Implementation of a Bottom Navigation View in an Android application.

Now this component is part of Jetpack and this tutorial was updated to AndroidX.

Dependency

Dependency addition (0.48)

~~compile 'com.android.support:design:25.0.0'~~

implementation 'com.google.android.material:material:1.1.0'

Adding the component

Adding the BottomNavigationView (1.08)

<com.google.android.material.bottomnavigation.BottomNavigationView
    android:id="@+id/bottomNavigationView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom"
    app:labelVisibilityMode="labeled"
    app:menu="@menu/menu_navigation" />

Versión del video (deprecated):

<android.support.design.widget.BottomNavigationView  
    android:id="@+id/bottomNavigationView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

Menu

Menu creation (1.38)

menu_navigation.xml

<?xml version="1.0" encoding="utf-8"?>  
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <item
        android:id="@+id/inicioItem"
        android:icon="@drawable/ic_home"
        android:title="@string/inicio" />

    <item
        android:id="@+id/buscarItem"
        android:icon="@drawable/ic_search"
        android:title="@string/buscar" />

    <item
        android:id="@+id/camaraItem"
        android:icon="@drawable/ic_camera_alt"
        android:title="@string/camara" />

    <item
        android:id="@+id/favoritosItem"
        android:icon="@drawable/ic_favorite"
        android:title="@string/favoritos" />

    <item
        android:id="@+id/perfilItem"
        android:icon="@drawable/ic_person"
        android:title="@string/perfil" />

</menu>

The Code

Repository Download

If you find an error, please create an Issue. We will fix it ASAP.
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The updated version is in master branch if you need exactly the video version you can use the video branch.

After you download or clone the project you can import it with the "Import Project" option from Android Studio.

Extra

Badges

Now it's posible to add badges to each section.

Import BadgeDrawable

import com.google.android.material.badge.BadgeDrawable;

Set a value or mark by the id of the menu

BadgeDrawable badge = bottomNavigationView.getOrCreateBadge(R.id.inicioItem);
badge.setNumber(7); // optional if you just want to put a red dot
badge.setVisible(true);

Themes

It's no longer neccesary to place a shadow manually, it's already in the default theme.

Default

style="@style/Widget.MaterialComponents.BottomNavigationView"

If you need a BottomNavigationView with the app primary color background.

style="@style/Widget.MaterialComponents.BottomNavigationView.Colored"

And this is the old style with some animation, but not recommended.

style="@style/Widget.Design.BottomNavigationView"

Remove animation

If you don't want the selection animation you can add the following attribute.

app:labelVisibilityMode="labeled"

If you don't want the zoom animation when the option changes (shift mode) there is no a method that allows it yet, but you can use this:

private void removeShiftMode(BottomNavigationView bottomNavigationView) {~~
    BottomNavigationMenuView menuView = (BottomNavigationMenuView) bottomNavigationView.getChildAt(0);
    try {
        Field shiftingMode = menuView.getClass().getDeclaredField("mShiftingMode");
        shiftingMode.setAccessible(true);
        shiftingMode.setBoolean(menuView, false);
        shiftingMode.setAccessible(false);
        for (int i = 0; i < menuView.getChildCount(); i++) {
            BottomNavigationItemView item = (BottomNavigationItemView) menuView.getChildAt(i);
            //noinspection RestrictedApi
            item.setShiftingMode(false);
            //noinspection RestrictedApi
            item.setChecked(item.getItemData().isChecked());
        }
    } catch (NoSuchFieldException e) {
    } catch (IllegalAccessException e) {
    }
}

You can download the same example with this change.

With Fragments

If you want an example with fragments I leave it here (not updated with AndroidX yet):

Resources