public?class?MainActivity?extends?Activity?{
????@Override
????protected?void?onCreate(Bundle?savedInstanceState)?{
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.activity_main);
????}
????@Override
????public?boolean?onCreateOptionsMenu(Menu?menu)?{
????????getMenuInflater().inflate(R.menu.menu_main?,?menu);
????????return?true;
????}
????@Override
????public?boolean?onOptionsItemSelected(MenuItem?item)?{
????????int?id?=?item.getItemId();
????????if(id?==?R.id.action_settings)
????????{
????????????return?true;
????????}
????????return?super.onOptionsItemSelected(item);
????}
}
2018-07-22
創建module的時候老師選的Activity就是右上角有一個可點擊彈出的菜單欄的那種，選這種Activity就會自動生成一個menu_main.xml（據我的理解…好像是這樣）
2017-10-12
再次路過看一下
2017-10-12
路過看一下