How to implement bottom navigation tab as per the google new guideline

You can use the support library v25.

Add in your build.gradle

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

Add the BottomNavigationView in your layout:

<android.support.design.widget.BottomNavigationView
        android:id="@+id/bottom_navigation"
        app:menu="@menu/bottom_navigation_menu"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:itemBackground="@color/colorPrimary"
        app:itemIconTint="@color/mycolor"
        app:itemTextColor="@color/mycolor"/>

Then create a menu file (menu/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/my_action1"
        android:enabled="true"
        android:icon="@drawable/my_drawable"
        android:title="@string/text"
        app:showAsAction="ifRoom" />
    ....
</menu>

Then add the listener:

BottomNavigationView bottomNavigationView = (BottomNavigationView)
                findViewById(R.id.bottom_navigation);

bottomNavigationView.setOnNavigationItemSelectedListener(
        new BottomNavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                switch (item.getItemId()) {
                    case R.id.my_action1:
                        //Do something...
                        break;

                }
                return false;
            }
        });

Repository I have added complete project at this link have a look https://gitlab.com/ashish29agre/android-bottom-navigation-view-support-lib

Hi This might be little late here is the xml

<android.support.design.widget.AppBarLayout
    android:id="@+id/app_bar_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:fitsSystemWindows="true"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">


    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|enterAlways"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.AppBarLayout>


<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">


    <android.support.design.widget.BottomNavigationView
        android:id="@+id/nm_bottom"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:background="@color/colorPrimaryDark"
        app:itemIconTint="@android:color/white"
        app:itemTextColor="@android:color/white"
        app:layout_scrollFlags="scroll|enterAlways"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        app:menu="@menu/nav_menu" />

    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@id/nm_bottom"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

</RelativeLayout>