代码设置menu形式：

public class MainActivity extends Activity{    private final int MENU_ID_SETTING = 1;    private final int MENU_ID_EXIT = 2;                         @Override    protected void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);    }                         //重写onCreateOptionsMenu创建菜单    @Override    public boolean onCreateOptionsMenu(Menu menu)    {        menu.add(0,MENU_ID_SETTING,0,"设置");        menu.add(0,MENU_ID_EXIT,0,"退出");        return super.onCreateOptionsMenu(menu);    }                         //重写onOptionsItemSelected设置菜单事件    @Override    public boolean onOptionsItemSelected(MenuItem item)    {        switch (item.getItemId())        {        case MENU_ID_SETTING:            Toast.makeText(this, "设置", Toast.LENGTH_LONG).show();            break;        case MENU_ID_EXIT:            Toast.makeText(this, "退出", Toast.LENGTH_LONG).show();            break;        default:            break;        }        return super.onOptionsItemSelected(item);    }}

清单配置形式：

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)    {        //通过xml配置菜单        MenuInflater inflater = getMenuInflater();        inflater.inflate(R.menu.setmenu, menu);        return super.onCreateOptionsMenu(menu);    }    @Override    public boolean onMenuItemSelected(int featureId, MenuItem item)    {        switch (item.getItemId())        {        case R.id.item1:            Toast.makeText(this, "设置", Toast.LENGTH_LONG);            break;                   default:            break;        }        return super.onMenuItemSelected(featureId, item);    }}