Actionbar Background Image

How to customize ActionBar background image?

Try this

<LinearLayout 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:orientation="vertical">

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

        <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="?attr/actionBarSize"
            android:background="@drawable/test"
            app:contentInsetEnd="0dp"
            app:contentInsetLeft="0dp"
            app:contentInsetRight="0dp"
            app:contentInsetStart="0dp"
            app:layout_scrollFlags="scroll|enterAlways"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

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

theme

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="windowActionBar">false</item>
    <item name="android:windowNoTitle">true</item>
    <item name="android:textColorSecondary">@android:color/white</item>
    <item name="android:windowActionBar">false</item>
</style>

activity

public class MainActivity extends AppCompatActivity {

    Toolbar toolbar;

    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);             
        getWindow().getDecorView()
                .setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
        getWindow().setStatusBarColor(Color.TRANSPARENT);
        setContentView(R.layout.activity_main);

        toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

    }

}

RESULT

How to set background image in actionbar android

Please read this article: http://cyrilmottier.com/2013/05/24/pushing-the-actionbar-to-the-next-level/

There you will find example and tutorial about your questuion

And also you can set action bar background like this.

private void setActionBar() {
        getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);
        getSupportActionBar().setDisplayShowHomeEnabled(true);
        getSupportActionBar().setCustomView(R.layout.header_actionbar);
        getSupportActionBar().setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.actionbar_blue)));
        TextView tvHeader = (TextView) findViewById(R.id.tv_title_header_actionbar);
        TextView tvSubheader = (TextView) findViewById(R.id.tv_subtitle_header_actionbar);
        tvSubheader.setVisibility(View.GONE);
    }

call setActionBar() in your oncreate().

Add Activity's background image in ActionBar

windowActionBarOverlay should work.

If your using android support library, then you need to do like this

<item name="windowActionBarOverlay">true</item>

Here is an example custom style ...

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="android:actionBarStyle">@style/MyActionBar</item>
    <item name="android:windowActionBarOverlay">true</item>
    <item name="windowActionBarOverlay">true</item>
</style>

<style name="MyActionBar" parent="@android:style/Widget.Holo.Light.ActionBar">
    <item name="android:background">#40000000</item>
</style>

Custom ActionBar with a background image

You can design your own actionBar view, you may even inflate it from any xml, and then just:

    getActionBar().setCustomView(yourView);
    getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);

To adjust the height of your bar, you could do it like this:

<!-- Application theme. -->
<style name="AppTheme" parent="AppBaseTheme">
    <item name="android:actionBarStyle">@style/MyActionBar</item>
</style>

<!-- the theme applied to the application or activity -->
<style name="CustomActionBarTheme" parent="@android:style/Theme.Holo.Light.DarkActionBar">
    <item name="android:actionBarStyle">@style/MyActionBar</item>
</style>

<!-- ActionBar styles -->
<style name="MyActionBar" parent="@android:style/Widget.Holo.Light.ActionBar.Solid.Inverse">

   <!-- the height you desire according to your dimen -->

    <item name="android:height">@dimen/action_bar_height</item>
</style>

Then, apply your theme. It works for me

Common background image for Actionbar (Toolbar) and statusbar

to set image in action make your toolbar like this

<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:background="@color/float_transparent"
    app:popupTheme="@style/AppTheme.PopupOverlay" >

    <ImageView
      android:layout_width="match_parent"
      android:layout_height="?attr/actionBarSize"
      android:scaleType="fitXY"
      android:src="@drawable/home_top_image"
   />
 </android.support.v7.widget.Toolbar>

and in activity theme m change your primary color and primary dark color to transparent color

like this

 <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
  <!-- Customize your theme here. -->
  <item name="colorPrimary">@android:color/transparent</item>
  <item name="colorPrimaryDark">@android:color/transparent</item>
  <item name="colorAccent">@color/colorAccent</item>
  <item name="android:windowTranslucentStatus">true</item>
  <item name="android:windowTranslucentNavigation">true</item>
 </style>

Actionbar items are not shown when the background image is white

The page on Imagery has a section on "Text protection". Quoting from there:

To make typography legible on top of imagery, apply text protection in
the form of scrims. Scrims are lightweight, translucent material
layers.

So if you want to ensure the text is legible you add a scrim to your Toolbar, e.g. (if it's not possible to edit the images) a View with a background made of a shape drawable with a color gradient.

How to customize ActionBar background image?

Try this

<LinearLayout 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:orientation="vertical">

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

        <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="?attr/actionBarSize"
            android:background="@drawable/test"
            app:contentInsetEnd="0dp"
            app:contentInsetLeft="0dp"
            app:contentInsetRight="0dp"
            app:contentInsetStart="0dp"
            app:layout_scrollFlags="scroll|enterAlways"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

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

theme

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="windowActionBar">false</item>
    <item name="android:windowNoTitle">true</item>
    <item name="android:textColorSecondary">@android:color/white</item>
    <item name="android:windowActionBar">false</item>
</style>

activity

public class MainActivity extends AppCompatActivity {

    Toolbar toolbar;

    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);             
        getWindow().getDecorView()
                .setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
        getWindow().setStatusBarColor(Color.TRANSPARENT);
        setContentView(R.layout.activity_main);

        toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

    }

}

RESULT

Android ActionBar Background Image

 final ActionBar actionBar = getActionBar(); 

 BitmapDrawable background = new BitmapDrawable (BitmapFactory.decodeResource(getResources(),   
 R.raw.actionbar_background)); 

 background.setTileModeX(android.graphics.Shader.TileMode.REPEAT); 

 actionBar.setBackgroundDrawable(background);

See this

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