Add the check box in the Android action bar

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I've a problem when i was adding Check box on Action Bar, it is not showing Check box on Action Bar only showing checkbox title.

`

<item
    android:id="@+id/action_settings"
    android:orderInCategory="100"
    android:showAsAction="never"
    android:title="@string/action_settings"/>
<item
    android:id="@+id/action_delete"
    android:icon="@drawable/ic_action_discard"
    android:showAsAction="always"
    android:title=""/>
<item
    android:id="@+id/check_all"
    android:actionViewClass="android.widget.checkbox"
    android:showAsAction="always"
    android:title="@string/action_check"/>
<item
    android:id="@+id/action_add"
    android:icon="@drawable/ic_action_add"
    android:showAsAction="always"
    android:title="@string/action_add"/>

` this is my menu.XML


You need to change the android:actionViewClass="android.widget.checkbox" to android:actionViewClass="android.widget.CheckBox" so that android can recognize the checkbox actual class name.