這些是代碼，如何將菜單對象從一類傳遞到另一類？我的代碼有什么問題？這是我的MainActivity類。public class MainActivity extends AppCompatActivity { @Overrideprotected void onCreate(Bundle savedInstanceState) {@Overridepublic boolean onCreateOptionsMenu(Menu menu) {    getMenuInflater().inflate(R.menu.main_menu, menu);    return super.onCreateOptionsMenu(menu);}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {    String msg = " ";    switch (item.getItemId()){        case R.id.action_settings:            msg = "Settings";            break;        case R.id.action_report:            msg= "Report";            break;    }    Toast.makeText(this, msg + "Checked", Toast.LENGTH_LONG).show();    return super.onOptionsItemSelected(item);}這是我的SecondActivity課程public class Income extends AppCompatActivity{View_Expenses v = new View_Expenses();@Overrideprotected void onCreate(Bundle savedInstanceState) {            v.onCreateOptionsMenu(R.menu.main_menu); //Here have problem}