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Flutter初體驗(yàn)（一）——Mac 安裝配置

如果你在國(guó)內(nèi)使用 Flutter，那么你可能需要找一個(gè)與官方同步的可信的鏡像站點(diǎn)，幫助你的 Flutter 命令行工具到該鏡像站點(diǎn)下載其所需的資源。
你需要為此設(shè)置兩個(gè)環(huán)境變量：“PUB_HOSTED_URL”和“FLUTTER_STORAGE_BASE_URL”，然后再運(yùn)行 Flutter 命令行工具，查看設(shè)置教程。

上海交通大學(xué) Linux 用戶組

FLUTTER_STORAGE_BASE_URL: https://mirrors.sjtug.sjtu.edu.cn
PUB_HOSTED_URL: https://dart-pub.mirrors.sjtug.sjtu.edu.cn

Flutter 社區(qū)

FLUTTER_STORAGE_BASE_URL: https://storage.flutter-io.cn
PUB_HOSTED_URL: https://pub.flutter-io.cn

export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn

注意：我們無(wú)法保證這些鏡像網(wǎng)站得以長(zhǎng)期維護(hù)和運(yùn)行，請(qǐng)慎重選擇一些可信的鏡像網(wǎng)站。

下載flutter stable：https://flutter.dev/docs/get-started/install/macos

• 配置永久環(huán)境變量：
  1、將下載的flutter包放在/Users/yuanzhiying/Library/下
  2、執(zhí)行命令：

open ~/.bash_profile

如果不存在.bash_profile，則執(zhí)行cd ~和touch .bash_profile來(lái)創(chuàng)建一個(gè).bash_profile
3、打開(kāi)文件，在里面添加上：

# flutter
export PUB_HOSTED_URL=https://pub.flutter-io.cn
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
export PATH=${PATH}:/Users/yuanzhiying/Library/flutter/bin

4、執(zhí)行

source ~/.bash_profile

5、驗(yàn)證

echo $PATH

6、執(zhí)行flutter doctor，返回結(jié)果

Doctor summary (to see all details, run flutter doctor -v):
[?] Flutter (Channel stable, v1.0.0, on Mac OS X 10.14.2 18C54, locale
    zh-Hans-CN)
[?] 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.io/setup/#android-setup for detailed
      instructions).
      If 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.

[!] iOS toolchain - develop for iOS devices (Xcode 10.1)
    ? 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 with Brew:
        brew install ios-deploy
[!] Android Studio (not installed)
[?] Connected device (1 available)

! Doctor found issues in 3 categories.

按照上面的提示安裝不合要求的項(xiàng)目。
7、 iOS toolchain按照命令即可安裝成功。
8、安裝android-studio
下載android-studio：
https://developer.android.com/studio/index.html (最新版)
dmg包雙擊安裝即可
9、打開(kāi)android studio，按提示安裝Android sdk

WX20181222-001326@2x.png

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WX20181224-102236@2x.png

其他問(wèn)題解決辦法：
一、Android license status unknown

[!] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    ? Android license status unknown.

執(zhí)行：

flutter doctor --android-licenses

結(jié)果：

yuanzhiying:~ yuanzhiying$ flutter doctor --android-licenses
Warning: File /Users/yuanzhiying/.android/repositories.cfg could not be loaded. 
All SDK package licenses accepted.======] 100% Computing updates...  

yuanzhiying:~ yuanzhiying$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[?] Flutter (Channel stable, v1.0.0, on Mac OS X 10.14.2 18C54, locale zh-Hans-CN)
[?] Android toolchain - develop for Android devices (Android SDK 28.0.3)
[?] iOS toolchain - develop for iOS devices (Xcode 10.1)
[?] Android Studio (version 3.3)
[?] IntelliJ IDEA Ultimate Edition (version 2018.1.4)
[?] Connected device (2 available)

? No issues found!