iOS double notification while app is in the background

[nikolajev-dev]

Bug report

Current behavior:
While app is in the background and foreground_notification is set to true, receive 2 notifications in status bar instead of one. This is happening only when push notification using APNS token. When push notification with firebase token, with same payload, all works fine.

Receiving 2 notification instead of one while app is in the background

I tested on exaple project, it act the same as on my project

Expected behavior:

Receive one notification while app is running in the background and when receive notification from APNS with foreground_notification key set.
Steps to reproduce:

1. Run app
2. Get tocken usnig method getApnsToken
3. Use apns token to apns push notification

Environment information

• Cordova CLI version
• Cordova platform version
  • cordova platform ls
• Plugins & versions installed in project (including this plugin)
  • cordova plugin ls 6.1.0
• Dev machine OS and version, e.g.
  • OSX 10.14.4

Runtime issue

• OS details
  • iOS 12.1,

iOS build issue:

• Node JS version
  10.15.3
• XCode version
  10.1

Related code:

{
    "aps":{
        "alert":{
            "body":"Test",
            "title":"Test"
        },
        "content-available":1,
        "category":"NEW_MESSAGE_CATEGORY",
        "badge":2,
        "mutable-content":1,
        "sound":"default"
        },  
    "notification_foreground": true
}

[odai-alali]

I am having the same problem, were you able to find a solution/workaround?

[nikolajev-dev]

Not yet. I hope plugin developers will come up with some solutions.

[dpa99c]

This is caused because you have both "notification_foreground": "true" and "content-available":1 in the message payload.

"notification_foreground": "true" causes the willPresentNotification delegate to trigger a notification.
"content-available":1 causes the didReceiveRemoteNotification delegate to trigger a notification.

TL;DR: Don't use "notification_foreground": "true" and "content-available":1 together in the same message payload.
I will update the docs to make this clear.

[dpa99c]

After some investigation, I've been able to handle the case where both both "notification_foreground": "true" and "content-available":1 are specified in the message payload.
The above commit handles this to ensure that only one notification is created per message received.

This means that you can now use "content-available":1 to have iOS wake up the app while it's in the background to receive the message payload without user interaction and still have a notification displayed in the message arrives while the app is in the foreground by using "notification_foreground": "true" .

This functionality will be merged to master and published in the next released version to npm.