Add elevation/shadow on toolbar for pre-lollipop devices

For Android 5.0 and above : AppBarLayout automatically provides/gives shadow in the layout.You can also increase the elevation of the AppBarLayout by app:elevation="4dp".

For Pre-Lollipop : You can use the following link: https://github.com/vipulasri/Toolbar-Elevation-Pre-Lollipop

Note: Toolbar also supports elevation to it, using android:elevation="4dp"

New Update: In Appcompat v24.0.0, you can not set elevation to AppBarLayout using setElevation() and app:elevation as these are deprecated.

You have to use stateListAnimator property to set elevation now.

Note: set duration to 1ms in StateListAnimator in order to avoid delay in Elevation Drawing.

AppBarLayout elevation change is delayed on appCompat v24.0.0

appbar_always_elevated.xml in animator-v21 folder under res directory.

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"><item>    <objectAnimator android:propertyName="elevation"                    android:valueTo="8dp"                     android:valueType="floatType"                    android:duration="1"/></item></selector>

In AppbarLayout :

<android.support.design.widget.AppBarLayout        android:layout_width="match_parent"        android:layout_height="300dp"        android:fitsSystemWindows="true"        android:stateListAnimator="@animator/appbar_always_elevated"        android:theme="@style/AppTheme.AppBarOverlay"></android.support.design.widget.AppBarLayout>

Try using the AppBarLayout inside the activity layout. Try:

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent">    <android.support.design.widget.AppBarLayout        android:layout_width="match_parent"        android:layout_height="wrap_content">        <include            layout="@layout/Toolbar" />    </android.support.design.widget.AppBarLayout>    <fragment        class="OverAllField.XamarinAndroid.Fragments.Planning.PlanningFragment"        android:id="@+id/PlanningFragment"        android:layout_width="match_parent"        android:layout_height="0dp"        android:layout_weight="1" /></LinearLayout>

Toolbar.xml

<?xml version="1.0" encoding="utf-8"?><android.support.v7.widget.Toolbar    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    android:id="@+id/Toolbar"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:minHeight="?attr/actionBarSize"    android:background="?attr/colorPrimary"    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"    app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

use build file:

compile 'com.android.support:cardview-v7:23.1.1'

refer this link

to call in xmladd:

app:cardElevation="8dp"app:cardCornerRadius="8dp"app:contentPadding="5dp"