android - OnCreate not called on Activity

Question

I've created AbstractActivity and an AbstractFormActivity to rid of some boilerplate code, their content may be irrelevant to the question, but I will post it anyway, maybe I misunterstood something so, there they are:

public abstract class AbstractActivity extends ActionBarActivity {

    protected ObjectGraph graph;

    @Inject
    public Bus bus;

    @Inject
    public App app;

    @Override
    public void onCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
        super.onCreate(savedInstanceState, persistentState);
        setContentView(getLayout());
        setupInjection();
    }

    public void setupInjection() {
        graph = ((App) getApplication()).createScopedGraph(getModule());
        graph.inject(this);
        bus.register(this);
        ButterKnife.inject(this);
    }

    protected abstract Object getModule();
    protected abstract int getLayout();
}

and

public abstract class AbstractFormActivity<T extends EntidadeBase> extends AbstractActivity implements Form<T> {

    protected T entity;
    protected Map<View, Boolean> formValidations;
    protected AbstractFormActivity() {
       formValidations = new HashMap<View, Boolean>();
    }

    @Override
    public void onCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
        super.onCreate(savedInstanceState, persistentState);
    }

    protected boolean passedValidations() {
        for (View key : formValidations.keySet()) {
            if (!formValidations.get(key)) {
                return false;
            }
        }
        return true;
    }

    protected void validateAndSolidify() {
        if (passedValidations()) {
            solidify();
        }
        entity = null;
    }

    @Override
    public void validateMoreComplexFields() {
    }
}

finally I've created an Implementation of those mother Activities:

public class MercadoriaFormActivity extends AbstractFormActivity<Mercadoria> {

...

   @Override
   public void onCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
        super.onCreate(savedInstanceState, persistentState);
    }

...

}

My problem is that the onCreate method is not called.

Any help is highly appreciated.

Answer 1

onCreate() version you are currently using is added in Android 21. You should use version below instead:

protected void onCreate (Bundle savedInstanceState)