I convert a view in a bitmap using drawing cache. But when I use a
transparent background in the view, the bitmap doesn't show. The code:
//View v = inflate etc.
v.setDrawingCacheEnabled(true);
v.setLayoutParams(new
LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT));
v.measure(
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
v.layout(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());
v.buildDrawingCache(true);
if (v.getDrawingCache() != null) {
bitmap = Bitmap.createBitmap(v.getDrawingCache());
}
This works as long as I use an opaque color as background of my view, like:
android:background="#ffffff"
But as soon I put some transparency, like
android:background="#88ffffff"
or don't use background at all, the bitmap doesn't show anything (there are
some other views with content inside, which should show).
I also tried adding this line:
v.setDrawingCacheBackgroundColor(0x00000000);
with some different colors. No effect.
I need a transparent background for this view. What do I do to get it also
in the bitmap?
Thanks in advance.
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