activity_main

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/background_light">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="@color/colorPrimary"
            app:layout_scrollFlags="scroll|enterAlways|snap"
            app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

            <com.miguelcatalan.materialsearchview.MaterialSearchView
                android:id="@+id/search_view"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:foregroundGravity="center_vertical"
                android:textColor="@color/colorAccent"
                android:textColorHint="@color/colorAccent"
                android:visibility="gone"
                app:searchBackIcon="@drawable/ic_action_navigation_arrow_back_inverted"
                app:searchBackground="@color/colorPrimary"
                app:searchCloseIcon="@drawable/ic_action_navigation_close_inverted" />

        </android.support.v7.widget.Toolbar>

    </android.support.design.widget.AppBarLayout>

    <LinearLayout
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:paddingBottom="50dp" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_gravity="bottom">

        <android.support.design.widget.CoordinatorLayout
            android:id="@+id/snackbar_container"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1">

            <View
                android:id="@+id/elevation_for_bottom_navigation"
                android:layout_width="match_parent"
                android:layout_height="4dp"
                android:background="@drawable/elevation"/>

        </android.support.design.widget.CoordinatorLayout>

        <com.ittianyu.bottomnavigationviewex.BottomNavigationViewEx
            android:id="@+id/navigation"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_gravity="bottom"
            android:background="@color/colorAccent"
            app:itemBackground="@color/colorAccent"
            app:itemIconTint="@drawable/nav_item_state"
            app:menu="@menu/navigation" />

    </LinearLayout>

</android.support.design.widget.CoordinatorLayout>