layout - Android: How to display back arrow in action bar in Activity extended from ListActivity? -


in activity extended actionbaractivity displaying arrow in left corner of action bar using following statement in androidmanifest.xml

 <!-- settings activity -->          <activity android:name="com.kwe.smartt.settingsactivity"                   android:configchanges="orientation"                   android:screenorientation="portrait"                   android:label="settings">                 <!-- displays icon in action bar -->                  <meta-data                   android:name="android.support.parent_activity"                   android:value="com.kwe.smartt.mainactivity" />         </activity>

but found, in activity extended listactivity not working.

question is:

how can simple add arrow in activity extened listactivity ?

thanks advice.

assuming talking android.support.v7.app.actionbaractivity, 1 way following: 

getsupportactionbar().setdisplayhomeasupenabled(true);

providing click functionality in:

@override public boolean onoptionsitemselected(menuitem item) {     if (android.r.id.home == item.getitemid()) {         //     }      return super.onoptionsitemselected(item); }

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