Question

我想在我的底部导航视图中添加子菜单以及如何添加到底部导航视图？我尝试直接添加到菜单项，它无法运行

bottom_navigation_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
    android:id="@+id/menu"
    android:icon="@drawable/ic_menu"
    android:title="@string/menu"
    app:showAsAction="ifRoom"
    android:enabled="true"/>
<item
    android:id="@+id/promotion"
    android:icon="@drawable/ic_promotion"
    android:title="@string/promotion"
    app:showAsAction="ifRoom"
    android:enabled="true"/>
<item
    android:id="@+id/order"
    android:icon="@drawable/ic_order"
    android:title="@string/order"
    app:showAsAction="ifRoom"
    android:enabled="true"/>
<item
    android:id="@+id/location"
    android:icon="@drawable/ic_location"
    android:title="@string/location"
    app:showAsAction="ifRoom"
    android:enabled="true"/>
<item
    android:id="@+id/more"
    android:icon="@drawable/ic_more"
    android:title="@string/more"
    app:showAsAction="ifRoom"
    android:enabled="true">
    <menu>
        <item
            android:icon="@drawable/ic_more"
            android:title="Sub item 1" />
        <item
            android:icon="@drawable/ic_more"
            android:title="Sub item 2" />
    </menu>
</item>

</menu>

Answer 1

对于“添加”菜单，您可以使用design:menu="@menu/bottom_navigation_menu"到底部导航视图。

目前，您无法在BottomNavigationView中使用subMenu，并且只能使用最多5个菜单项。

检查BottomNavigationView android开发者文档。

Answer 2

If you want to have submenu for a menu item, your best shot is to have it in Navigation drawer as you cannot create a submenu inside BottomNavigationView.

Also, as per material design guidelines, there should be only 3 to 5 top level destinations(or menu items) in our BottomNavigationView. If you have less than 3 items, it is recommended to use tabs. And if you have more than 5 items, it is recommended to have the rest items inside Navigation drawer. Please refer the link below:

https://material.io/guidelines/components/bottom-navigation.html

如何将子菜单添加到底部导航视图中

2 个答案: