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ActionBar is also known as app bar, now it is also called toolbar. ActionBar is one of the most important UI elements in android application. We can add many things in android action bar like tabs, overflow/dropdown menu, app icon, navigation drawer, menu items icon, search box, spinner etc. In this tutorial, you will learn to implement spinner/dropdown menu to android actionbar. Adding spinner to app bar/ toolbar is very simple, you just need to create a XML file in res/menu/ folder and add a item like your over flow menu and spinner widget as item actionViewClass, rest in your java code.

Spinner can be added to android actionbar/toolbar with many ways. Here, I am going to show with one of the best and easiest ways.

Related:
Android Material Design Spinner DropDown Example
Android Custom Vertical Dropdown Icons Menu
Android Toolbar Example: How to Use Toolbar as ActionBar

Android Example: How to Implement Spinner in ActionBar/Toolbar


First, you have to create an xml file in res/menu/ folder and add a menu item with id, name, actionViewClass. Menu item file will look like below.

res/menu/android_action_bar_spinner_menu.xml

Java Activity File

Open you java activity file, go to onCreateOptionMenu method if already have and if not then override new method called onCreateOptionMenu and link it to your spinner menu item file using getMenuInflater. And set adapter to the spinner menu item class. Java activity file will looks like below.

src/SpinnerAndroidActionBarToolBar.java

Styles.xml File

You can change spinner background color, text color from styles.xml file. Styles.xml file will look like this.

res/values/styles.xml

XML Layout File

Following is the default content of XML layout file.

res/layout/android_actionbar_toolbar_spinner_example_layout.xml

Android Example: How to Implement Spinner in ActionBar/Toolbar

Now, run your Adding Spinner (Dropdown List) to Android ActionBar/Toolbar application and click on the dropdown arrow from actionbar, you will see spinner with list items.

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