onCreate方法中添加以下代码：，，``java，@Override，protected void onCreate(Bundle savedInstanceState) {， super.onCreate(savedInstanceState);， // 隐藏标题栏， requestWindowFeature(Window.FEATURE_NO_TITLE);， // 设置全屏， getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,， WindowManager.LayoutParams.FLAG_FULLSCREEN);， setContentView(R.layout.activity_main);，}，``