✗ Flutter plugin not installed; this adds Flutter specific functionality. // 没有在AS中添加 flutter 进行 flutter 的添加

command , 进入偏好设置 点击plugin search flutter 进行安装

Screen Shot 2018-11-23 at 4.13.24 PM.png

✗ Dart plugin not installed; this adds Dart specific functionality.

flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel dev, v0.11.2, on Mac OS X 10.14.1 18B75, locale en-CN)
[!] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    ! Some Android licenses not accepted.  To resolve this, run: flutter doctor
      --android-licenses
[✓] iOS toolchain - develop for iOS devices (Xcode 10.1)
[✓] Android Studio (version 3.2)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
[!] Connected device
    ! No devices available

! Doctor found issues in 2 categories.
yulekwoks-MacBook-Pro:~ yulekwok$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel dev, v0.11.2, on Mac OS X 10.14.1 18B75, locale en-CN)
[!] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    ! Some Android licenses not accepted.  To resolve this, run: flutter doctor
      --android-licenses
[✓] iOS toolchain - develop for iOS devices (Xcode 10.1)
[✓] Android Studio (version 3.2)
[!] Connected device
    ! No devices available

! Doctor found issues in 2 categories.

到此为止，恭喜您 flutter 已经OK！