如何正确实现颤振放大

Question

在过去的几天里，我一直在努力弄清楚如何解决我在“颤振放大器：error: compiling for iOS 9.0, but module 'Starscream' has a minimum deployment target of iOS 11.0和Target of URI doesn't exist: 'package:amplify_core/amplify_core.dart'”中遇到的问题

我试过的事情：

1. 遵循文档https://docs.amplify.aws/start/getting-started/setup/q/integration/flutter的教程。结果是：project directory/ios/Pods/AppSyncRealTimeClient/AppSyncRealTimeClient/Connection/AppSyncConnection/AppSyncSubscriptionConnection+ErrorHandler.swift:9:8: error: compiling for iOS 9.0, but module 'Starscream' has a minimum deployment target of iOS 11.0: project directory/build/ios/Debug-iphonesimulator/Starscream/Starscream.framework/Modules/Starscream.swiftmodule/x86_64-apple-ios-simulator.swiftmodule和Command CompileSwift failed with a nonzero exit code note: Using new build system note: Building targets in parallel note: Planning build note: Contructing build description。我取消了Podfile上的platform :ios, '9.0'行注释，并将其更改为platform :ios, '11.0'，同时在项目xc工作区上将开发目标更改为11。同样的错误也发生了。

1. 遵循文档https://aws.amazon.com/getting-started/hands-on/build-flutter-app-amplify/的教程。这导致了:当我试图导入核心时：Target of URI doesn't exist: 'package:amplify_core/amplify_core.dart'。这样，我就不能使用

()类.

1. 重新启动计算机.

删除放大文件夹的

1. .

1. 运行amplify uninstall，并从头开始尝试.

1. 在本网站和其他网站上搜索其他帖子。

运行amplify clean.的

要注意的事情：

1. 放大安装、init和配置步骤没有返回错误。
2. 如果我删除放大器依赖项amplify_flutter: '<1.0.0' amplify_auth_cognito: '<1.0.0' amplify_analytics_pinpoint: '<1.0.0'，则应用程序在模拟器上运行得很好。一旦我把它们放回去，错误就会返回。

Answer 1

您希望将import 'package:amplify_core/amplify_core.dart'更改为import 'package:amplify_flutter/amplify.dart';，然后当您添加插件时，您会想要这样做：Amplify.addPlugins([authPlugin, storage]);

在执行此操作之前，我还运行了flutter upgrade，只需确保保存所有更改即可。您可以在该示例中找到更多信息。

https://github.com/aws-amplify/amplify-flutter/blob/master/example/lib/main.dart

Answer 2

如果您正在学习本教程，https://docs.amplify.aws/start/getting-started/setup/q/integration/flutter

然后，在依赖项的步骤中，有一个更正：https://docs.amplify.aws/start/getting-started/setup/q/integration/flutter#add-amplify-to-your-application

应该是这样的：

dependencies:
  flutter:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^1.0.2

dev_dependencies:

  amplify_flutter: <1.0.0
  amplify_datastore: <1.0.0
  amplify_api: <1.0.0
  amplify_auth_cognito: <1.0.0
  flutter_test:
    sdk: flutter

那就跑吧：

颤振清洁

颤栗酒吧