How to disable all Logs [debugPrint()] in release build in flutter?

Question

I have installed a release build apk in the android device but if I connect that device to Android studio then I am able to see all Logs/debugPrint statements.

Is there any way to disable the all the logs ?

Solution 1

I combined the accepted answer with the idea from here and used it main.dart to silence all debugPrint everywhere.

const bool isProduction = bool.fromEnvironment('dart.vm.product');
void main() {
  if (isProduction) {      
      // analyser does not like empty function body
      // debugPrint = (String message, {int wrapWidth}) {};
      // so i changed it to this:
      debugPrint = (String? message, {int? wrapWidth}) => null;

  } 
  runApp(
    MyApp()
  );
}

Solution 2

You can assign a dummy function to the global debugPrint variable:

import 'package:flutter/material.dart';

main() {
  debugPrint = (String message, {int wrapWidth}) {};
}

Comments

[shadowsheep]

And how could I check the build variant so that I can do it only when I compile for production? I don't like this solution: stackoverflow.com/questions/47438564/… and I don't wanna use package like simple_preprocessor.

[Günter Zöchbauer]

I think the linked SO question us the way to go. You can also create a build script that modifies a source file before it calls flutter build ...

[shadowsheep]

Dunno, but thanks. I’ll look forward this custom build script way. If you already have some links they’ll be appreciated ;)

[Günter Zöchbauer]

You can use a simple shell script or a bash script. I have a project where I copy a different Dart file that contains some config values that are imported somewhere into place before building. This way I don't need to modify a files content

[shadowsheep]

I’ll do some further research about this topic. Maybe I’ll post a specific question. For now upvoted your answer! ;)

[K Pradeep Kumar Reddy]

The link you have given is not working. Getting page not found error.

[Sebastian]

i fixed the link. no idea what went wrong before :(

[mortred95]

@Sebastian I think you always check the bool kDebugMode/kReleaseMode which is a constant provided by Flutter's foundation.

[bounxye]

will compiler remove all calls for function which does nothing?

[Sebastian]

I know nothing about that, but it is mentioned here that it does: stackoverflow.com/questions/53256139/…