Question 75926 in Flutter Question posted in
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'viewConfiguration' isn't defined for the class 'FlutterView'. – 'FlutterView' is from 'dart:ui'

My flutter project is : here. When I try to run the code present in the Rahulraj branch, I get the following error:

/C:/Users/Sanmitha/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_screenutil-5.6.1/lib/src/screen_util.dart:64:16: Error: The getter 'viewConfiguration' isn't defined for the class 'FlutterView'.
 - 'FlutterView' is from 'dart:ui'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'viewConfiguration'.
    if (window.viewConfiguration.geometry.isEmpty) {
               ^^^^^^^^^^^^^^^^^
Target kernel_snapshot failed: Exception


FAILURE: Build failed with an exception.

* Where:
Script 'C:flutterpackagesflutter_toolsgradleflutter.gradle' line: 1153

* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:flutterbinflutter.bat'' finished with non-zero exit value 1

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 6s
Exception: Gradle task assembleDebug failed with exit code 1

Could anyone help me to debug this issue??? Please..?

Tags:

2

Answers


  1. 0

    Update: flutter_screenutil is updated, just use the actual version (5.7.0+).

    = Original answer ==========================================

    The issue is in the last flutter update:
    https://github.com/flutter/flutter/issues/121742. Property FlutterView.viewConfiguration in is removed, but it’s used in flutter_screenutil library.

    Possible solutions:

    • rollback to any previous version of Flutter
    • link this library form my fork of flutter_screenutil, where this issue is fixed (only temporary soluion!, return the dependency back as soon as flutter_screenutil will be updated):
      flutter_screenutil:
    git:
      url: https://github.com/dmakeev/flutter_screenutil
      ref: fix-463

    General recommendation is to use a Stable Flutter channel instead of Master.

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  2. 0

    This error is occurring in the Latest Version(3.9.0-1.0) of Flutter (March 2023) .
    The Possible Solution to this is,

    1. Use Flutter Version Manager(fvm) https://pub.dev/packages/fvm to downgrade the version of flutter in project.
      simply flutter pub global activate fvm

    OR..
    2. Remove this package flutter_screenutil and use different options like MediaQuery.

    OR..
    3. Downgrade flutter flutter downgrade v1.17.0

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