旋转位图图像上的阴影

Question

以下是我的代码，

Paint mShadow = new Paint();
mShadow.setAntiAlias(true); 
mShadow.setShadowLayer(10, 10,10, Color.BLACK); 
canvas.save(); 
canvas.rotate((int)degrees,  100,  100);
canvas.drawBitmap(_image,200,200, mShadow);
canvas.restore();

尝试过，但阴影也会旋转。
如何让影子保持在同一个方向？

Answer 1

尝试这样：

Paint mShadow = new Paint();
mShadow.setAntiAlias(true); 
mShadow.setShadowLayer(10, 10,10, Color.BLACK); 

canvas.drawRect(200, 200, 200+ (float) _image.getWidth(), 200 + (float) _image.getHeight(), mShadow);

canvas.save(); 
canvas.rotate((int)degrees,  100,  100);
canvas.drawBitmap(_image,200,200, null);
canvas.restore();