GoodOrEvil pattern

ActivityNotLeakerISwear.java

@Singleton
public class ActivityNotLeakerISwear implements Application.ActivityLifecycleCallbacks {
    private static final Logger LOGGER = LoggerFactory.getLogger(URLHandler.class);
    @Nullable
    private Activity currentActivity;

    @Inject
    public ActivityNotLeakerISwear() {
      
    }

    public void startActivity(Intent intent) {
        if (currentActivity != null) {
            currentActivity.startActivity(intent);
        }
    }

    @Override
    public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
        //onActivityCreated
    }

    @Override
    public void onActivityStarted(Activity activity) {
        //onActivityStarted
    }

    @Override
    public void onActivityResumed(Activity activity) {
        if (currentActivity == null || activity instanceof MainActivity ||
                currentActivity instanceof IntentFilterActivity) {
            currentActivity = activity;
        }
    }

    @Override
    public void onActivityPaused(Activity activity) {
        //onActivityPaused
    }

    @Override
    public void onActivityStopped(Activity activity) {
        //onActivityPaused
    }

    @Override
    public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
        //onActivitySaveInstanceState
    }

    @Override
    @SuppressWarnings("PMD.CompareObjectsWithEquals")
    public void onActivityDestroyed(Activity activity) {
        //please don't change the == to equals in here
        if (currentActivity == activity) {
            currentActivity = null;
        }
    }
    }