如何用另一个可绘制区域填充imageView中的可绘制区域？

Question

so I'm trying to find the region of the current image in the ImageView and fill that region with a different image. Here is the original image Empty Circle inside an imageView . The imageView has a drawable of a circle inside. Then I'm trying to make it into something like this Circle filled with image inside an ImageView when a user chooses an image. I don't want to manually Photoshop a circle image. I am just hoping to fill the region with another image. I have tried SRC_IN method from AlphaComposite , but for android, I can't convert from BitMap to graphics2D . If anyone knows how to solve this using the BitmapFactory in android, I would really appreciate your help. Thank you.

Answer 1

The other solution besides Bitmaps, may be too simple for whatever you are trying to achieve otherwise I think it would have occurred to you. I'm just pointing it out in case you have "code blindness" and are trying to over-engineer the solution because you've worked on it for too long (we've all done it)

It is to have that circle/shape image saved as a png with the area you want filled being transparent then set it as the drawable for an ImageView (etc.) then in a RelativeLayout lay this view over the image you want to fill the area and apply a transparent background to the shape view OR simply set the fill image as the background for the shape view.