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I'm just starting to do Android development, more-or-less following the http://developer.android.com/training/basics/firstapp/starting-activity.html tutorial, and one thing keeps bugging me: I have two classes, both created using the "Android Activity" creation wizard: public class PlacesActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_places); // I manually commented out the following line to get it to compile. // getActionBar().setDisplayHomeAsUpEnabled(true); } // ... other methods } and public class ShowOnePlace extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_show_one_place); getActionBar().setDisplayHomeAsUpEnabled(true); } // ... other methods } Eclipse kept giving me the following errors: Call requires API level 11 (current min is 8): android.app.Activity#getActionBar Call requires API level 11 (current min is 8): android.app.ActionBar#setDisplayHomeAsUpEnabled until I commented out one of the lines (as shown above). Now the application seems to compile and run on my Android device without errors. (Well, at least without that error). So: Why is getActionBar().setDisplayHomeAsUpEnabled(true); give that error in one class, but that exact same line is not an error -- not even a warning -- in the other class? Is there a bug in the "Android Activity" creation wizard, and somehow that getActionBar().setDisplayHomeAsUpEnabled(true); statement is wrong in o

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