@Override public void onAttachedToWindow() { super.onAttachedToWindow(); if (mHardwareView == null || mHardwareView.isReadyToRender()) { mAwContents.onAttachedToWindow(); mAttachedContents = true; } else { mHardwareView.setReadyToRenderCallback( new Runnable() { @Override public void run() { assert !mAttachedContents; mAwContents.onAttachedToWindow(); mAttachedContents = true; } }); } }