ShadowLayer and BlurMaskFilter

BlurMaskFilter blurFilter = new BlurMaskFilter(5, BlurMaskFilter.Blur.OUTER);Paint shadowPaint = new Paint();shadowPaint.setMaskFilter(blurFilter);int[] offsetXY = new int[2];Bitmap shadowImage = originalBitmap.extractAlpha(shadowPaint, offsetXY);Canvas c = new Canvas(shadowBitmap);c.drawBitmap(originalBitmap, offsetXY[0], offsetXY[1], null);