Android change widget drawable opacity

Asked Apr 02 '15 at 18:33

Active Apr 02 '15 at 18:33

Viewed 677 times

I want to change the widget background opacity, which is defined by a drawable including a color code, programmatically in the onEnabled method.

This is the drawable:

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <corners android:radius="5dp"/>
    <solid android:color="#FFFFFF"/>
</shape>

I want to change the color opacity programmatically, how can I do that? I already tried using:

Drawable drawable = getResources().getDrawable(R.drawable.widget_shape);
drawable.setAlpha(80);

But without success

asked Apr 02 '15 at 18:33

qwertz

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Try solid color prefix alpha like #80FFFFFF – IshRoid Apr 02 '15 at 18:39
I want it to be chageable by the user in the config screen, so setting it in the drawable is not an option – qwertz Apr 02 '15 at 18:50
Then create shape programmatically, or try to call invalidate bitmap after applying alpha – IshRoid Apr 02 '15 at 18:59
How would I do that? – qwertz Apr 02 '15 at 19:01
Actually it is big task create Rect programmatically positing Rect etc, you can try simple yourView.getBackground().setAlpha(45); – IshRoid Apr 02 '15 at 19:08
And how should I use this method in the widget? you have to change views using remoteviews – qwertz Apr 02 '15 at 19:25
Oh! for widget you should try http://stackoverflow.com/a/28207221/1881611 – IshRoid Apr 02 '15 at 19:27

Android change widget drawable opacity

0 Answers0