android BottomNavigationView就相当于groupview groupbutton

<android.support.design.widget.BottomNavigationView
    android:id="@+id/bviv_bar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:itemIconTint="@color/selector_bottom_item_color"
    app:itemTextColor="@color/selector_bottom_item_color"

app:menu="@menu/bottom_navigation_menu"/>

底部导航BottomNavigationView,底部切换button

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/menu_item_home"
        android:icon="@drawable/ic_vector_bottom_home"
        android:title="主页" />

    <item
        android:id="@+id/menu_item_gank_io"
        android:icon="@drawable/ic_vector_bottom_gankio"
        android:title="干货" />

    <item
        android:id="@+id/menu_item_movie"
        android:icon="@drawable/ic_vector_bottom_movie"
        android:title="影视" />

    <item
        android:id="@+id/menu_item_book"
        android:icon="@drawable/ic_vector_bottom_book"
        android:title="书籍" />

    <item
        android:id="@+id/menu_item_personal"
        android:icon="@drawable/ic_vector_bottom_personal"
        android:title="个人" />
</menu>