我做了什么：

>安装颤振
>安装Android Studio,以及包括Dart插件的Flutter插件
>在命令行中颤动运行正常,所有五个测试都通过了. (见下文)

[✓] Flutter (on Mac OS X 10.13.3 17D47,locale en-US,channel dev)
• Flutter version 0.0.22 at /Users/katelyn/flutter
• Framework revision 3001b3307d (7 days ago),2018-01-30 11:37:15 -0800
• Engine revision 8f2d72b183
• Tools Dart version 2.0.0-dev.16.0
• Engine Dart version 2.0.0-edge.7af4db0ea091dddca6b2da851e6dda8d7f9467e8

[✓] Android toolchain – develop for Android devices (Android SDK 27.0.3)
• Android SDK at /Users/katelyn/Library/Android/sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-27,build-tools 27.0.3
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)

[✓] iOS toolchain – develop for iOS devices (Xcode 9.2)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 9.2,Build version 9C40b
• ios-deploy 1.9.2
• CocoaPods version 1.4.0

[✓] Android Studio (version 3.0)
• Android Studio at /Applications/Android Studio.app/Contents
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)

[✓] Connected devices
• Android SDK built for x86 • emulator-5554 • android-x86 • Android 7.1.1 (API 25) (emulator)

上周,我可以通过命令行运行他们的示例(在该目录中),

flutter run

但现在我用Gradle显示了一些错误.

Launching lib/main.dart on Android SDK built for x86 in debug mode…
Initializing gradle… 0.7s
Resolving dependencies…
* Error running Gradle:
Exit code 1 from: /Users/katelyn/AndroidStudioProjects/flutter/examples/flutter_gallery/android/gradlew app:properties:

FAILURE: Build Failed with an exception.

• Where:
  Build file ‘/Users/katelyn/AndroidStudioProjects/flutter/examples/flutter_gallery/android/app/build.gradle’ line: 20

• What went wrong:
  A problem occurred evaluating project ‘:app’.
  3

• Try:
  Run with –stacktrace option to get the stack trace. Run with –info or –debug option to get more log output.

• Get more help at 07001

BUILD Failed in 0s

Please review your Gradle project setup in the android/ folder.

提前抱歉,我没有足够的声誉上传照片.