Android Mask bitmap on canvas gen a black space

Question

I have a mask bitmap with a half is red color and ones is transparent like this https://www.dropbox.com/s/931ixef6myzusi0/s_2.png

I want to use mask bitmap to draw c

Answer 1

Bitmap finalMasking = stackMaskingProcess(imageBitmap, bitmapMasking);


private Bitmap stackMaskingProcess(Bitmap _originalBitmap, Bitmap _maskingBitmap) {
        try {
            if (_originalBitmap != null)
            {
                int intWidth = _originalBitmap.getWidth();
                int intHeight = _originalBitmap.getHeight();
                resultMaskBitmap = Bitmap.createBitmap(intWidth, intHeight, Bitmap.Config.ARGB_8888);
                getMaskBitmap = Bitmap.createScaledBitmap(_maskingBitmap, intWidth, intHeight, true);
                Canvas mCanvas = new Canvas(resultMaskBitmap);
                Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
                paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
                mCanvas.drawBitmap(_originalBitmap, 0, 0, null);
                mCanvas.drawBitmap(getMaskBitmap, 0, 0, paint);
                paint.setXfermode(null);
                paint.setStyle(Paint.Style.STROKE);
            }
        } catch (OutOfMemoryError o) {
            o.printStackTrace();
        }
        return resultMaskBitmap;
    }