flutter 切换环境

终端运行flutter channel命令查看当前flutter 环境 分支

Mac:~ mac$ flutter channel
Flutter channels:
  master
  dev
  beta
* stable

带有*号的为当前分支
切换分支命令 flutter channel 分支名 比如 flutter channel beta和flutter channel dev

Mac:~ mac$ flutter channel dev
Switching to flutter channel 'dev'...
git: Switched to a new branch 'dev'
git: Branch 'dev' set up to track remote branch 'dev' from 'origin'.
Successfully switched to flutter channel 'dev'.

运行flutter channel查看是否切换分支成功，如果本地没有要切换的分支命令会执行下载操作

Downloading Dart SDK from Flutter engine defa8be2b10650dad50dfee9324ed8d16eeec13f...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  175M  100  175M    0     0  10.0M      0  0:00:17  0:00:17 --:--:-- 10.2M
Building flutter tool...
Flutter assets will be downloaded from https://storage.flutter-io.cn. Make sure
you trust this source!
Downloading Material fonts...                                      456ms
Downloading package sky_engine...                                  225ms
Downloading flutter_patched_sdk tools...                         1,376ms
Downloading flutter_patched_sdk_product tools...                 1,090ms
Downloading darwin-x64 tools...                                     3.1s
Downloading libimobiledevice...                                     27ms
Downloading usbmuxd...                                              47ms
Downloading libplist...                                             37ms
Downloading openssl...                                             166ms
Downloading ios-deploy...                                           29ms
Downloading darwin-x64/font-subset tools...  

显示如下

Flutter channels:
  master
* dev
  beta
  stable

即是切换分支成功。
如果报错信息如下：

git: error: Your local changes to the following files would be overwritten by checkout:
git:    packages/flutter/lib/src/widgets/navigator.dart
git: Please commit your changes or stash them before you switch branches.
git: Aborting
Switching channels failed with error code 1.

cd到本地flutter环境目录下执行git checkout .命令，再次执行切换分支的命令即可成功。