Flutter-Mac安装

Flutter是什么

Flutter是谷歌的移动UI框架，可以快速在iOS和Android上构建高质量的原生用户界面。 Flutter可以与现有的代码一起工作。在全世界，Flutter正在被越来越多的开发者和组织使用，并且Flutter是完全免费、开源的。

Flutter中文网

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安装

• 使用git将Flutter项目克隆到本地，
  然后将Flutter添加到本地环境变量(终端)

cd 到准备好的文件夹
git clone -b dev https://github.com/flutter/flutter.git

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• 配置

打开环境变量文件:

open ~/.bash_profile

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保存后,再次执行这个文件:

source ~/.bash_profile

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我们运行一下:

flutter doctor

第一次运行一个flutter命令（如flutter doctor）时，它会下载它自己的依赖项并自行编译。以后再运行就会快得多

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• 错误

[✗] Android toolchain - develop for Android devices
    ✗ Unable to locate Android SDK.
      Install Android Studio from:
      https://developer.android.com/studio/index.html
      On first launch it will assist you in installing the Android SDK
      components.

需要安装android studio并且设置好$ANDROID_HOME这个环境变量

android studio下载

安装好后,打开bash_profile

open -e .bash_profile

在bash_profile里加上

export ANDROID_HOME="/Users/用户名/Library/Android/sdk" //android sdk目录，替换为你自己的
export PATH=${PATH}:${ANDROID_HOME}/tools
export PATH=${PATH}:${ANDROID_HOME}/platform-tools

更新配置

source .bash_profile

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• 错误

[✗] Android toolchain - develop for Android devices
    ✗ Unable to locate Android SDK.
      Install Android Studio from:
      https://developer.android.com/studio/index.html
      On first launch it will assist you in installing the Android SDK
      components.
      (or visit https://flutter.dev/setup/#android-setup for detailed
      instructions).
      If the Android SDK has been installed to a custom location, set
      ANDROID_HOME to that location.
      You may also want to add it to your PATH environment variable.

根据提示运行：

flutter doctor --android-licenses

然后根据提示一直y，y到结束为止。

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• 错误

去App Store安装了xcode后,运行

[✗] iOS tools - develop for iOS devices
    ✗ libimobiledevice and ideviceinstaller are not installed. To install with
      Brew, run:
        brew update
        brew install --HEAD usbmuxd
        brew link usbmuxd
        brew install --HEAD libimobiledevice
        brew install ideviceinstaller
    ✗ ios-deploy not installed. To install:
        brew install ios-deploy

根据错误提示运行,例如:

brew update
...

如果重复提示 iOS toolchain - develop for iOS devices，进入/usr/local/Cellar目录删除libimobiledevice、usbmuxd和ideviceinstaller库，重启电脑即可

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• 错误

[!] Android Studio (version 3.4)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.

打开Android Studio软件 -> preferences

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然后 我们就可以建立flutter的工程了

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• 警告

[!] Connected device
    ! No devices available

连接手机即可

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• 最终

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel dev, v1.8.2, on Mac OS X 10.13.6 17G5019, locale
    zh-Hans-CN)
 
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.1)
[!] Xcode - develop for iOS and macOS (Xcode 10.1)
    ! CocoaPods out of date (1.6.0 is recommended).
        CocoaPods is used to retrieve the iOS and macOS platform side's plugin
        code that responds to your plugin usage on the Dart side.
        Without CocoaPods, plugins will not work on iOS or macOS.
        For more info, see https://flutter.dev/platform-plugins
      To upgrade:
        brew upgrade cocoapods
        pod setup
[✓] iOS tools - develop for iOS devices
[✓] Android Studio (version 3.4)
[✓] Connected device (1 available)

CocoPods 警告我们也可以使用了

强迫症的解决方案

找出目前版本的pod路径
which pod

移除现有pod
rm -rf /usr/local/bin/pod

重新下载pod
sudo gem install cocoapods

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• 创建项目

cd 到创建目录

//在当前路路径创建⼀一个新的名叫flutter_demo的新项⽬目 
flutter create your_flutter_demo

//创建⼀一个可包含dart源码的flutter库
flutter create --template=package your_flutter_demo

//创建⼀一个域名为com.guahao的java语⾔言的flutter项⽬目(⽀支持object-C、swift、java、kotlin)
flutter create --org="com.guahao" -a java your_flutter_demo

在VS Code 面板中，按下快捷键 Ctrl + Shift + P 打开命令面板

在命令面板中输入 flutter

选择 flutter:New Project 选项创建新项目。

• IDE

这里我使用的Visual Studio Code进行开发

设置中文
macOS 快捷键：command + shift + p
搜索:configure language

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下载插件 shift + command + x

搜索dart code 安装

搜索flutter 安装

写第一个flutter应用