记一次升级FlutterSDK失败的光辉历史

提示&＃xff1a;本文内容颇为复杂&＃xff0c;涉及到的疑难杂症也颇多。

一切源于一个简单的指令&＃xff1a;flutter upgrade&＃xff0c;然后开启了崩溃的黑色3小时。

刚打开项目&＃xff0c;看到控制台的编译log提示Flutter SDK可以更新&＃xff0c;行吧&＃xff0c;那就更新吧&＃xff0c;想着应该也是一个很简单的事情&＃xff0c;因为我Android Studio也是经常更新的。

ok&＃xff0c;编译结束&＃xff0c;Terminal中直接执行flutter upgrade&＃xff0c;因为之前也在官方文档中看到过升级 Flutter的介绍&＃xff0c;内容不多&＃xff0c;以为不复杂呢&＃xff0c;结果这一执行直接掉进了无底的深渊。。

对插件下手

执行之后显示如下&＃xff1a;

D:\FlutterProjects\wanandroid_flutter>flutter upgrade
Checking Dart SDK version...
Downloading Dart SDK from Flutter engine 52c7a1e849a170be4b2b2fe34142ca2c0a6fea1f...
Downloading the Dart SDK using the BITS service failed, retrying with WebRequest...
Invoke-WebRequest : 请求被中止: 未能创建 SSL/TLS 安全通道。
所在位置 D:\flutter\flutter_windows_v1.2.1-stable\flutter\bin\internal\update_dart_sdk.ps1:62 字符: 5
&＃43; Invoke-WebRequest -Uri $dartSdkUrl -OutFile $dartSdkZip
&＃43; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~&＃43; CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest]&＃xff0c;WebException&＃43; FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommandError: Unable to update Dart SDK. Retrying...


网上搜了一会&＃xff0c;根本没结果&＃xff0c;但是我此刻也依然没当回事&＃xff0c;并开启了一些骚操作。。

上面看到要升级Dart的sdk&＃xff0c;因为dart的sdk是包含在flutter中的&＃xff0c;在as在装flutter插件的时候还提示要装dart插件&＃xff0c;
所以我直接从插件plugin下手了。

• 卸载dart插件然后重启&＃xff0c;卸载flutter插件然后重启。
• 安装dart插件然后重启&＃xff0c;安装flutter插件然后重启。

但是编译还是跑不起来&＃xff0c;报什么错忘了&＃xff0c;继续骚操作。。

对SDK下手

既然插件不行&＃xff0c;行吧&＃xff0c;那就直接手动升级sdk吧&＃xff0c;此刻心态依然乐观&＃xff0c;说来也是心大。

然后跑去github看了一下版本

纳尼&＃xff0c;一天一个版本&＃xff1f;&＃xff1f;&＃xff1f; 这也太假了吧&＃xff0c;我只要正式版就行啊。

然后又跑去官网看看&＃xff1a;

嗯&＃xff0c;这还差不多&＃xff0c;我上个版本就是 1.2.1的&＃xff0c;最新1.5.4的&＃xff0c;那行吧&＃xff0c;下载下来

• 解压
• 删掉1.2.1的版本
• 改环境变量
• 重启AS

emmmm 还是不行&＃xff0c;且文件全部报错&＃xff0c;开始有一点慌了。。

然后想起来项目中的路径可能还没改呢&＃xff0c;然后在设置中把flutter sdk路径改成1.5.4的&＃xff0c;感觉应该可以了

改好之后&＃xff0c;满怀着期待重新编译&＃xff0c;依然不行&＃xff0c;此刻心态已经有点崩了&＃xff0c;现在是退不能退 进不能进了。

尝试一下invalidate and restart&＃xff0c;emmm 也不行

报错如下&＃xff1a;

Warning! This package referenced a Flutter repository via the .packages file that is no longer available. The repository from which the &＃39;flutter&＃39; tool is currently executing will be used instead.running Flutter tool: D:\flutter\flutter_windows_v1.5.4-hotfix.2-stable\flutterprevious reference : D:\flutter\flutter_windows_v1.2.1-stable\flutter
This can happen if you deleted or moved your copy of the Flutter repository, or if it was on a volume that is no longer mounted or has been mounted at a different location. Please check your system path to verify that you are running the expected version (run &＃39;flutter --version&＃39; to see which flutter is on your path).


嗯&＃xff0c;我也知道两次版本不对&＃xff0c;可是在哪改、怎么改呢。

对项目配置下手

我开始在项目中找有没有编译时类似build产生的文件&＃xff0c;最后在根目录的.package文件中发现还是1.2.1的版本的


# Generated by pub on 2019-05-28 10:50:34.749388.
async:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/async-2.0.8/lib/
boolean_selector:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/boolean_selector-1.0.4/lib/
charcode:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/charcode-1.1.2/lib/
collection:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/collection-1.14.11/lib/
COOKIE_jar:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/COOKIE_jar-1.0.0/lib/
cupertino_icons:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/cupertino_icons-0.1.2/lib/
dio:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/dio-2.1.3/lib/
flutter:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/packages/flutter/lib/
flutter_page_indicator:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/flutter_page_indicator-0.0.3/lib/
flutter_swiper:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/flutter_swiper-1.1.6/lib/
flutter_test:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/packages/flutter_test/lib/
flutter_webview_plugin:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/flutter_webview_plugin-0.3.5/lib/
fluttertoast:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/fluttertoast-3.0.4/lib/
matcher:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/matcher-0.12.3&＃43;1/lib/
meta:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/meta-1.1.6/lib/
path:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/path-1.6.2/lib/
pedantic:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/pedantic-1.4.0/lib/
quiver:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/quiver-2.0.1/lib/
sky_engine:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/bin/cache/pkg/sky_engine/lib/
source_span:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/source_span-1.5.4/lib/
stack_trace:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/stack_trace-1.9.3/lib/
stream_channel:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/stream_channel-1.6.8/lib/
string_scanner:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/string_scanner-1.0.4/lib/
term_glyph:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/term_glyph-1.1.0/lib/
test_api:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/test_api-0.2.2/lib/
transformer_page_view:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/transformer_page_view-0.1.6/lib/
typed_data:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/typed_data-1.1.6/lib/
vector_math:file:///D:/flutter/flutter_windows_v1.2.1-stable/flutter/.pub-cache/hosted/dart-pub.mirrors.sjtug.sjtu.edu.cn%2547/vector_math-2.0.8/lib/
wanandroid_flutter:lib/


文件备份一下然后直接删掉&＃xff0c;看看会不会编译生成&＃xff0c;结果没有

那行吧&＃xff0c;直接把路径替换了

天呐&＃xff0c;依然不行&＃xff0c;搞这个的时间早都超出预算了&＃xff0c;心态已经崩了&＃xff0c;只能硬着头皮上了。

只能在项目设置中尝试了。

打开Project Structure&＃xff0c;果然他丫的还是有问题&＃xff0c;但是看到了黎明的曙光。

• 1&＃xff0c;还是上面的问题。
• 2&＃xff0c;果然还是有一个路径没有改
• 3&＃xff0c;kotlin的直接忽略

先改掉2的路径问题

把1.2.1的版本路径换成1.5.4的路径即可。

但是1要fix的话提示我全部移除&＃xff0c;那行吧&＃xff0c;试试。

编译一下还是不行&＃xff0c;此刻已然是生无可恋了。

因为之前打开了pubspec.yaml文件查看是不是有配置什么的没改&＃xff0c;然后随手点了下packages get&＃xff0c;结果OK了&＃xff01;&＃xff01;&＃xff01;

复盘

因为是手动升级的flutter SDK&＃xff0c;所以项目中除了自带的库以外还有第三方的库&＃xff0c;都还是原来的路径&＃xff0c;在把全部路径修改完之后&＃xff0c;需要packages get 重新下载到新版本的路径中去才能引用。

之前也尝试过packages upgrade&＃xff0c;但是等了半天没反应&＃xff0c;也没在任务管理中看到下载&＃xff0c;所以就没当回事。。

翻墙这种小事就不提了。。

期间也遇到

Waiting for another flutter command to release the startup lock...


解决办法&＃xff1a;

• 打开任务管理器&＃xff0c;结束掉Android Studio 和 Dart.exe
• 删除flutter\bin\cache目录下的lockfile文件&＃xff0c;然后重启AS即可

本文旨为flutter upgrade 升级flutter失败之后手动升级的记录&＃xff0c;没准你一下就成功了。。

心累。。

Flutter 环境配置&＃xff1a;https://blog.csdn.net/yechaoa/article/details/89150852

官方文档&＃xff1a;https://flutter.dev/