周末玩下flutter，遇到好几个问题
一、更新了flutter 后原有工程报错
解决：
二、编译报错 ßCheck Github 项目后sdk版本不一样问题
Running "flutter pub get" in flutter_wanandroid... Because every version of flutter_test from sdk depends on path 1.6.2 and dio >=3.0.0-dev.1 depends on path ^1.6.4, flutter_test from sdk is incompatible with dio >=3.0.0-dev.1.
So, because flutter_wanandroid depends on both dio ^3.0.3 and flutter_test any from sdk, version solving failed.
解决：
更新 flutter upgrade --force
flutter doctor
flutter run
如果是新项目可以指定版本
如果出现Waiting for another flutter command to release the startup lock..只要进入flutter sdk目录，然后找到bin/cache/lockfile文件，删除后再运行flutter doctor
升级Flutter
https://www.jianshu.com/p/7cd254b847b7
三、下载Github上开源项目后如果没签名文件记得注释掉release签名相关代码
四、AndroidStudio 更新flutter后发现不能选择IOS模拟器
五、类型问题
原因:该返回widget的地方返回了 state
六、flutter 在As里边运行正常，为啥用xcode打开就编译报错了呐
解决：删除pod 重新 pod install
更新Flutter插件之后记得 pod update
七、生命周期执行顺序：
八、Mac版本和真机调式技巧： 对于高版本IPhone 设备，先升级Mac版本，然后再更新Xcode版本到最新
Mac
九、Sdk路径
https://www.jianshu.com/p/75f5de4deb0b?utm_campaign=maleskine&utm_content=note&utm_medium=seo_notes&utm_source=recommendation
十、Error: 'Router' is imported from both
命名不要和系统关键词设置的一样
