Hi,

I just met a issue of  glGenTextures. I wrote the below codes on 
Activity.onCreate() function

        int[] mTextureNames = new int[1];
        GLES20.glGenTextures(1,mTextureNames,0);
        SurfaceTexture mSurfaceTexture = new 
SurfaceTexture(mTextureNames[0]);

but mTextureNames[0] is always 0 and got the log "call to OpenGL ES API 
with no current context (logged once per thread)".  I think i may need to 
do some initialization work before calling the source code. Would someone 
help to tell me what's the steps ? Thanks a lot!

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