Unity Android FullScreen

Android側のソースを修正：

	public void onWindowFocusChanged(boolean hasFocus) {
		super.onWindowFocusChanged(hasFocus);
		............
		if (hasFocus)
			hide();
	}

	private void hide() {
		if (Build.VERSION.SDK_INT >= 19)
			getWindow().getDecorView()
					.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
							| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION 
                                                        |View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
							| View.SYSTEM_UI_FLAG_LOW_PROFILE
                                                        | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION // hide nav bar
							| View.SYSTEM_UI_FLAG_FULLSCREEN // hide status bar
							| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
	}