devunwired / textdrawable

TextDrawable implementation and sample use project

TextDrawable

This repository contains an implementation of TextDrawable enclosed within a sample project demonstrating its use. TextDrawable is a Drawable object used to display text content and is intended for use on the Android mobile platform.

Usage

For a specific discussion of how TextDrawable can be used, please refer to this blog post.

Contribution

If you have additions or changes you would like to see made to this implementation, please feel free to fork the repository and submit a pull request.

License

The code supplied here is covered under the MIT Open Source License:

Copyright (c) 2012 Wireless Designs, LLC

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

textdrawable's Issues

Erro on image.setImageDrawable(drawable);

java.lang.RuntimeException: Unable to start activity ComponentInfo{br.org.fbb.baldecheio/br.org.fbb.baldecheio.ListaCalculos}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at br.org.fbb.baldecheio.ListaCalculos$PlaceholderFragment.onCreateView(ListaCalculos.java:102)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1786)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:953)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1136)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:739)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1499)
at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:548)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1171)
at android.app.Activity.performStart(Activity.java:5241)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2157)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
            at android.app.ActivityThread.access$800(ActivityThread.java:135)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5001)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
            at dalvik.system.NativeStart.main(Native Method)

How can use this textdrawable for ShapeDrawable, Shapes like OvalShape

I'm trying to put text into ShapeDrawable

TextDrawable d = new TextDrawable(this);
d.setText("SAMPLE TEXT\nLINE TWO");
d.setTextAlign(Layout.Alignment.ALIGN_CENTER);

ShapeDrawable sDrawableref = new ShapeDrawable(new OvalShape());

sDrawableref.setBackroundDrawable(d) //not possible

how can use this TextDrawable for Shapes like OvalShape, RectShape ?

OvalShape oshape=OvalShape();

sDrawableref.setBackroundDrawable(d)//not possible

More Info: http://stackoverflow.com/questions/25401981/how-to-display-text-in-android-canvas-shapedrawable-with-in-the-rectshape-or-ova/25422331#25422331

TextDrawable.getOpacity() Must be one of: PixelFormat.

In TextDrawable:

public int getOpacity() {
return mTextPaint.getAlpha();
}

Does not pass Android Inspection :
Must be one of: PixelFormat.UNKNOWN, PixelFormat.TRANSLUCENT, PixelFormat.TRANSPARENT, PixelFormat.OPAQUE.

Rounding Error in Text Measure

There is an error in the measurement code that truncates the measured width instead of rounding up. As a result, some text prematurely wraps since the width is 1pixel short.

Using a ColorStateList does not update color on state changed

The color of the text does not update when used with a ColorStateList:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true" android:color="@color/gray_6"/>
    <item android:state_selected="true" android:color="@color/gray_6"/>
    <item android:state_focused="true" android:color="@color/gray_6"/>
    <item android:color="@color/highlight_blue"/>
</selector>

textDrawable.setTextColor(getResources.getColorStateList(R.color.highlight_text));

This can be fixed by invalidating the view on state changed:

@Override
protected boolean onStateChange(int[] state) {
    // Upon state changes, grab the correct text color
    if (updateTextColors(state)) {
        invalidateSelf();
        return true;
    }
    return false;
}

I've tested this on 4.0.4, 4.4.2 and 6.0.1. Happy to send a PR if you'd like.