Question

Is it possible to:

1. render arbitrary OpenGL code on an application’s widget view in Android, and
2. drive an Android widget with native C++ code (instead of Java)?

_{Motivation: I have access to an Android native OpenGL application that I’d like to modify to work as a widget. Before I undertake this endeavor, I hoped to hear directly if it was absolutely possible (maybe even with a pointer to a code sample), or absolutely impossible.}

Answer 1

No. See here:

App Widget layouts are based on RemoteViews, which do not support every kind of layout or view widget.

For OpenGL you need TextureView or SurfaceView and neither are supported by RemoteViews.