Bottom
SESL variant Represents a standard bottom navigation bar for application. It is an implementation of material design bottom navigation.
Bottom navigation bars make it easy for users to explore and switch between top-level views in a single tap. They should be used when an application has three to five top-level destinations.
The bar can disappear on scroll, based on , when it is placed within a CoordinatorLayout and one of the children within the CoordinatorLayout is scrolled. This behavior is only set if the layout_behavior property is set to .
The bar contents can be populated by specifying a menu resource file. Each menu item title, icon and enabled state will be used for displaying bottom navigation bar items. Menu items can also be used for programmatically selecting which destination is currently active. It can be done using MenuItem#setChecked(true)
layout resource file:
<com.google.android.material.bottomnavigation.BottomNavigationView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schema.android.com/apk/res/res-auto"
android:id="@+id/navigation"
android:layout_width="match_parent"
android:layout_height="56dp"
android:layout_gravity="start"
app:menu="@menu/my_navigation_items" />
res/menu/my_navigation_items.xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/action_search"
android:title="@string/menu_search"
android:icon="@drawable/ic_search" />
<item android:id="@+id/action_settings"
android:title="@string/menu_settings"
android:icon="@drawable/ic_add" />
<item android:id="@+id/action_navigation"
android:title="@string/menu_navigation"
android:icon="@drawable/ic_action_navigation_menu" />
</menu>
For more information, see the component developer guidance and design guidelines.