Flutter安裝

macOS系統中安裝Flutter

系統要求

在macOS系統中運行Flutter，系統需要滿足如下要求：

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

獲取Flutter SDK

1. 下載最新穩定版本Flutter SDK：
   https://storage.flutter-io.cn/flutter_infra/releases/stable/macos/flutter_macos_v1.12.13+hotfix.5-stable.zip
2. 解壓zip文件到自定義文件夾

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

3. 設置Flutter環境變量

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

完成以上步驟表示已經成功安裝Flutter SDK

檢測環境是否正常

通過運行命令來檢測當前環境是否已經安裝所有依賴（增加 -v 參數可以查看更詳細內容）

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.

按每個步驟後面提示的命令即可完成相關配置和依賴的安裝，如上所示執行如下命令即可：

flutter doctor --android-licenses

sudo gem install cocoapods