如何在 Flutter APK Build 中使用 Visual Studio AppCenter 处理“Cannot run with sound null safety”错误

Question

I'm trying to add AppCenter to my application but I get build error:

Error: Cannot run with sound null safety, because the following dependencies don't support null safety:

• package:appcenter
• package:appcenter_analytics
• package:appcenter_crashes

For solutions, see https://dart.dev/go/unsound-null-safety

FAILURE: Build failed with an exception.

I added auto-generated code from AppCenter to my ->app/build.gradle

dependencies {
    def appCenterSdkVersion = '4.3.1'
    implementation "com.microsoft.appcenter:appcenter-analytics:${appCenterSdkVersion}"
    implementation "com.microsoft.appcenter:appcenter-crashes:${appCenterSdkVersion}"
}

Answer 1

You cannot run your project with these dependencies with sound null safety. If you're sure that you won't be having any Null Pointer Exceptions, then run your project from the root directory with this command:

flutter run --no-sound-null-safety

Answer 2

Spending some hours in pain, I found my solution and post it here

We should not import appcenter, appcenter_analytics appcenter_crashespackage in main.dart (also not import them into pubspec.yaml) What we should do is, override "onCreate" method in MainActivity.java and implement appcenter there. You can find more details in my answer.