Drawable 开发者_如何学编程d = new BitmapDrawable(BitmapFactory.decodeResource(
getResources(), R.drawable.ic_watch));
d.setColorFilter(new LightingColorFilter(color, lightenColor));
imageView.setImageDrawable(d);
On Android 2.2 (emulator) and 2.3 (N1) setColorFilter() works fine. Why doesn't it work on 2.1 (tested on emulator)? Another Android bug?
You need to make your Bitmap
mutable.
// make a mutable Bitmap
Bitmap immutableBitmap = BitmapFactory.decodeResource(getResources(),
R.drawable.ic_watch);
Bitmap mutableBitmap = immutableBitmap.copy(Bitmap.Config.ARGB_8888, true);
// you have two bitmaps in memory, so clean up the mess a bit
immutableBitmap.recycle(); immutableBitmap=null;
Drawable d = new BitmapDrawable(mutableBitmap);
// mutate it
d.setColorFilter(new LightingColorFilter(color, lightenColor));
imageView.setImageDrawable(d);
You can see this problem cropping up over here, too.
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