[Bug]: background notification badge count not increasing

[bbjay]

What happened?

When sending an iOS background notification with "ios_badgeType": "Increase", it behaves the same as "ios_badgeType": "SetTo"

I use the following API call:

curl --request POST \
     --url https://onesignal.com/api/v1/notifications \
     --header 'Authorization: Basic YOUR_REST_API_KEY' \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "app_id": "app id",
  "include_player_ids": [
    "Subscribed device id"
  ],
  "content_available": true,
  "ios_badgeType": "Increase",
  "ios_badgeCount": 5
}
'

When sending a normal foreground notification (with content), "ios_badgeType": "Increase" is behaving as expected.

Steps to reproduce?

1. Send a background notification with the above API call and "ios_badgeCount": 5
2. Notice badge count on app icon to show "5"
3. Send background notification again, but with "ios_badgeCount": 1
4. Notice badge count on app icon to show "1"

What did you expect to happen?

Badge count on app icon should show "6"

OneSignal iOS SDK version

3.12.10, 5.2.8

iOS version

17

Specific iOS version

17.4

Relevant log output

No response

Code of Conduct

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

edit: updated affected SDK versions

[filecc]

Same here, nothing seems to work.

{
  "app_id": "APP-ID",
  "target_channel": "push",
  "headings": {"en": "English Title"},
  "contents": {"en": "English Message"},
  "include_aliases": {
    "external_id": [
      "ID"
    ]
  },
   "ios_badgeType": "SetTo",
   "ios_badgeCount": "5"

}

[bbjay]

@filecc your issue seems to be with foreground notifications (as you include a "contents" key in your request). This issue is specifically about background notifications.
I can recommend you to re-check your setup for Notification Service Extension, and App Groups,
and open a new/separate issue if you cannot get it to work.

[bbjay]

I did some further digging and found that the latest SDK v5.2.8 has this issue too. When testing with the new SDK, I also used the new API:

curl --request POST \
     --url 'https://api.onesignal.com/notifications' \
     --header 'Authorization: Basic YOUR_REST_API_KEY' \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "app_id": "YOUR_APP_ID",
  "target_channel": "push",
  "include_subscription_ids": [
    "SUBSCRIPTION_ID_1",
  ],
  "content_available": true,
  "ios_badgeType": "Increase",
  "ios_badgeCount": 1
}
'

wich leads to the same issue.

When checking the contents of the background notification with the OneSignalExample app,

OneSignalExample[6803:2035134] application:didReceiveRemoteNotification:fetchCompletionHandler: {
  aps =     {
      badge = 1;
      "content-available" = 1;
      "mutable-content" = 1;
  };
  custom =     {
      "badge_inc" = 1;
      i = "12494bc4-0916-48a8-ae1d-26881e25183c";
  };
}

i noticed that the aps dict also contains badge: 1, which in my understanding gives iOS the instruction to set the badge count to 1. This may not be the root cause of the issue, but at least it makes it harder to implement an "Increase" functionality in the delegate method on my own, as I have to keep & persist the current badge count too.

I would expect the aps.badge key to be present only when "ios_badgeType": "SetTo" is given.

[nan-li]

Hi @bbjay thanks for reporting. We will take a look into this issue.