Android: getSupportActionBar() always returns null in ActionBarSherlock library
You should add the Sherlock theme to your application
<application android:icon="@drawable/icon" android:label="@string/app_name"
android:debuggable="false" android:theme="@style/Theme.Sherlock">
GetSupportActionBar return null
I havent played around with SherlockListActivity too much...but here's a shot in the dark....try moving
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
into your onStart method override instead of the onCreate
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