不使用setZOrderOnTop使SurfaceView透明（true）

Question

I have a RelativeLayout containing a custom SurfaceView and other elements that must be drawn over the SurfaceView. I also need the SurfaceView to be transparent. I tried this answer: how to make surfaceview transparent . But with the setZOrderOnTop(true) the other elements over the SurfaceView in the RelativeLayout are shown above the Surface (and partially hidden if the surface have something paint).

How can I solve this problem? thanks

Answer 1

将持有者像素格式设置为RGBA_8888，

sv.setZOrderOnTop(true);    //very much necessary

getHolder().setFormat(PixelFormat.RGBA_8888);

Answer 2

I had success with the setZOrderMediaOverlay(true) instead of setZOrderOnTop(true) . It allows for both Views below and above the OpenGL SurfaceView.

Here it is in context:

GLSurfaceView glview = (GLSurfaceView)findViewById(R.id.surface);
glview.setEGLConfigChooser(8, 8, 8, 8, 16, 0);
glview.getHolder().setFormat(PixelFormat.RGBA_8888);
glview.setZOrderMediaOverlay(true);
glview.setEGLContextClientVersion(2);