问题
when I run flutter doctor, it shows me the following errors:
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)
回答1:
You need to download
1- Android SDK version 28
Android Studio -> SDK Manager -> SDK Platforms tab -> Select Android 9.0 Pie and press ok to download it
2- Android BuildTools version 28.0.3
Android Studio -> SDK Manager -> SDK Tools tab -> Select Show Package Details -> Under Android SDK Build-Tools section select 28.0.3 and press ok to download it
3- then Create and run Project
4- If the problem is still present, add
C:\Program Files\Git\bin\git.exe;C:\Program Files\Git\cmd;C:\Windows\System32
to your PATH variable
Do not create new variable for git but add them as I did one after another separating them by ;
回答2:
In Android Studio (v4.0.1) initial launch dialog, under Configure, select SDK Manager.
Select tab "SDK Tools". Check the "Show Package Details" and then check "28.0.3", and click "Apply".
来源：https://stackoverflow.com/questions/55221029/i-cannot-run-my-flutter-app-it-says-flutter-requires-android-sdk-28-and-i-have