java - 当我在 Android 中触摸菜单项时，有没有办法更改操作栏菜单项的文本？

Question

当我触摸此“编辑”按钮时，我希望它更改为“完成”。有没有办法做到这一点？

我试过这个，但它只在打开右侧的菜单时才有效：

@Override
public boolean onPrepareOptionsMenu(Menu menu) {

    // change the text here.

    return super.onPrepareOptionsMenu(menu);
}

Answer 1

I assume that, at some point, you inflate the menu, yes?

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.some_menu_layout, menu);
    return true;
}

So you can go into your menu (in this case, res/menu/some_menu_layout.xml), and find the android:id of the menu item you want to find. You should then be able to use menu.findItem(theId).setTitle("Done");. (You may have to save your Menu variable as a local member to do this.)