Android: GLES20:称为未实现的OpenGL ES API。

I am getting a "Called unimplemented OpenGL ES API" error, when trying the GLES20 Sample, provided by developer.android.com. I modified the sample, though. The reason was because I got an IllegalArgumentException in GLSurfaceView.BaseConfigChooser.chooseconfig, so i replaced I am getting a "Called unimplemented OpenGL ES