Flutter安装

macOS系统中安装Flutter

系统要求

在macOS系统中运行Flutter，系统需要满足如下要求：

• 操作系统：macOS(64-bit)
• 磁盘空间：2.8G（不包括IDE和其他工具需要的空间）
• 命令工具：Flutter需要如下命令行工具
  • bash
  • curl
  • git 2.x
  • mkdir
  • rm
  • unzip
  • which

获取Flutter SDK

1. 下载最新稳定版本Flutter SDK：
   https://storage.flutter-io.cn/flutter_infra/releases/stable/macos/flutter_macos_v1.12.13+hotfix.5-stable.zip
2. 解压zip文件到自定义文件夹

   cd ~/development
   unzip ~/Downloads/flutter_macos_v1.12.13+hotfix.5-stable.zip

3. 设置Flutter环境变量

   export PATH="$PATH:`pwd`/flutter/bin"

完成以上步骤表示已经成功安装Flutter SDK

检测环境是否正常

通过运行命令来检测当前环境是否已经安装所有依赖（增加 -v 参数可以查看更详细内容）

flutter doctor

#[✓] Flutter (Channel stable, v1.12.13+hotfix.5, on Mac OS X 10.15.2 19C57,
#    locale en)
# 
#[!] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
#    ! Some Android licenses not accepted.  To resolve this, run: flutter doctor
#      --android-licenses
#[!] Xcode - develop for iOS and macOS (Xcode 11.3)
#    ✗ CocoaPods installed but not working.
#        You appear to have CocoaPods installed but it is not working.
#        This can happen if the version of Ruby that CocoaPods was installed with
#        is different from the one being used to invoke it.
#        This can usually be fixed by re-installing CocoaPods. For more info, see
#        https://github.com/flutter/flutter/issues/14293.
#      To re-install CocoaPods, run:
#        sudo gem install cocoapods
#[✓] Android Studio (version 3.5)
#[!] Connected device
#    ! No devices available
#
#! Doctor found issues in 3 categories.

按每个步骤后面提示的命令即可完成相关配置和依赖的安装，如上所示执行如下命令即可：

flutter doctor --android-licenses

sudo gem install cocoapods