How do I make an alarm force-open my application?

Char les 1

I'm trying to make a very simple timer/alarm app in Xamarin for Android.
I have the timer, it ticks down, and when it hits 0, it sends a push notification.
But I want more, I want it to open my app up from sleep, to the page the timer was on, and display the name of the alarm.

I am using:
Xamarin.Android.Support.V4
Xamarin.Essentials
Xamarin.Forms

Any help would be appreciated.

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 26,316 Reputation points Microsoft Vendor

2022-05-16T09:44:44.197+00:00
You could see Android Job Scheduler, and check if AlarmManager is helpful. I also suggest you could try to run a Foreground Services, then your service will not be killed by Android System.
I'm not very clear how did your timer work, and how did you send the notification, you could try to launch your app by the package name :

Intent intent = PackageManager.GetLaunchIntentForPackage("com.companyname.***"); StartActivity(intent);