带有圆角和内部阴影的ImageView

I need to make a thumbnail view with rounded corners and inner shadow. Usually I'm making ImageView frames with 9patches, which have served me well so far, but this time the effect I need requires drawing the inner shadow on top of the image (and not just around it). This lead me to extend the ImageView class and override the onDraw() method.I need to make a thumbnail view with rounded co