marcelgarus / implicitly_animated_list

A Flutter widget that implicitly animates a list whenever it rebuilds with new items.

Hello, world! 👋

I'm Marcel Garus (he/him), a student at the Hasso Plattner Institute.

In the open-source world, I work mostly on low-level things such as Rust, Assembly, or Zig. I love inventing new programming languages such as Candy, Martinaise, Soil, Mehl, Dungbeetle. Sometimes, I write articles on my blog.

📫 Don't hesitate to get in touch with me! You can reach me on Telegram or via other contact options.

implicitly_animated_list's Issues

Can this list be made as grridview?

As for now the list works well giving listview but can this be made as a gridview?

Does it handle Dismissible List items?

About to try this package. Hope it handles Dismissible widgets https://api.flutter.dev/flutter/widgets/Dismissible-class.html

`RangeError` in README example

Putting the example code from README.md in an otherwise empty MaterialPageRoute results in an error:

════════ Exception caught by widgets library ═══════════════════════════════════
The following RangeError was thrown building:
RangeError (index): Invalid value: Valid value range is empty: 0

When the exception was thrown, this was the stack
#0      List.[]  (dart:core-patch/growable_array.dart:149:60)
#1      _ImplicitlyAnimatedListState.build.<anonymous closure>  (package:implicitly_animated_list/implicitly_animated_list.dart:121:52)
#2      SliverAnimatedListState._itemBuilder 
package:flutter/…/widgets/animated_list.dart:983
#3      SliverChildBuilderDelegate.build 
package:flutter/…/widgets/sliver.dart:446
#4      SliverMultiBoxAdaptorElement._build.<anonymous closure> 
package:flutter/…/widgets/sliver.dart:1260
...
════════════════════════════════════════════════════════════════════════════════

After hot reloading, the four ListTiles at least show up, but there's still an error:

════════ Exception caught by widgets library ═══════════════════════════════════
RangeError (index): Invalid value: Not in range 0..3, inclusive: 4
════════════════════════════════════════════════════════════════════════════════

Seems like the first problem is fixed in a fork: https://github.com/Xenomer/implicitly_animated_list/commit/69a0f841fd0d022285e8cf7df4d83cba12687f30

Bug report

Even the sample code doesn't work properly, how did you release it? Please check your code.

feat: add a optional separatorBuilder

This awesome library is sadly missing a way of simply adding spacing or other widgets inbetween the lists widgets, like Listviews separatorBuilder argument.

Publish new versions

I did some changes, to solve #1. Would be nice when you publish a new version to the pub.dev platform with:

$ pub publish

I also could create an automated pipeline, if needed.

Removing an item

How can I remove an item? If I just remove it from the List it triggers this error:

══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following IndexError was thrown building:
RangeError (index): Index out of range: index must not be negative: -1