Question

我在ActionBar中有选项菜单A的FragmentActivity，在此Activity中，我将一个Fragment和ActionBar更改添加到新选项菜单B.但添加此片段后，菜单A和B都显示在ActionBar中。如何在片段可见时删除菜单A？

Answer 1

我现在有了答案。在FragmentActivity中我有

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.main_page_menu, menu);
    menu.setGroupVisible(R.id.menu_group_main, true); // this line to show menu of Activity

    return super.onCreateOptionsMenu(menu);
}

用

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

<group android:id="@+id/menu_group_main" >
    <item
        android:id="@+id/item_grid"
        android:icon="@drawable/icon_grid"
        android:showAsAction="always"
        android:title="@string/action_grid"/>

</group>

片段我将设置

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.menu_grid_thumb, menu);

    menu.setGroupVisible(R.id.menu_grid_thumb, true);//this line to show menu of Fragment
    menu.setGroupVisible(R.id.menu_group_main, false);// this line to hide menu of Activity
    super.onCreateOptionsMenu(menu, inflater);
}

用

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

<group android:id="@+id/menu_grid_thumb" >
    <item
        android:id="@+id/item_frag_grid"
        android:icon="@drawable/icon_grid"
        android:showAsAction="always"
        android:title="@string/action_grid"/>

</group>

运行良好

使用新菜单添加片段时删除FragmentActivity中的菜单

1 个答案: