<menuxmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"><itemandroid:id="@+id/action_menu"android:title="选项卡"android:icon="@android:drawable/ic_input_add"app:showAsAction="ifRoom"><menu><itemandroid:id="@+id/action_1"android:icon="@android:drawable/ic_menu_mapmode"android:title="模式1"app:showAsAction="ifRoom"/><itemandroid:id="@+id/action_2"android:icon="@android:drawable/btn_star_big_off"android:title="模式2"app:showAsAction="ifRoom"/><itemandroid:id="@+id/action_3"android:icon="@android:drawable/btn_star_big_off"android:title="模式3"app:showAsAction="ifRoom"/><itemandroid:id="@+id/action_4"android:icon="@android:drawable/btn_star_big_off"android:title="模式4"app:showAsAction="ifRoom"/><itemandroid:id="@+id/action_5"android:icon="@android:drawable/btn_star_big_off"android:title="模式5"app:showAsAction="ifRoom"/><itemandroid:id="@+id/action_6"android:icon="@android:drawable/ic_dialog_map"android:title="交通线"app:showAsAction="ifRoom"/></menu></item>
</menu>

public class MainActivity extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);
    }@Overridepublic boolean onOptionsItemSelected(MenuItem item) {switch (item.getItemId()) {case R.id.action_1:break;case R.id.action_2:break;case R.id.action_3:break;case R.id.action_4:break;case R.id.action_5:break;case R.id.action_6:break;}return super.onOptionsItemSelected(item);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.menu, menu);return super.onCreateOptionsMenu(menu);}
}