demo:
https://github.com/hc2088/fairdemo

按照 FlutterFair接入文档操作Counting计数器

flutter2.5.0 接fair 问题

• 1、flutter pub run build_runner build
  报错

   Failed to build build_runner:build_runner:
../../shared/opt/fvm/versions/2.5.0/.pub-cache/hosted/pub.flutter-io.cn/analyzer-0.41.2/lib/src/error/best_practices_verifier.dart:258:50: Error: The property 'displayString' is defined in multiple extensions for 'TargetKind' and neither is more specific.
 - 'TargetKind' is from 'package:meta/meta_meta.dart' ('../../shared/opt/fvm/versions/2.5.0/.pub-cache/hosted/pub.flutter-io.cn/meta-1.7.0/lib/meta_meta.dart').
Try using an explicit extension application of the wanted extension or hiding unwanted extensions from scope.
        var kindNames = kinds.map((kind) => kind.displayString).toList()
                                                 ^^^^^^^^^^^^^
../../shared/opt/fvm/versions/2.5.0/.pub-cache/hosted/pub.flutter-io.cn/analyzer-0.41.2/lib/src/error/best_practices_verifier.dart:1950:14: Context: This is one of the extension members.
  String get displayString {
             ^^^^^^^^^^^^^
../../shared/opt/fvm/versions/2.5.0/.pub-cache/hosted/pub.flutter-io.cn/meta-1.7.0/lib/meta_meta.dart:91:14: Context: This is one of the extension members.
  String get displayString {
             ^^^^^^^^^^^^^
../../shared/opt/fvm/versions/2.5.0/.pub-cache/hosted/pub.flutter-io.cn/analyzer-0.41.2/lib/src/error/best_practices_verifier.dart:260:36: Error: The getter 'commaSeparatedWithOr' isn't defined for the class 'List<dynamic>'.
 - 'List' is from 'dart:core'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'commaSeparatedWithOr'.
        var validKinds = kindNames.commaSeparatedWithOr;
                                   ^^^^^^^^^^^^^^^^^^^^
pub finished with exit code 1

报错分析：

查看 flutter 2.5.0 dart版本 是2.14.0
$FLUTTER_ROOT/bin/cache/dart-sdk/version

查看flutter 2.5.0依赖的meta 版本
$FLUTTER_ROOT/packages/flutter/pubspec.yaml

flutter	flutter-meta版本	fair compiler- analyzer	analyzer - meta
flutter1.17.3	meta: 1.1.8	analyzer: ^0.41.2	meta: ^1.2.3
flutter 1.22.4	meta: 1.3.0-nullsafety.3	analyzer: ^0.41.2	meta: ^1.2.3
flutter 2.0.6	meta: 1.3.0	analyzer: ^0.41.2	meta: ^1.2.3
flutter 2.2.2	meta: 1.3.0	analyzer: ^0.41.2	meta: ^1.2.3
flutter 2.5.0	meta: 1.7.0	analyzer: ^0.41.2	meta: ^1.2.3

meta最高版本1.2.4 ，从1.3.0开始是安全版本，最新1.7.0
analyzer最高版本0.41.2，从1.0.0开始是空安全版本，最新4.0.0

flutter2.5.0 和flutter1.17.3都不无法使用fair compiler

• 2、flutter pub get
  没问题

• 3、使用模拟器运行

image.png

但是用file 查看
./fair/fair/ios/FairDynamicFlutter/Products/FairDynamicFlutter.framework/FairDynamicFlutter

fair/fair/ios/FairDynamicFlutter/Products/FairDynamicFlutter.framework/FairDynamicFlutter: Mach-O universal binary with 4 architectures: [arm_v7:Mach-O dynamically linked shared library arm_v7] [x86_64:Mach-O 64-bit dynamically linked shared library x86_64] [i386:Mach-O dynamically linked shared library i386] [arm64:Mach-O 64-bit dynamically linked shared library arm64]
/Volumes/huc/xx/fair/fair/ios/FairDynamicFlutter/Products/FairDynamicFlutter.fram

分明是支持4种架构
arm_v7
x86_64
i386
arm64

切到真机运行成功了

image.png

flutter 2.5.0
IOS插件 FairDynamicFlutter.framework 不支持 模拟器运行

flutter 2.0.6接fair 问题

报错：

flutter2.0.6pub get成功但是运行失败.jpg.jpg

flutter	dart
flutter1.17.3	dart 2.8.4
flutter 1.22.4	dart 2.10.4
flutter 2.0.6	dart 2.12.3
flutter 2.2.2	dart 2.13.3
flutter 2.5.0	dart 2.14.0

解决方法：

pubspec.yaml
sdk: ">=2.10.4 <3.0.0"改为 sdk: ">=2.8.0 <3.0.0"就够了

 sudo xattr -d com.apple.quarantine $FLUTTER_ROOT/bin/cache/artifacts/usbmuxd/iproxy

执行完上面命令后
2.8.0和2.10.4好像又都没问题了

终于算是运行成功了

• flutter pub get 添加fair plugin
• flutter pub run build_runner build 运行fair compiler生成fair
  bundle
• fair plugin FairDynamicFlutter.framework 运行模拟器也没问题

image.png