FATAL UNHANDLED EXCEPTION: System.InvalidOperationException: Handler is not set on element

Question

FATAL UNHANDLED EXCEPTION: System.InvalidOperationException: Handler is not set on element

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I'm doing a MAUI migration in my own project and I'm stumbling with the following error, please support me. FATAL UNHANDLED EXCEPTION: System.InvalidOperationException: Handler is not set on element

Let's talk about when this error occurs. We are currently building an app with MAUI. One of the features of the app is push notifications. When you press the push notification, it transitions to the app as a normal operation, but when you go to the home screen and press the push notification with the app in the background, the above error is detected. The location of the error is base. OnCreate(bundle); It can be seen in. What measures should be taken to eliminate the error?

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,456 Reputation points Microsoft External Staff

2024-08-06T06:12:22.92+00:00

The location of the error is base. OnCreate(bundle); It can be seen in.

The OnCreate method in MainActivity on Android, right?

but when you go to the home screen and press the push notification with the app in the background, the above error is detected.

Could you share some code snippets about the push notification with me? Do you update UI on some pages after receiving the notification?
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,456 Reputation points Microsoft External Staff

2024-09-03T07:24:23.6166667+00:00

I have not heard from you for a couple of days. Please let me know if there is anything that I can help here.