Flutter 踩坑之 Mac下Flutter运行权限问题

约定不等于承诺〃 2022-03-11 18:39 719阅读 0赞

小拉最近入坑 Flutter, 开始踩坑~

## 安装 Flutter ##

根据 [https://flutterchina.club/setup-macos/][https_flutterchina.club_setup-macos] 步骤 学习安装

因为是一个库，所以我安装到 `/usr/local` 目录下

cd /usr/local
    sudo git clone -b stable https://github.com/flutter/flutter.git

## 检测 Flutter 环境 ##

sudo flutter doctor

这个过程很长，需要下载一些库

## 创建 Flutter 工程 ##

sudo flutter create myapp

我们发现每次运行 Flutter 命令都要切换到root权限，这很麻烦

## 解决频繁切换 root 权限 ##

思路：将Flutter 库的所有文件的用户及所有组切到到当前用户下

cd /usr/local
    sudo chown -R ruglcc:admin ./Flutter
    sudo chown -R ruglcc:admin /Users/ruglcc/.pub-cache

`chown -R` 递归设置所有目录及文件

`ruglcc:admin` 对应 `用户名:组名`

创建 Demo 工程

cd ~/code
    flutter create flutter_demo #这时就不再需要加 sudo了
    # 输出 
    Running "flutter packages get" in fapp2...                         14.0s
    Wrote 66 files.
    All done!

## 模拟器运行 Flutter项目 ##

### 列出模拟器 ###

flutter emulators

小拉机器上安装的模拟器：

4 available emulators:
    
    Nexus_5X_9.0        • Nexus 5X      • Google • Nexus 5X 9.0
    Nexus_5X_API_28     • Nexus 5X      • Google • Nexus 5X API 28
    Nexus_6P_API_27     • Nexus 6P      • Google • Nexus 6P API 27
    apple_ios_simulator • iOS Simulator • Apple
    
    To run an emulator, run 'flutter emulators --launch <emulator id>'.
    To create a new emulator, run 'flutter emulators --create [--name xyz]'.
    
    You can find more information on managing emulators at the links below:
      https://developer.android.com/studio/run/managing-avds
      https://developer.android.com/studio/command-line/avdmanager

启动一个Android 模拟器

flutter emulators --launch Nexus_5X_9.0

启动一个 iOS 模拟器

flutter emulators --launch apple_ios_simulator

列出当前开启的模拟器

flutter devices

# 显示对应的二个模拟器设备
    3 connected devices:
    Android SDK built for x86 • emulator-5554 • android-x86 • Android 9 (API 28) (emulator)
    iPhone X • 67ADA545-4FC6-458D-AE43-CC6CAF013A6B • ios • iOS 12.1 (simulator)

指定设备设备运行模拟器

flutter run -d emulator-5554

![006tKfTcly1g0vd1os9jpj30bh0hs0sx.jpg][]

[https_flutterchina.club_setup-macos]: https://flutterchina.club/setup-macos/
[006tKfTcly1g0vd1os9jpj30bh0hs0sx.jpg]: https://ws3.sinaimg.cn/large/006tKfTcly1g0vd1os9jpj30bh0hs0sx.jpg