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No shadow by default on Toolbar?

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How to show shadow in Toolbar in android?

In this example, I have created a custom background XML(drop shadow) and applied it inside the FrameLayout. And this will give a drop shadow effect on the toolbar. Note: Don't forget to hide your view if the device you are running is >= to Lollipop. if not you'll end up with two shadows.

How do I get rid of the shadow bar on my Android?

By default, android provides shadow for action bar. This example demonstrates How to remove shadow below the action bar. Step 1 - Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 - Add the following code to res/layout/activity_main.

What is Toolbar Android?

In Android applications, Toolbar is a kind of ViewGroup that can be placed in the XML layouts of an activity. It was introduced by the Google Android team during the release of Android Lollipop(API 21). The Toolbar is basically the advanced successor of the ActionBar.

What is AppBarLayout?

AppBarLayout is a vertical LinearLayout which implements many of the features of material designs app bar concept, namely scrolling gestures. Children should provide their desired scrolling behavior through AppBarLayout.


I ended up setting my own drop shadow for the toolbar, thought it might helpful for anyone looking for it:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:app="http://schemas.android.com/apk/res-auto"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:layout_gravity="top"
              android:orientation="vertical">

    <android.support.v7.widget.Toolbar android:id="@+id/toolbar"
                                       android:layout_width="match_parent"
                                       android:layout_height="wrap_content"
                                       android:background="@color/color_alizarin"
                                       android:titleTextAppearance="@color/White"
                                       app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>

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

        <!-- **** Place Your Content Here **** -->

        <View android:layout_width="match_parent"
              android:layout_height="5dp"
              android:background="@drawable/toolbar_dropshadow"/>

    </FrameLayout>

</LinearLayout>

@drawable/toolbar_dropshadow:

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

    <gradient android:startColor="@android:color/transparent"
              android:endColor="#88333333"
              android:angle="90"/>

</shape>

@color/color_alizarin

<color name="color_alizarin">#e74c3c</color>

enter image description here


Google released the Design Support library a few weeks ago and there is a nifty solution for this problem in this library.

Add the Design Support library as a dependency in build.gradle :

compile 'com.android.support:design:22.2.0'

Add AppBarLayout supplied by the library as a wrapper around your Toolbar layout to generate a drop shadow.

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
       <android.support.v7.widget.Toolbar
           .../>
    </android.support.design.widget.AppBarLayout>

Here is the result :

enter image description here

There are lots of other tricks with the design support library.

  1. http://inthecheesefactory.com/blog/android-design-support-library-codelab/en
  2. http://android-developers.blogspot.in/2015/05/android-design-support-library.html

AndroidX

As above but with dependency:

implementation 'com.google.android.material:material:1.0.0'

and com.google.android.material.appbar.AppBarLayout


You can't use the elevation attribute before API 21 (Android Lollipop). You can however add the shadow programmatically, for example using a custom view placed below the Toolbar.

@layout/toolbar

<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/blue"
    android:minHeight="?attr/actionBarSize"
    app:theme="@style/ThemeOverlay.AppCompat.ActionBar" />

<View
    android:id="@+id/toolbar_shadow"
    android:layout_width="match_parent"
    android:layout_height="3dp"
    android:background="@drawable/toolbar_dropshadow" />

@drawable/toolbar_dropshadow

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <gradient
        android:startColor="@android:color/transparent"
        android:endColor="#88333333"
        android:angle="90"/> </shape>

in your activity layout <include layout="@layout/toolbar" />

enter image description here


Use /values folders to apply the correct shadow style based on OS version.

For under 5.0 devices, use /values/styles.xml to add windowContentOverlay to the body of your activity:

<style name="MyViewArea">
    <item name="android:foreground">?android:windowContentOverlay</item>
</style>

<style name="MyToolbar">
    <item name="android:background">?attr/colorPrimary</item>
</style>

Then add your own custom shadow by changing your Theme to include:

<item name="android:windowContentOverlay">@drawable/bottom_shadow</item>

You can grab Google's IO app shadow resource here: https://github.com/google/iosched/blob/master/android/src/main/res/drawable-xxhdpi/bottom_shadow.9.png

For 5.0 devices & later, use /values-v21/styles.xml to add elevation to your toolbar using a custom header style:

<style name="MyViewArea">
</style>

<style name="MyToolbar">
    <item name="android:background">?attr/colorPrimary</item>
    <item name="android:elevation">4dp</item>
</style>

Note that in the second case, I had to create an empty MyViewArea style so the windowContentOverlay wouldn't show up too.

[Update: changed resource names and added Google shadow.]


This worked for me very well:

<android.support.v7.widget.CardView
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/primary"
    card_view:cardElevation="4dp"
    card_view:cardCornerRadius="0dp">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/primary"
        android:minHeight="?attr/actionBarSize" />

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

If you are seting the ToolBar as ActionBar then just call:

getSupportActionBar().setElevation(YOUR_ELEVATION);

Note: This must be called after setSupportActionBar(toolbar);


i added

<android.support.v7.widget.Toolbar
...
android:translationZ="5dp"/>

in toolbar description and it works for me. Using 5.0+