隐藏标题栏

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(R.layout.first_layout);}

其中requestWindowFeature(Window.FEATURE_NO_TITLE)的意思就是不在活动中显示标题栏，注意这句代码一定要在setContentView()之前执行，不然会报错