[Bug]: OneSignal.Notifications.addClickListener does't fire on cold start

[wasilni2022]

What happened?

Hello, I'm using one signal 5.0.4
I have tested the notifications on real android device running android 33

OneSignal.Notifications.addClickListener is not working when the app is killed completely.
it's works only if the app is running on foreground or background but not when completely killed.

Steps to reproduce?

1. OneSignal.Notifications.addClickListener not called

What did you expect to happen?

Once the user clicked on the notification on phone appbar, the app should open and fire ClickListener, but the app is opened without firing the listener.

OneSignal Flutter SDK version

5.0.4

Which platform(s) are affected?

• iOS
• Android

Relevant log output

No error or warning log from the package.

Code of Conduct

• I agree to follow this project's Code of Conduct

[nan-li]

Hi @wasilni2022,
You are seeing this behavior on both iOS and Android?

Can you share your OneSignal initialization code, and where you call OneSignal.Notifications.addClickListener(listener)?

[wasilni2022]

Hi @wasilni2022, You are seeing this behavior on both iOS and Android?

Can you share your OneSignal initialization code, and where you call OneSignal.Notifications.addClickListener(listener)?

Hello nan,
I tested it on Android only.
Here is the code:

static String? _initializedAppId;

static void initialize({
    required final String appId,
    final VoidCallback? onSuccess,
    final VoidCallback? onError,
  }) {
    try {
      if (_initializedAppId != appId) {
        OneSignal.initialize(appId);
        _initializedAppId = appId;
      }
      onSuccess?.call();
    } catch (_) {
      onError?.call();
    }
  }

This initialization code is called once when the app is launched.

Here is the code for adding the listeners:

Future<void> _initOneSignal() async {
    await _checkAppNotificationsAcceptance();
    OneSignal.Notifications.addForegroundWillDisplayListener(_onForegroundNotification);
    OneSignal.Notifications.addClickListener(_onBackgroundOpenedNotification);
  }

This code is called when the app is launched and the user is signed in.

Once the user is signed out, I invoke these methods:

OneSignal.Notifications.removeForegroundWillDisplayListener(_onForegroundNotification);
OneSignal.Notifications.removeClickListener(_onBackgroundOpenedNotification);

[romanfurman6]

@wasilni2022 Hey, any updates on this? Did you have a chance to fix it?

[wasilni2022]

@wasilni2022 Hey, any updates on this? Did you have a chance to fix it?

Seems like it is working perfectly on release mode.

Thanks

[nan-li]

Hi @wasilni2022 thanks for following up, it was a difference in behavior on debug vs release mode?

@romanfurman6 You are also seeing this same issue?

[wasilni2022]

Hi @wasilni2022 thanks for following up, it was a difference in behavior on debug vs release mode?

@romanfurman6 You are also seeing this same issue?

Unfortunately, the issue still exists on iOS and Android even with release mode (but without publishing to stores), however, it is only working when the app is published to stores (tested on Android only).

[wasilni2022]

@wasilni2022 Hey, any updates on this? Did you have a chance to fix it?

It is only working when the app is published to stores (tested on Android only).

[albertpak]

issue still existing on iOS, and we are using OneSignal v5.1.0

[wasilni2022]

issue still existing on iOS, and we are using OneSignal v5.1.0

Unfortunately, yes, it still exists.

Sometimes it is work as expected, most times not work.

[albertpak]

are there any plans on fixing the issue?

issue still existing on iOS, and we are using OneSignal v5.1.0

Unfortunately, yes, it still exists.

Sometimes it is work as expected, most times not work.

[nan-li]

Hi @wasilni2022 and @albertpak, thanks for following up. It is odd there is a difference in debug vs release vs published versions of the apps, but I have seen some issues before with running Flutter apps in debug vs release.

I am not able to reproduce based on my testing scenario. I add the click listener after initialization at app startup:

OneSignal.initialize("app_id")
OneSignal.Notifications.addClickListener(listener)

---

@wasilni2022 I notice you mention adding the listener after logging in a user and removing the listener after logging out. The listener should be added early in the app startup process in order to capture the click event. Just to test, can you try adding the listener at app startup?

To clarify, Android is working in store published mode?
And iOS is sometimes working in store published mode?

My hunch that the sometimes working or not working is the flaky time gap between the app cold starting and the click listener being added to capture the event.

---

@albertpak Can you tell me about when you are adding the click listener, and Android is working as expected?

[albertpak]

will let you know...but again...our issue is with OneSignal's iOS package, and I'm attaching a dummy app that we made that replicates the problem.

TestOneSignal.zip

---

Hi @wasilni2022 and @albertpak, thanks for following up. It is odd there is a difference in debug vs release vs published versions of the apps, but I have seen some issues before with running Flutter apps in debug vs release.

I am not able to reproduce based on my testing scenario. I add the click listener after initialization at app startup:

OneSignal.initialize("app_id")
OneSignal.Notifications.addClickListener(listener)

@wasilni2022 I notice you mention adding the listener after logging in a user and removing the listener after logging out. The listener should be added early in the app startup process in order to capture the click event. Just to test, can you try adding the listener at app startup?

To clarify, Android is working in store published mode? And iOS is sometimes working in store published mode?

My hunch that the sometimes working or not working is the flaky time gap between the app cold starting and the click listener being added to capture the event.

@albertpak Can you tell me about when you are adding the click listener, and Android is working as expected?

[SVyatoslavG]

I am experiencing the same issue on iOS (I did not test it on Android). I can confirm having the same problem:
Sometimes it works as expected, but most times it does not work.