更新了一下flutter，就突然一片红
FAILURE: Build failed with an exception.
What went wrong:
Could not determine the dependencies of task ':app:compileDebugJavaWithJavac'.
Could not resolve all task dependencies for configuration ':app:debugCompileClasspath'.
Could not resolve io.flutter:flutter_embedding_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
Required by:
project :app
Could not resolve io.flutter:flutter_embedding_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
> Could not get resource 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/flutter_embedding_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> Could not GET 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/flutter_embedding_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> https
Could not resolve io.flutter:flutter_embedding_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
> Could not get resource 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/flutter_embedding_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> Could not GET 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/flutter_embedding_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> https
Could not resolve io.flutter:flutter_embedding_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
> Could not get resource 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/flutter_embedding_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> Could not GET 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/flutter_embedding_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> https
Could not resolve io.flutter:x86_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
Required by:
project :app
Could not resolve io.flutter:x86_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
> Could not get resource 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> Could not GET 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> https
Could not resolve io.flutter:x86_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
> Could not get resource 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> Could not GET 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> https
Could not resolve io.flutter:x86_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
> Could not get resource 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> Could not GET 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> https
Could not resolve io.flutter:x86_64_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
Required by:
project :app
Could not resolve io.flutter:x86_64_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
> Could not get resource 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_64_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_64_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> Could not GET 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_64_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_64_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> https
Could not resolve io.flutter:x86_64_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
> Could not get resource 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_64_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_64_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> Could not GET 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_64_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_64_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> https
Could not resolve io.flutter:x86_64_debug:1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.
> Could not get resource 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_64_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_64_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> Could not GET 'https://https/storage.flutter-io.cn/download.flutter.io/io/flutter/x86_64_debug/1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347/x86_64_debug-1.0.0-9b905d3f03f27a332ad861934da0f5111c24d347.pom'.
> https
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 26s
https://blog.csdn.net/u014453811/article/details/54582426
IOS开发不知道，安卓的话，进入Android 文件夹，其中有个文件中能指定目标API级别的（好像是叫什么Target sdk level），改成你本地有的Android SDK级别