public static void TryHideActionbar(this Activity that, View view) { try { //Log.wtf("AndroidGLSpiralActivity", "TryHideActionbar"); var h = new HideLater { that = that, view = view }; view.setOnSystemUiVisibilityChangeListener( h ); h.onSystemUiVisibilityChange(0); //Log.wtf("AndroidGLSpiralActivity", "TryHideActionbar done"); } catch { Log.wtf("AndroidGLSpiralActivity", "TryHideActionbar error"); //throw; } }