Bottom Navigation with Floating Action Button

Mahesh · February 2021

1.activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActvity">

    <FrameLayout
        android:id="@+id/frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

    <com.google.android.material.bottomappbar.BottomAppBar
        android:id="@+id/bar"
        style="@style/Widget.MaterialComponents.BottomAppBar.Colored"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:fitsSystemWindows="true"
        app:fabAlignmentMode="center"

        app:fabCradleRoundedCornerRadius="20dp">

        <com.google.android.material.bottomnavigation.BottomNavigationView
            android:id="@+id/bottomNavigationView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginEnd="16dp"
            android:background="@android:color/transparent"
            android:padding="0dp"
            app:elevation="0dp"
            app:itemIconTint="@drawable/bottom_navigation_selector"
            app:itemTextColor="@drawable/bottom_navigation_selector"
            app:menu="@menu/bottom_navigation" />
    </com.google.android.material.bottomappbar.BottomAppBar>

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:elevation="8dp"
        android:src="@drawable/ic_plus"
        app:layout_anchor="@id/bar"
        app:rippleColor="@color/colorPrimary" />

</androidx.coordinatorlayout.widget.CoordinatorLayout>

2.bottom_navigation_selector

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="@color/black" android:state_checked="true" />
    <item android:color="@android:color/darker_gray" />
</selector>

3.navigation menu items menu/bottom_navigation.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/home"
        android:icon="@drawable/ic_home"
        android:title="@string/home"
        app:showAsAction="always"
        />

    <item
        android:id="@+id/myPackages"
        android:icon="@drawable/ic_home"
        android:title="@string/my_packages"
        app:showAsAction="always"/>
    <item
        android:id="@+id/place"
        android:title="" />
    <item
        android:id="@+id/myQuotations"
        android:icon="@drawable/ic_home"
        android:title="@string/quotations"
        app:showAsAction="always"/>

    <item
        android:id="@+id/account"
        android:icon="@drawable/ic_home"
        android:title="@string/account"
        app:showAsAction="always"/>


</menu>

4.In Main Actvity in onCreate() Add following code

bottomNavigation.getMenu().getItem(2).setEnabled(false);
bottomNavigation.setOnNavigationItemSelectedListener(this);