android app全屏显示

	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		
		int newVis = View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
		newVis |= View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
		this.getWindow().getDecorView().setSystemUiVisibility(newVis);
		
		
		setContentView(R.layout.activity_main);
	}