AbsRoundImageView#drawImage()中应该是这样 `Canvas drawCanvas = new Canvas(bitmap);` `drawable.setBounds(0, 0, getWidth(), getHeight());` `drawable.draw(drawCanvas);` drawCanvas.getWidth()改为getWidth(), drawCanvas.getHeight()改为getHeight() 使用Xfermode时,尽量禁用硬件加速和使用离屏绘制