Question 77954 in Flutter Question posted in
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Error while building after updating flutter

After updating Flutter and Dart, building app fails due to following error.

Error (Xcode):
../../.pub-cache/hosted/pub.dev/flutter_screenutil-5.6.0/lib/src/screen_util.dar t:58:5: Error: Type ‘FlutterWindow’ not found.

2 apps have same error, and it worked before updating.
Other collaborator also has error after updating, but different point:

Error(Xcode): …. firebase_app.dart:18:25: Error: Member not
found:’FirebaseAppPlatform.verifyExtends’

Since We have different error, code or packages might not be the problem.

I tried ‘flutter clean’, ‘clean build folder @Xcode’, ‘pod repo update’, but still error exists.

It is very thankful if you have any solutions.

Tags:

2

Answers


  1. 0

    I solved it by changing flutter channel to stable. Type ‘flutter channel’ to know which branch you are currently using.
    Type in terminal: ‘flutter channel stable’, then ‘flutter upgrade’

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  2. 0

    FlutterWindow API is deprecated.

    Now if you are using the flutter master channel. Then edit the source code by changing the type FlutterWindow to FlutterView in all the dart files which shows the error

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