RoundImageView.java 文件源码

@Override
public void buildBoundPath(Path boundPath){
    boundPath.reset();

    final int width = getWidth();
    final int height = getHeight();
    radius = Math.min(radius, Math.min(width, height) * 0.5f);

    RectF rect = new RectF(0, 0, width, height);
    boundPath.addRoundRect(rect , radius, radius, Direction.CW);
}