I have 2 images, one on top of the other. I paint a circle in the
front-image with xfermode to let the image bellow show through.
I realized this with 2 views in a RelativeLayout. The front-view acts as
"mask" and is a custom view.
The problem: Works well in 4.x, but on 2.x the circle is black, instead of
transparent.
The code:
@Override
public void onDraw(Canvas canvas){
super.onDraw(canvas);
c2.drawCircle(X, Y, 50, pTouch);
Paint new_paint = new Paint();
new_paint.setXfermode(new PorterDuffXfermode(Mode.SRC_ATOP));
rect.set (0, 0, getWidth(), getHeight());
canvas.drawBitmap(overlay, null, rect, new_paint);
}
And c2 was initialized to a canvas with bitmap "overlay", like this:
Bitmap overlay;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inScaled = false;
overlay = BitmapFactory.decodeResource(getResources(), R.drawable.overlay,
options);
//...
overlay = Bitmap.createScaledBitmap(overlay, newWidth, newHeight, false);
c2 = new Canvas(overlay);
c2.drawBitmap(overlay, null, rect, filterPaint);
Thanks!
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