 I/flutter (16137): #121 I/flutter (16137): #122 I/flutter (16137): #123 I/flutter (16137): #124 I/flutter (16137): #125 I/flutter (16137): #126 I/flutter (16137): #127 I/flutter (16137): #128 I/flutter (16137): #129 I/flutter (16137): #130 I/flutter (16137): #131 I/flutter (16137): #132 I/flutter (16137): #133 I/flutter (16137): #134 I/flutter (16137): #135 I/flutter (16137): #136 I/flutter (16137): #137 I/flutter (16137): #138 D/ (16137): HostConnection::get() New Host Connection established 0xe744ec40, tid 16156
D/EGL_emulation(16137): eglMakeCurrent: 0xe7a69aa0: ver 2 0 (tinfo 0xe744fa40)
I/flutter (16137): #139 I/flutter (16137): #140 I/flutter (16137): #141 I/flutter (16137): #142 I/flutter (16137): #143 I/flutter (16137): #144 I/flutter (16137): #145 I/flutter (16137): #146 I/flutter (16137): #147 I/flutter (16137): #148 I/flutter (16137): #149 I/flutter (16137): #150 I/flutter (16137): #151 I/flutter (16137): #152 I/flutter (16137): #153 I/flutter (16137): #154 I/flutter (16137): #155 I/flutter (16137): #156 I/flutter (16137): #157 I/flutter (16137): #158 I/flutter (16137): #159 I/flutter (16137): #160 I/flutter (16137): #161 I/flutter (16137): #162 I/flutter (16137): #163 I/flutter (16137): #164 I/flutter (16137): #165 I/flutter (16137): #166 I/flutter (16137): #167 I/flutter (16137): #168 I/flutter (16137): #169 I/flutter (16137): #170 I/flutter (16137): #171 I/flutter (16137): #172 I/flutter (16137): #173 I/flutter (16137): #174 I/flutter (16137): #175 I/flutter (16137): #176 I/flutter (16137): #177 I/flutter (16137): #178 I/flutter (16137): #179 I/flutter (16137): #180 I/flutter (16137): #181 I/flutter (16137): #182 I/flutter (16137): #183 I/flutter (16137): #184 I/flutter (16137): #185 I/flutter (16137): #186 I/flutter (16137): #187 I/flutter (16137): #188 I/flutter (16137): #189 I/flutter (16137): #190 I/flutter (16137): #191 I/flutter (16137): #192 I/flutter (16137): #193 I/flutter (16137): #194 I/flutter (16137): #195 I/flutter (16137): #196 I/flutter (16137): #197 I/flutter (16137): #198 I/flutter (16137): #199 I/flutter (16137): #200 I/flutter (16137): #201 I/flutter (16137): #202 I/flutter (16137): #203 I/flutter (16137): #204 I/flutter (16137): #205 I/flutter (16137): #206 I/flutter (16137): #207 I/flutter (16137): #208 I/flutter (16137): #209 I/flutter (16137): #210 I/flutter (16137): #211 I/flutter (16137): #212 I/flutter (16137): #213 I/flutter (16137): #214 I/flutter (16137): #215 I/flutter (16137): #216 I/flutter (16137): #217 I/flutter (16137): #218 I/flutter (16137): #219 I/flutter (16137): #220 I/flutter (16137): #221 I/flutter (16137): #222 I/flutter (16137): #223 I/flutter (16137): #224 I/flutter (16137): #225 I/flutter (16137): #226 I/flutter (16137): #227 I/flutter (16137): #228 I/flutter (16137): #229 I/flutter (16137): #230 I/flutter (16137): #231 I/flutter (16137): #232 I/flutter (16137): #233 I/flutter (16137): #234 I/flutter (16137): #235 I/flutter (16137): #236 I/flutter (16137): #237 I/flutter (16137): #238 I/flutter (16137): #239 I/flutter (16137): #240 I/flutter (16137): #241 I/flutter (16137): #242 I/flutter (16137): #243 I/flutter (16137): #244 I/flutter (16137): #245 I/flutter (16137): #246 I/flutter (16137): #247 I/flutter (16137): #248 I/flutter (16137): #249 I/flutter (16137): #250 I/flutter (16137): #251 I/flutter (16137): #252 I/flutter (16137): #253 I/flutter (16137): #254 I/flutter (16137): #255 I/flutter (16137): #256 I/flutter (16137): #257 I/flutter (16137): ════════════════════════════════════════════════════════════════════════════════════════════════════
compiler message: Flare-Flutter/lib/flare_actor.dart:188:21: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _lastFrameTime = 0;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_shape.dart:168:23: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: double maxStroke = 0;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:37:24: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[0] = 1;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:38:24: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[1] = 0;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:39:24: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[2] = 0;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:40:24: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[3] = 1;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:41:24: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[4] = 0;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:42:24: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[5] = 0;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:53:30: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[bidx++] = 1;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:54:30: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[bidx++] = 0;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:55:30: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[bidx++] = 0;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:56:30: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[bidx++] = 1;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:57:30: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[bidx++] = 0;
compiler message: ^
compiler message: Flare-Flutter/lib/flare/actor_skin.dart:58:30: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[bidx++] = 0;
compiler message: ^
7.1s ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4772:32)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
_TheatreElement.mount (package:flutter/src/widgets/overlay.dart:493:16)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4667:14)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3782:11)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3666:16)
Element.rebuild (package:flutter/src/widgets/framework.dart:3508:5)
ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3635:5)
ComponentElement.mount (package:flutter/src/widgets/framework.dart:3630:5)
Element.inflateWidget (package:flutter/src/widgets/framework.dart:2920:14)
Element.updateChild (package:flutter/src/widgets/framework.dart:2723:12)
RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:884:16)
RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:855:5)
RenderObjectToWidgetAdapter.attachToRenderTree. (package:flutter/src/widgets/binding.dart:801:17)
BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2235:19)
RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:800:13)
_WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&RendererBinding&WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:689:7)
runApp (package:flutter/src/widgets/binding.dart:731:7)
main (file:///home/th4t/test_flare/lib/main.dart:3:16)
_startIsolate. (dart:isolate/runtime/libisolate_patch.dart:286:19)
_RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:169:12)

Clipping not working

In the Flare editor clipping works fine. In Flutter not anymore (the whole image is displayed and no clipping applied)

We're using flare_flutter: ^1.3.2

Animation freezes after navigating using 1.3.7+

Hello! I have some looped animations on some screens in my app, they work when we enter the screen, but if we push another route and then pop the animation is frozen.
So it looks like this:

SCREEN_WITH_LOOPED_ANIMATION - works
push another route (with or without an animation, if there is an animation it works fine)
pop to SCREEN_WITH_LOOPED_ANIMATION - animation doesn't play

I'm using Flutter master channel, so ~1.4.12 and the latest flare pub 1.3.8, works fine with 1.3.7
Any idea? Also tested with flutter beta and stable channel

NoSuchMethodError: The method '[]' was called on null.

Hey.

I'm having trouble parsing my Flare file in the flutter: I get a weird error The method '[]' was called on null.

Flutter code:

child: FlareActor(
                    "resources/animations/animated_house.flr",
                    animation: "Enter transition",
                  ),

Stacktrace:

[ERROR:flutter/shell/common/shell.cc(184)] Dart Error: Unhandled exception:
    NoSuchMethodError: The method '[]' was called on null.
    Receiver: null
    Tried calling: [](0)
    #0      Object.noSuchMethod (dart:core/runtime/libobject_patch.dart:50:5)
    #1      JSONReader._readArrayOffset (package:flarecode/flare/json_reader.dart:59:22)
    #2      JSONReader.readFloat32ArrayOffset (package:flarecode/flare/json_reader.dart:45:10)
    #3      KeyFramePathVertices.read (package:flarecode/flare/animation/keyframe.dart:699:14)
    #4      PropertyAnimation.read (package:flarecode/flare/animation/actor_animation.dart:148:38)
    #5      ComponentAnimation.read (package:flarecode/flare/animation/actor_animation.dart:230:61)
    #6      ActorAnimation.read (package:flarecode/flare/animation/actor_animation.dart:422:30)
    #7      ActorArtboard.readAnimationsBlock (package:flarecode/flare/actor_artboard.dart:561:30)
    #8      ActorArtboard.read (package:flarecode/flare/actor_artboard.dart:310:11)
    #9      Actor.readArtboardsBlock (package:flarecode/flare/actor.dart:160:22)
    #10     Actor.load (package:flarecode/flare/actor.dart:139:11)
    #11     FlutterActor.loadFromBundle.<anonymous closure> (package:flarecode/flare.dart:507:13)
    #12     _RootZone.runUnary (dart:async/zone.dart:1379:54)
    #13     _FutureListener.handleValue (dart:async/future_impl.dart:129:18)
    #14     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:642:45)
    #15     Future._propagateToListeners (dart:async/future_impl.dart:671:32)
    #16     Future._complete (dart:async/future_impl.dart:476:7)
    #17     _SyncCompleter.complete (dart:async/future_impl.dart:51:12)
    #18     _AsyncAwaitCompleter.complete (dart:async/runtime/libasync_patch.dart:28:18)
    #19     _completeOnAsyncReturn (dart:async/runtime/libasync_patch.dart:295:13)
    #20     PlatformAssetBundle.load (package:flutter/src/services/asset_bundle.dart)
    <asynchronous suspension>
    #21     FlutterActor.loadFromBundle (package:flarecode/flare.dart:506:16)
    <asynchronous suspension>
    #22     FlareActorRenderObject.filename= (package:flarecode/flare_actor.dart:208:13)
    #23     FlareActor.createRenderObject (package:flarecode/flare_actor.dart:44:9)
    #24     RenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4482:28)
    #25     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
    #26     Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
    #27     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
    #28     Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
    #29     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
    #30     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
    #31     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
    #32     Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
    #33     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
    #34     Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
    #35     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
    #36     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11)
    #37     ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
    #38     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
    #39     Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
    #40     SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14)
    #41     Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
    #42     Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
    #43     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
    #44     Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
    #45     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)

Flutter file:
https://www.2dimensions.com/a/bvantur/files/flare/animated-house-2/preview

Also, I have noticed that in preview door doesn't get opened as they get opened inside of a Flare editor. I have tried exporting .flr file as Binary and JSON format.

UX suggestion

How to undo or delete without keyboard.please make flare more tablet friendly.

Multiple Paths under a Shape don't invalidate

If multiple Paths are nested under a single Shape have different keyframed values for each Path, the Shape won't invalidate any of the underlying Paths, and thus won't update.

A simple fix for this would be to add in ActorNode.update():

if ((dirt & TransformDirty) == TransformDirty) {
    updateTransform();
    if(this.parent != null && this.parent is FlutterActorShape)
    {
        this.parent.invalidateShape();
    }
}

How to reverse the animation ?

I want it first display the animation and then do it in reverse, but i have no idea how to accomplish this

Animation not work when you set isPaused value from true to flase

FlareActor(
"assets/Penguin.flr",
alignment: Alignment.center,
fit: BoxFit.cover,
animation: "walk",
isPaused: _isPaused,
)
Step :

set _isPaused = false
set _isPaused = true
set _isPaused = false

The Animation not running

Reason:
The method updatePlayState() In FlareActorRenderObject
_frameCallbackID must set null after cancelFrameCallbackWithId

  if (_frameCallbackID != null) {
    SchedulerBinding.instance.cancelFrameCallbackWithId(_frameCallbackID);
    _frameCallbackID = null; // reset _frameCallbackID 
  }

The _frameCallbackID will be recreate when isPaused = false
Please Help to fixed it, Thank you

Error while loading animation

Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter (30584): more information in this error message to help you determine and fix the underlying cause.
I/flutter (30584): In either case, please report this assertion by filing a bug on GitHub:
I/flutter (30584): https://github.com/flutter/flutter/issues/new?template=BUG.md
I/flutter (30584):
I/flutter (30584): When the exception was thrown, this was the stack:
I/flutter (30584): #2 Color.withOpacity (dart:ui/painting.dart:187:12)
I/flutter (30584): #3 FlutterGradientFill.getPaint (package:flarepack/flare.dart:239:30)
I/flutter (30584): #4 FlutterActorShape.draw (package:flarepack/flare.dart:126:31)
I/flutter (30584): #5 FlutterActorArtboard.draw (package:flarepack/flare.dart:526:18)
I/flutter (30584): #6 FlareActorRenderObject.paint (package:flarepack/flare_actor.dart:422:17)
I/flutter (30584): #7 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2088:7)
I/flutter (30584): #8 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter (30584): #9 _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter (30584): #10 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2088:7)
I/flutter (30584): #11 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter (30584): #12 _RenderFlex&RenderBox&ContainerRenderObjectMixin&RenderBoxContainerDefaultsMixin.defaultPaint (package:flutter/src/rendering/box.dart:2273:15)
I/flutter (30584): #13 RenderFlex.paint (package:flutter/src/rendering/flex.dart:931:7)
I/flutter (30584): #14 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2088:7)
I/flutter (30584): #15 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter (30584): #16 _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter (30584): #17 RenderDecoratedBox.paint (package:flutter/src/rendering/proxy_box.dart:1955:11)
I/flutter (30584): #18 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2088:7)
I/flutter (30584): #19 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter (30584): #20 _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter (30584): #21 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2088:7)
I/flutter (30584): #22 PaintingContext._repaintCompositedChild (package:flutter/src/rendering/object.dart:128:11)
I/flutter (30584): #23 PaintingContext.repaintCompositedChild (package:flutter/src/rendering/object.dart:96:5)
I/flutter (30584): #24 PipelineOwner.flushPaint (package:flutter/src/rendering/object.dart:855:29)
I/flutter (30584): #25 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:283:19)
I/flutter (30584): #26 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:677:13)
I/flutter (30584): #27 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:219:5)
I/flutter (30584): #28 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:990:15)
I/flutter (30584): #29 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:930:9)
I/flutter (30584): #30 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:842:5)
I/flutter (30584): #31 _invoke (dart:ui/hooks.dart:154:13)
I/flutter (30584): #32 _drawFrame (dart:ui/hooks.dart:143:3)
I/flutter (30584): (elided 2 frames from class _AssertionError)

Animation file from flare is https://www.2dimensions.com/a/sagarshah/files/flare/logo_flutter

Multiple assignment errors Int to double

Same of #6

Flare-Flutter/lib/flare/actor_shape.dart:138:26: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: double maxStroke = 0;

Flare-Flutter/lib/flare/actor_skin.dart:31:28: Error: A value of type 'dart.core::int' can't be assigned to a variable of type 'dart.core::double'.
compiler message: Try changing the type of the left hand side, or casting the right hand side to 'dart.core::double'.
compiler message: _boneMatrices[0] = 1;

type 'FlutterColorFill' is not a subtype of type 'ActorNode' in type cast

Hi, first I would like to thank you for this amazing project, truly amazing :)

I/flutter (10799): ══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter (10799): The following _CastError was thrown during a scheduler callback:
I/flutter (10799): type 'FlutterColorFill' is not a subtype of type 'ActorNode' in type cast
I/flutter (10799): 
I/flutter (10799): When the exception was thrown, this was the stack:
I/flutter (10799): #0      KeyFrameOpacity.setValue (package:flare_dart/animation/keyframe.dart:371:32)
I/flutter (10799): #1      KeyFrameNumeric.applyInterpolation (package:flare_dart/animation/keyframe.dart:134:5)
I/flutter (10799): #2      PropertyAnimation.apply (package:flare_dart/animation/actor_animation.dart:207:21)
I/flutter (10799): #3      ComponentAnimation.apply (package:flare_dart/animation/actor_animation.dart:248:27)
I/flutter (10799): #4      ActorAnimation.apply (package:flare_dart/animation/actor_animation.dart:403:26)
I/flutter (10799): #5      FlareActorRenderObject.beginFrame (package:flare_flutter/flare_actor.dart:328:23)
I/flutter (10799): #6      _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:988:15)
I/flutter (10799): #7      _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleBeginFrame.<anonymous closure> (package:flutter/src/scheduler/binding.dart:904:11)
I/flutter (10799): #8      __InternalLinkedHashMap&_HashVMBase&MapMixin&_LinkedHashMapMixin.forEach (dart:collection/runtime/libcompact_hash.dart:367:8)
I/flutter (10799): #9      _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleBeginFrame (package:flutter/src/scheduler/binding.dart:902:17)
I/flutter (10799): #10     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleBeginFrame (package:flutter/src/scheduler/binding.dart:832:5)
I/flutter (10799): #14     _invoke1 (dart:ui/hooks.dart:223:10)
I/flutter (10799): #15     _beginFrame (dart:ui/hooks.dart:162:3)
I/flutter (10799): (elided 3 frames from package dart:async)

It happens when i try to transform the visibility of a FlareActor. I set the percent visible with a gesture detector.

          Transform(
            transform: new Matrix4.translationValues(
                0.0, 50.0 * (1.0 - widget.percentVisible), 0.0),
            child: new Padding(
              padding: new EdgeInsets.only(top: 20.0, bottom: 10.0),
              child: FlareActor(
                "assets/animation.flr",
                alignment: Alignment.center,
                fit: BoxFit.contain,
                animation: 'idle',
              ),
            ),
          )

Kind regards,
Luis

deprecate mat2d.sign - folks should use double.sign instead

Flare-Flutter/flare_dart/lib/math/mat2d.dart

Lines 6 to 8 in 307ee21

    
           double sign(double value) { 
        
             return value > 0.0 ? 1.0 : -1.0; 
        
           }

https://api.dartlang.org/stable/2.1.0/dart-core/double/sign.html

The getter 'iterator' was called on null

When creating a FlareActor with one specific animation I get this error: The getter 'iterator' was called on null.

This is the Flare file that causes the problem: https://www.2dimensions.com/a/uxteam/files/flare/progress_circle_v2

And this is the code, it's very simple:

import 'package:flare_flutter/flare_actor.dart';
import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        body: Container(
      decoration: BoxDecoration(color: Colors.purple),
      child: Container(
        height: 300,
        child: FlareActor(
          "assets/progress_circle.flr",
          alignment: Alignment.center,
          fit: BoxFit.contain,
          animation: "progress",
        ),
      ),
    ));
  }
}

This is the full error stack:

Initializing gradle...                                              1,2s
Resolving dependencies...                                           7,1s
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done                        14,3s
Built build\app\outputs\apk\debug\app-debug.apk.
Installing build\app\outputs\apk\app.apk...                         2,5s
D/EGL_emulation( 7074): eglCreateContext: 0xb20b8e40: maj 3 min 0 rcv 3
D/EGL_emulation( 7074): eglMakeCurrent: 0xb20b8e40: ver 3 0 (tinfo 0x975ba5b0)
I/Choreographer( 7074): Skipped 34 frames!  The application may be doing too much work on its main thread.
D/EGL_emulation( 7074): eglMakeCurrent: 0xaa805900: ver 3 0 (tinfo 0xaa803880)
I/flutter ( 7074): ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter ( 7074): The following NoSuchMethodError was thrown during paint():
I/flutter ( 7074): The getter 'iterator' was called on null.
I/flutter ( 7074): Receiver: null
I/flutter ( 7074): Tried calling: iterator
I/flutter ( 7074):
I/flutter ( 7074): When the exception was thrown, this was the stack:
I/flutter ( 7074): #0      Object.noSuchMethod (dart:core/runtime/libobject_patch.dart:50:5)
I/flutter ( 7074): #1      FlutterActorShape.path (package:flare_flutter/flare.dart:61:28)
I/flutter ( 7074): #2      FlutterActorShape.draw (package:flare_flutter/flare.dart:108:26)
I/flutter ( 7074): #3      FlutterActorArtboard.draw (package:flare_flutter/flare.dart:529:18)
I/flutter ( 7074): #4      FlareActorRenderObject.paint (package:flare_flutter/flare_actor.dart:438:17)
I/flutter ( 7074): #5      RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #6      PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #7      _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #8      RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #9      PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #10     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #11     RenderDecoratedBox.paint (package:flutter/src/rendering/proxy_box.dart:1980:11)
I/flutter ( 7074): #12     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #13     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #14     _RenderCustomMultiChildLayoutBox&RenderBox&ContainerRenderObjectMixin&RenderBoxContainerDefaultsMixin.defaultPaint (package:flutter/src/rendering/box.dart:2273:15)
I/flutter ( 7074): #15     RenderCustomMultiChildLayoutBox.paint (package:flutter/src/rendering/custom_layout.dart:361:5)
I/flutter ( 7074): #16     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #17     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #18     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #19     _RenderInkFeatures.paint (package:flutter/src/material/material.dart:491:11)
I/flutter ( 7074): #20     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #21     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #22     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #23     RenderPhysicalModel.paint.<anonymous closure> (package:flutter/src/rendering/proxy_box.dart:1730:88)
I/flutter ( 7074): #24     ClipContext._clipAndPaint (package:flutter/src/painting/clip.dart:29:12)
I/flutter ( 7074): #25     ClipContext.clipRRectAndPaint (package:flutter/src/painting/clip.dart:49:5)
I/flutter ( 7074): #26     RenderPhysicalModel.paint (package:flutter/src/rendering/proxy_box.dart:1730:17)
I/flutter ( 7074): #27     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #28     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #29     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #30     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #31     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #32     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #33     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #34     PaintingContext._repaintCompositedChild (package:flutter/src/rendering/object.dart:128:11)
I/flutter ( 7074): #35     PaintingContext.repaintCompositedChild (package:flutter/src/rendering/object.dart:96:5)
I/flutter ( 7074): #36     PaintingContext._compositeChild (package:flutter/src/rendering/object.dart:190:7)
I/flutter ( 7074): #37     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:171:7)
I/flutter ( 7074): #38     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #39     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #40     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #41     RenderAnimatedOpacity.paint (package:flutter/src/rendering/proxy_box.dart:909:17)
I/flutter ( 7074): #42     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #43     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #44     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #45     RenderFractionalTranslation.paint (package:flutter/src/rendering/proxy_box.dart:2441:13)
I/flutter ( 7074): #46     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #47     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #48     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #49     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #50     PaintingContext._repaintCompositedChild (package:flutter/src/rendering/object.dart:128:11)
I/flutter ( 7074): #51     PaintingContext.repaintCompositedChild (package:flutter/src/rendering/object.dart:96:5)
I/flutter ( 7074): #52     PaintingContext._compositeChild (package:flutter/src/rendering/object.dart:190:7)
I/flutter ( 7074): #53     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:171:7)
I/flutter ( 7074): #54     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #55     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #56     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #57     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #58     RenderOffstage.paint (package:flutter/src/rendering/proxy_box.dart:2919:11)
I/flutter ( 7074): #59     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #60     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #61     _RenderStack&RenderBox&ContainerRenderObjectMixin&RenderBoxContainerDefaultsMixin.defaultPaint (package:flutter/src/rendering/box.dart:2273:15)
I/flutter ( 7074): #62     RenderStack.paintStack (package:flutter/src/rendering/stack.dart:594:5)
I/flutter ( 7074): #63     RenderStack.paint (package:flutter/src/rendering/stack.dart:602:7)
I/flutter ( 7074): #64     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #65     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #66     __RenderTheatre&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #67     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #68     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #69     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #70     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #71     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #72     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #73     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #74     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #75     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #76     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #77     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #78     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #79     RenderCustomPaint.paint (package:flutter/src/rendering/custom_paint.dart:562:11)
I/flutter ( 7074): #80     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #81     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #82     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:122:15)
I/flutter ( 7074): #83     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #84     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:173:13)
I/flutter ( 7074): #85     RenderView.paint (package:flutter/src/rendering/view.dart:178:15)
I/flutter ( 7074): #86     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:2094:7)
I/flutter ( 7074): #87     PaintingContext._repaintCompositedChild (package:flutter/src/rendering/object.dart:128:11)
I/flutter ( 7074): #88     PaintingContext.repaintCompositedChild (package:flutter/src/rendering/object.dart:96:5)
I/flutter ( 7074): #89     PipelineOwner.flushPaint (package:flutter/src/rendering/object.dart:855:29)
I/flutter ( 7074): #90     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:283:19)
I/flutter ( 7074): #91     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:692:13)
I/flutter ( 7074): #92     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:219:5)
I/flutter ( 7074): #93     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:990:15)
I/flutter ( 7074): #94     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:930:9)
I/flutter ( 7074): #95     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.scheduleWarmUpFrame.<anonymous closure> (package:flutter/src/scheduler/binding.dart:751:7)
I/flutter ( 7074): #104    _Timer._runTimers (dart:isolate/runtime/libtimer_impl.dart:382:19)
I/flutter ( 7074): #105    _Timer._handleMessage (dart:isolate/runtime/libtimer_impl.dart:416:5)
I/flutter ( 7074): #106    _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:171:12)
I/flutter ( 7074): (elided 8 frames from package dart:async)
I/flutter ( 7074):
I/flutter ( 7074): The following RenderObject was being processed when the exception was fired:
I/flutter ( 7074):   FlareActorRenderObject#03c05
I/flutter ( 7074):   creator: FlareActor ← ConstrainedBox ← Container ← DecoratedBox ← Container ← MediaQuery ←
I/flutter ( 7074):   LayoutId-[<_ScaffoldSlot.body>] ← CustomMultiChildLayout ← AnimatedBuilder ← DefaultTextStyle ←
I/flutter ( 7074):   AnimatedDefaultTextStyle ← _InkFeatures-[GlobalKey#4e969 ink renderer] ← ⋯
I/flutter ( 7074):   parentData: <none> (can use size)
I/flutter ( 7074):   constraints: BoxConstraints(0.0<=w<=360.0, h=300.0)
I/flutter ( 7074):   size: Size(360.0, 300.0)
I/flutter ( 7074): This RenderObject has no descendants.

image png error!

when I add a png image ,there is an error.

E/flutter (11979): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: type 'ActorNode' is not a subtype of type 'ActorDrawable' in type cast
E/flutter (11979): #0 KeyFrameDrawOrder.apply (package:flare_dart/animation/keyframe.dart:450:61)
E/flutter (11979): #1 PropertyAnimation.apply (package:flare_dart/animation/actor_animation.dart:199:21)
E/flutter (11979): #2 ComponentAnimation.apply (package:flare_dart/animation/actor_animation.dart:248:27)
E/flutter (11979): #3 ActorAnimation.apply (package:flare_dart/animation/actor_animation.dart:403:26)
E/flutter (11979): #4 FlareActorRenderObject._updateAnimation (package:flare_flutter/flare_actor.dart:471:19)
E/flutter (11979): #5 FlareActorRenderObject.filename=. (package:flare_flutter/flare_actor.dart:248:11)
E/flutter (11979): #6 _rootRunUnary (dart:async/zone.dart:1132:38)
E/flutter (11979): #7 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
E/flutter (11979): #8 _FutureListener.handleValue (dart:async/future_impl.dart:126:18)
E/flutter (11979): #9 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:639:45)
E/flutter (11979): #10 Future._propagateToListeners (dart:async/future_impl.dart:668:32)
E/flutter (11979): #11 Future._complete (dart:async/future_impl.dart:473:7)
E/flutter (11979): #12 _SyncCompleter.complete (dart:async/future_impl.dart:51:12)
E/flutter (11979): #13 _AsyncAwaitCompleter.complete (dart:async/runtime/lib/async_patch.dart:28:18)
E/flutter (11979): #14 _completeOnAsyncReturn (dart:async/runtime/lib/async_patch.dart:294:13)
E/flutter (11979): #15 Actor.load (package:flare_dart/actor.dart)
E/flutter (11979):
E/flutter (11979): #16 FlutterActor.loadFromBundle (package:flare_flutter/flare.dart:595:18)
E/flutter (11979):
E/flutter (11979): #17 FlareActorRenderObject.filename= (package:flare_flutter/flare_actor.dart:228:13)
E/flutter (11979): #18 FlareActor.createRenderObject (package:flare_flutter/flare_actor.dart:43:9)
E/flutter (11979): #19 RenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4497:28)
E/flutter (11979): #20 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2954:14)
E/flutter (11979): #21 Element.updateChild (package:flutter/src/widgets/framework.dart:2757:12)
E/flutter (11979): #22 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4875:14)
E/flutter (11979): #23 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2954:14)
E/flutter (11979): #24 MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4981:32)
E/flutter (11979): #25 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2954:14)
E/flutter (11979): #26 Element.updateChild (package:flutter/src/widgets/framework.dart:2757:12)
E/flutter (11979): #27 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3746:16)
E/flutter (11979): #28 Element.rebuild (package:flutter/src/widgets/framework.dart:3558:5)
E/flutter (11979): #29 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3715:5)
E/flutter (11979): #30 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3863:11)
E/flutter (11979): #31 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3710:5)
E/flutter (11979): #32 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2954:14)
E/flutter (11979): #33 Element.updateChild (package:flutter/src/widgets/framework.dart:2757:12)
E/flutter (11979): #34 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4875:14)
E/flutter (11979): #35 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2954:14)
E/flutter (11979): #36 Element.updateChild (package:flutter/src/widgets/framework.dart:2757:12)
E/flutter (11979): #37 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3746:16)
E/flutter (11979): #38 Element.rebuild (package:flutter/src/widgets/framework.dart:3558:5)
E/flutter (11979): #39 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3715:5)
E/flutter (11979): #40 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3710:5)
E/flutter (11979): #41 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2954:14)
E/flutter (11979): #42 Element.updateChild (package:flutter/src/widgets/framework.dart:2757:12)
E/flutter (11979): #43 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4875:14)
E/flutter (11979): #44 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2954:14)
E/flutter (11979): #45 Element.updateChild (package:flutter/src/widgets/framework.dart:2757:12)
E/flutter (11979): #46 SingleChildRenderObjectElement.mou
I/AwareBitmapCacher(11979): init lrucache size: 2097152 pid=11979
I/.dx.flutterapp(11979): Starting profile saver IsSaveProfileNow end.

Weird flickering

I just tried the Filip demo but it's constantly flickering.

It's only in debug mode, not in release mode.
And I got the problem on a Pixel 2XL and a Samsung S8
I don't have the problem on a Pixel 2 and a Pixel 3

Animation not changing when no keyframes

I have a Flare file with two animations: idle and moving. Idle is just a static figure, with no movement.

If in Flutter I change the animation assigned to the actor from moving to idle, nothing happens and it still shows the moving one.

The only way I've found of fixing this was adding "fake" keyframes to the idle animation.

Is this the expected behaviour?

The sample code (dirty one, I was playing around 😄)

class _MyHomePageState extends State<MyHomePage>
    with SingleTickerProviderStateMixin {
  static const double STEP = 300;
  static const String ANIMATION_IDLE = "Idle";
  static const String ANIMATION_MOVING = "MovingRight";

  AnimationController _controller;
  double _currentSize = 100;
  String _animation = ANIMATION_IDLE;

  @override
  void initState() {
    super.initState();
    _controller =
        AnimationController(vsync: this, duration: Duration(seconds: 1));
    _controller.addListener(() {
      setState(() {
        if (_controller.status == AnimationStatus.completed) {
          _animation = ANIMATION_IDLE;
        }
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Stack(
        children: <Widget>[
          Container(),
          Container(
            margin: EdgeInsets.only(bottom: 130),
            height: 150,
            width: _currentSize + (_controller.value ?? 0) * STEP,
            decoration: BoxDecoration(
              color: Colors.green,
              borderRadius: BorderRadius.only(
                bottomRight: Radius.circular(10),
                topRight: Radius.circular(10),
              ),
            ),
          ),
          Positioned(
            left: -130,
            child: Container(
              width: 160,
              height: 240,
              margin: EdgeInsets.only(
                  bottom: 240,
                  left: _currentSize + (_controller.value ?? 0) * STEP),
              child: FlareActor(
                "assets/golf.flr",
                animation: _animation,
              ),
            ),
          ),
          Row(
            children: <Widget>[
              RaisedButton(
                child: Text("Move!"),
                onPressed: () {
                  _controller.forward(from: 0);
                  _animation = ANIMATION_MOVING;
                },
              ),
              RaisedButton(
                child: Text("Reset!"),
                onPressed: () {
                  setState(() {
                    _controller.reset();
                  });
                },
              ),
            ],
          ),
        ],
        alignment: AlignmentDirectional.bottomStart,
      ),
    );
  }
}

Multiple Animations Simultaneously

On Flare online tool, there's an option of playing multiple animation sets simultaneously. Like you make several animation and hit play button next to each of them. How do we do that in dart?

'ActorNode' is not a subtype of type 'ActorDrawable' in type cast

Hi!
When trying to run an animation of my Flare file, the following exception is thrown:

I/flutter (19843): ══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter (19843): The following _CastError was thrown during a scheduler callback:
I/flutter (19843): type 'ActorNode' is not a subtype of type 'ActorDrawable' in type cast
I/flutter (19843): 
I/flutter (19843): When the exception was thrown, this was the stack:
I/flutter (19843): #0      KeyFrameDrawOrder.apply 
package:flare_dart/animation/keyframe.dart:450
I/flutter (19843): #1      KeyFrameDrawOrder.applyInterpolation 
package:flare_dart/animation/keyframe.dart:443
I/flutter (19843): #2      PropertyAnimation.apply 
package:flare_dart/animation/actor_animation.dart:207
I/flutter (19843): #3      ComponentAnimation.apply 
package:flare_dart/animation/actor_animation.dart:248
I/flutter (19843): #4      ActorAnimation.apply 
package:flare_dart/animation/actor_animation.dart:403
I/flutter (19843): #5      FlareActorRenderObject.beginFrame 
package:flare_flutter/flare_actor.dart:328
I/flutter (19843): #6      _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback 
package:flutter/…/scheduler/binding.dart:1008
I/flutter (19843): #7      _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleBeginFrame.<anonymous closure> 
I/flutter (19843): #8      __InternalLinkedHashMap&_HashVMBase&MapMixin&_LinkedHashMapMixin.forEach (dart:collection/runtime/lib/compact_hash.dart:367:8)
I/flutter (19843): #9      _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleBeginFrame 
package:flutter/…/scheduler/binding.dart:922
I/flutter (19843): #10     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleBeginFrame 
package:flutter/…/scheduler/binding.dart:852
I/flutter (19843): #14     _invoke1 (dart:ui/hooks.dart:233:10)
I/flutter (19843): #15     _beginFrame (dart:ui/hooks.dart:172:3)
I/flutter (19843): (elided 3 frames from package dart:async)
I/flutter (19843): 
I/flutter (19843): 
I/flutter (19843): This exception was thrown in the context of a scheduler callback. When the scheduler callback was
I/flutter (19843): _registered_ (as opposed to when the exception was thrown), this was the stack:
I/flutter (19843): #0      new _FrameCallbackEntry.<anonymous closure> 
package:flutter/…/scheduler/binding.dart:108
I/flutter (19843): #1      new _FrameCallbackEntry 
package:flutter/…/scheduler/binding.dart:111
I/flutter (19843): #2      _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.scheduleFrameCallback 
package:flutter/…/scheduler/binding.dart:444
I/flutter (19843): #3      FlareActorRenderObject.updatePlayState 
package:flare_flutter/flare_actor.dart:181
I/flutter (19843): #4      FlareActorRenderObject.beginFrame 
package:flare_flutter/flare_actor.dart:305
I/flutter (19843): #5      _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback 
package:flutter/…/scheduler/binding.dart:1008
I/flutter (19843): #6      _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleBeginFrame.<anonymous closure> 
package:flutter/…/scheduler/binding.dart:924
I/flutter (19843): #7      __InternalLinkedHashMap&_HashVMBase&MapMixin&_LinkedHashMapMixin.forEach (dart:collection/runtime/lib/compact_hash.dart:367:8)
I/flutter (19843): #8      _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleBeginFrame 
I/flutter (19843): #9      _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleBeginFrame 
package:flutter/…/scheduler/binding.dart:852
I/flutter (19843): #13     _invoke1 (dart:ui/hooks.dart:233:10)
I/flutter (19843): #14     _beginFrame (dart:ui/hooks.dart:172:3)
I/flutter (19843): (elided 3 frames from package dart:async)
I/flutter (19843): ════════════════════════════════════════════════════════════════════════════════════════════════════

Steps to reproduce:

Export https://www.2dimensions.com/a/marcelgarus/files/flare/murderers:-logo to a .flr file
Include that file into a Flutter app: FlareActor('images/logo.flr', animation: 'intro')

Versions:
I'm using the newest version of the flare_flutter package (1.3.3).
Output of flutter doctor -v:

[✓] Flutter (Channel master, v1.3.10-pre.42, on Linux, locale en_US.UTF-8)
    • Flutter version 1.3.10-pre.42 at /home/marcel/flutter
    • Framework revision c942ed4813 (28 minutes ago), 2019-03-14 09:26:44 -0700
    • Engine revision 8b1a299ed5
    • Dart version 2.2.1 (build 2.2.1-dev.1.0 674fd0e060)

[!] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at /home/marcel/Android/Sdk
    • Android NDK location not configured (optional; useful for native profiling
      support)
    • Platform android-28, build-tools 28.0.3
    • Java binary at:
      /home/marcel/.local/share/JetBrains/Toolbox/apps/AndroidStudio/ch-0/182.51
      99772/jre/bin/java
    • Java version OpenJDK Runtime Environment (build
      1.8.0_152-release-1248-b01)
    ✗ Android license status unknown.
      Try re-installing or updating your Android SDK Manager.
      See https://developer.android.com/studio/#downloads or visit
      https://flutter.io/setup/#android-setup for detailed instructions.

[✓] Android Studio (version 3.1)
    • Android Studio at /opt/android-studio
    • Flutter plugin version 27.1.1
    • Dart plugin version 173.4700
    • Java version OpenJDK Runtime Environment (build
      1.8.0_152-release-1024-b01)

[✓] Android Studio (version 3.3)
    • Android Studio at
      /home/marcel/.local/share/JetBrains/Toolbox/apps/AndroidStudio/ch-0/182.51
      99772
    • Flutter plugin version 32.0.1
    • Dart plugin version 182.5124
    • Java version OpenJDK Runtime Environment (build
      1.8.0_152-release-1248-b01)

[!] Android Studio (version 3.0)
    • Android Studio at /opt/android-studio-preview
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[!] IntelliJ IDEA Ultimate Edition (version 2018.3)
    • IntelliJ at
      /home/marcel/.local/share/JetBrains/Toolbox/apps/IDEA-U/ch-0/183.5429.30
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • For information about installing plugins, see
      https://flutter.io/intellij-setup/#installing-the-plugins

[✓] VS Code (version 1.30.2)
    • VS Code at /usr/share/code
    • Flutter extension version 2.24.0

[✓] Connected device (1 available)
    • ONEPLUS A6013 • ca50b254 • android-arm64 • Android 9 (API 28)

! Doctor found issues in 3 categories.

Flare is not exporting correctly in Flutter

Hello.

firstly, this is the flare file https://www.2dimensions.com/a/uggy/files/flare/burgersplash-2/preview
secondly, there is a circle there that for some reason does not show in the preview. and when I export it, and put it in flutter, only two of all objects are shown (the bottom bun, and the top closed bun).

FYI, in the flutter app, it used to work a week ago. perhaps there was an update of some sort?

this is the code that I have been using:

`
import 'package:flare_flutter/flare_actor.dart';

FlareActor("assets/BurgerSplash 2.flr",
animation: "new_splash",
color: Colors.white,
fit: BoxFit.contain,
alignment: Alignment.center),`

Flare files randomly lose SVG elements

We created Flare files from 2Dimensions Flare tool by first importing SVG files and then exporting as .flr file.
Files are loaded using the FlareActor from Flare-Flutter package in our app.

The issue that we are seeing is that although the files work as expected in first load, on subsequent loading of the same file they randomly lose some of the elements of the SVG file.
No exceptions/warnings are thrown that we can use to debug this issue.

Flare Flutter version:
^1.2.3
Flutter version:
Flutter 1.2.1 • channel beta • https://github.com/flutter/flutter.git
Framework • revision 8661d8aecd (3 weeks ago) • 2019-02-14 19:19:53 -0800
Engine • revision 3757390fa4
Tools • Dart 2.1.2 (build 2.1.2-dev.0.0 0a7dcf17eb)

	double sign(double value) {
	return value > 0.0 ? 1.0 : -1.0;
	}