<uses-sdk android:minSdkVersion     ="7"/>
<uses-sdk android:targetSdkVersion  ="17"/>
...
..
<activity
     android:name    =".MyApp"
     android:label   ="@string/AppName">
     <intent-filter>
          <action     android:name    ="android.intent.action.MAIN"/>
          <category   android:name    ="android.intent.category.LAUNCHER"/>
     </intent-filter>
</activity>

...
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
...
public class Sozler extends ActionBarActivity{
...

ActionBar actionBar = getSupportActionBar();
          actionBar.setDisplayHomeAsUpEnabled(true);
          actionBar.setHomeButtonEnabled(true);

java.lang.ExceptionInInitializerError
            at android.support.v7.app.ActionBarActivityDelegate.createDelegate(ActionBarActivityDelegate.java:54)
            at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:96)
            at com.kibar.App.MyApp.onCreate(MyApp.java:16)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
            at android.app.ActivityThread.access$1500(ActivityThread.java:117)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)