dart - 我无法运行我的 flutter 应用程序。它说 Flutter 需要 Android SDK 28，而我有 sdk 28

Question

当我运行 flutter doctor 时，它显示以下错误:

Running flutter doctor...
Doctor summary (to see all details, run flutter doctor -v):
[?] Flutter (Channel stable, v1.2.1, on Microsoft Windows [Version 10.0.17134.112], locale en-US)
[!] Android toolchain - develop for Android devices (Android SDK version 27.0.3)
    X Flutter requires Android SDK 28 and the Android BuildTools 28.0.3
      To update using sdkmanager, run:
        D:/Tools/sdk\tools\bin\sdkmanager "platforms;android-28" "build-tools;28.0.3"
      or visit https://flutter.io/setup/#android-setup for detailed instructions.
    X Android license status unknown.
[?] Android Studio (version 3.3)
[!] IntelliJ IDEA Ultimate Edition (version 2017.1)
    X Flutter plugin not installed; this adds Flutter specific functionality.
    X Dart plugin not installed; this adds Dart specific functionality.
[?] VS Code (version 1.26.1)
[?] Connected device (1 available)

Answer 1

需要下载

1- Android SDK 版本 28

Android Studio -> SDK Manager -> SDK Platforms 选项卡 -> 选择 Android 9.0 Pie 然后按 ok 下载

2- Android BuildTools 版本 28.0.3

Android Studio -> SDK Manager -> SDK Tools 选项卡 -> 选择 Show Package Details -> 在 Android SDK Build-Tools 部分选择 28.0.3 并按确定下载它

3- 然后创建并运行项目

4-如果问题仍然存在，添加

C:\Program Files\Git\bin\git.exe;C:\Program Files\Git\cmd;C:\Windows\System32 

到您的 PATH 变量

不要为 git 创建新变量，而是像我那样一个接一个地添加它们，用 ; 分隔它们