'Flutter build release apk with no sound null safety?

Debug apk works fine, release apk not working..

Tried flutter build apk --no-sound-null-safety it builds release apk but does not works.



Solution 1:[1]

Issue Solved!! Actually, the problem was with 'http' as SSL certificate was not included for the admin panel hence, app showed Bad state: Insecure HTTP is not allowed by platform error in some devices while it was running in my Mi note4 mobile phone.

Added android:usesCleartextTraffic="true" line in AndroidManifest.xml file inside <manifest <application android:usesCleartextTraffic="true""> </application> </manifest> tag

Solution 2:[2]

The ability to mix language versions frees package maintainers to migrate their code, with the knowledge that even legacy users can get new bug fixes and other improvements. However, mixed-version programs don’t get all the advantages that null safety can bring. Read here

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Code for building APK: flutter build apk --no-sound-null-safety

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Nikhil Patil
Solution 2 DL Studio