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Xamarin.Forms Application State and Push Notifcation

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Trying to understand what's going on here.

Here's what's going on.

The application starts normally,
1. registers all dependency services
2. register/subscribe push notification events from Plugin.FirebasePushNotification library

Now when I receive a push notification and tap on the notification box. The app re-launches again and repeats the flow above, but now the problem comes in #2 where I subscribed to the "event"s because now it's triggering twice.

Got a push notification, I tap on it, it's now triggering 3x, 4x, 5x and so on..

One specific event I use is the OnNotificationOpened. That triggers when I tap on the notification box and it will open a specific page. Right now, what's going on is, after tapping on the notification box for the 3rd time for example, it will launch that page 3x as well so when I press the back button, I get back to the same page 2x.

How do you prevent these? How to tell the app that it's already running, so please do not re-register all the services that has been registerd and re-subscribe to the events that has already been subscribed to?

Thanks!


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