flutter使用问题汇总

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• 安装brew报错

连接ios真机设备时，要求安装homebrew，进入homebrew复制安装指令/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
运行后报错
fatal: unable to access ‘https://github.com/Homebrew/brew/

解决
更换brew下载源地址为国内/bin/zsh -c "$(curl -fsSL https://gitee.com/cunkai/HomebrewCN/raw/master/Homebrew.sh)"

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• 执行brew install报错m4

image.png
解决
git路径问题造成，执行brew -v会发现输出如git config --global --add safe.directory /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core，将该类指令终端执行

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• Flutter无法启动iOS Simulator

第一次运行时，点击open iOS Simulator后能正常启动iOS模拟器，并且可以选择模拟器运行。
后面再使用时怎么都无法选择ios模拟器

解决
终端运行flutter doctor发现出现报错

[!] Xcode - develop for iOS and macOS
    ✗ Xcode installation is incomplete; a full installation is necessary for iOS
      development.
      Download at: https://developer.apple.com/xcode/download/
      Or install Xcode via the App Store.
      Once installed, run:
        sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer
        sudo xcodebuild -runFirstLaunch

运行报错内容中的 两个sudo命令解决问题