隱藏底部虛擬導航欄

    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
         
        window = getWindow();  
        WindowManager.LayoutParams params = window.getAttributes();  
        params.systemUiVisibility = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;  
        window.setAttributes(params);  
  
        setContentView(R.layout.main);  
    }