Dagger 2 Generic Injections

AccountActivity.java

public class AccountActivity extends BaseActivity {
    // ----------------------------------
    // ATTRIBUTES
    // ----------------------------------
    private AccountComponent component;

    // ----------------------------------
    // LIFE CYCLE
    // ----------------------------------
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        initializeComponent();
        setContentView(R.layout.activity_account);
    }

    @Override
    public void onDestroy() {
        component = null;
        super.onDestroy();
    }


    @Override
    public void inject(Object toInject) {
        if (!(toInject instanceof AccountFragment)) {
            super.inject(toInject);
        }
        component.inject(cast(toInject));
    }

    private void initializeComponent() {
        component = DaggerAccountComponent.builder()
                .applicationComponent(applicationComponent())
                .activityModule(activityModule())
                .build();
    }
}

AccountFragment

public class AccountFragment extends BaseFragment {
    // ----------------------------------
    // LIFE CYCLE
    // ----------------------------------
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        inject(this);
    }
}

BaseActivity.java

public class BaseActivity extends ActionBarActivity implements Injector {
    // ----------------------------------
    // INTERFACES IMPL
    // ----------------------------------
    @Override
    public void inject(Object toInject) {
        Log.i(
                Injector.TAG,
                String.format("%s can't handle %s injection", simpleClassName(this), simpleClassName(toInject))
        );
    }

    // ----------------------------------
    // PRIVATE API
    // ----------------------------------
    protected ApplicationComponent applicationComponent() {
        return ((MyApplication) getApplication()).component();
    }

    protected ActivityModule activityModule() {
        return new ActivityModule(this);
    }

    @SuppressWarnings("unchecked")
    protected <T> T cast(Object toCast) {
        return (T) toCast;
    }

    private String simpleClassName(Object object) {
        if (object == null) {
            return "null";
        }
        return object.getClass().getSimpleName();
    }
}

BaseFragment.java

public class BaseFragment extends Fragment implements Injector {
    // ----------------------------------
    // PRIVATE API
    // ----------------------------------
    @Override
    public void inject(Object toInject) {
        ((Injector)getActivity()).inject(this);
    }
}

Injector.java

/**
 * @author Fernando Franco Giráldez
 */
public interface Injector {
    String TAG = Injector.class.getSimpleName();

    void inject(Object toInject);
}