Android 《设置全屏隐藏状态栏》

   @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //全屏去状态栏(在setContentView之前)
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        //全屏去状态栏(在setContentView之前)
        setContentView(R.layout.activity_launch_improve);
    }

效果