App instantly crashes via Testflight

Question

Created Sep ’22

Replies 3

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Hello fellow developers! I have created a Xamarin.Forms App for Android and iOS. It is running fine on Android, on iOS emulators and real devices in Debug and Release mode. But as soon as i deploy it to the app store and download it via Testflight, it crashes instantly when i try to open it. No crash logs, no relevant information in the console. At first i thought its crashing because of some entitlements missing. But I removed the relevant code from my app and i am still facing the same problem.

I am using Visual Studio 2022 17.2.0 Using my MacMini 2021 (latest OS version) to build.

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Answer 1

rbk120 OP

Sep ’22

I encountered the same issue, but it only happened on our iOS 12.1 device. I did a few Test Flight builds last week, which work fine, then did a couple this week that fail to launch on the iOS 12.1 device. It works fine on our other test devices. Very little changed between the builds and Ad Hoc builds work fine. I suspect it had something to do with bitcode processing, but I never really go to the bottom of the issue. I updated that test device to 12.5.6 and the problem went away. I figure if our real users encounter this, it'll be a pretty small subset and they can upgrade their OS to resolve it.

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Answer 2

Ptit-Xav OP

Sep ’22

Did you search in the device console log for an error at start of the app . Currently there seems to be a problem of «library not loaded » on some iOS version (eg : iOS 10.3.4)

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Answer 3

stefanfromperg OP

Sep ’22

Thanks for the reply... There aren't any errors in the device log at the start of the app.

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