android - flutter error Could not determine the dependencies of task ':app:compileDebugJavaWithJavac'

Question

I just cerate a empty application ,then when I run it on emulator ，error happend.

this error only arise when I run on android emulator , but ios works fine.

now I'm in the flutter beta channel.

so If anyone has any ideas , please let me know. thanks

here is the error log

Launching lib/main.dart on AOSP on IA Emulator in debug mode...
Running Gradle task 'assembleDebug'...

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':app:compileDebugJavaWithJavac'.
> Could not resolve all task dependencies for configuration ':app:debugCompileClasspath'.
   > Could not resolve io.flutter:flutter_embedding_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
     Required by:
         project :app
      > Could not resolve io.flutter:flutter_embedding_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
         > Could not get resource 'http://download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/flutter_embedding_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
            > Could not GET 'http://download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/flutter_embedding_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
               > Connection reset
      > Could not resolve io.flutter:flutter_embedding_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
         > Could not get resource 'http://download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/flutter_embedding_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
            > Could not GET 'http://download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/flutter_embedding_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
               > Connection reset
      > Could not resolve io.flutter:flutter_embedding_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
         > Could not get resource 'http://download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/flutter_embedding_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
            > Could not GET 'http://download.flutter.io/io/flutter/flutter_embedding_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/flutter_embedding_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
               > Connection reset
   > Could not resolve io.flutter:x86_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
     Required by:
         project :app
      > Could not resolve io.flutter:x86_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
         > Could not get resource 'http://download.flutter.io/io/flutter/x86_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
            > Could not GET 'http://download.flutter.io/io/flutter/x86_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
               > Connection reset
      > Could not resolve io.flutter:x86_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
         > Could not get resource 'http://download.flutter.io/io/flutter/x86_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
            > Could not GET 'http://download.flutter.io/io/flutter/x86_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
               > Connection reset
      > Could not resolve io.flutter:x86_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
         > Could not get resource 'http://download.flutter.io/io/flutter/x86_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
            > Could not GET 'http://download.flutter.io/io/flutter/x86_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
               > Connection reset
   > Could not resolve io.flutter:x86_64_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
     Required by:
         project :app
      > Could not resolve io.flutter:x86_64_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
         > Could not get resource 'http://download.flutter.io/io/flutter/x86_64_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_64_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
            > Could not GET 'http://download.flutter.io/io/flutter/x86_64_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_64_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
               > Connection reset
      > Could not resolve io.flutter:x86_64_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
         > Could not get resource 'http://download.flutter.io/io/flutter/x86_64_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_64_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
            > Could not GET 'http://download.flutter.io/io/flutter/x86_64_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_64_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
               > Connection reset
      > Could not resolve io.flutter:x86_64_debug:1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.
         > Could not get resource 'http://download.flutter.io/io/flutter/x86_64_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_64_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
            > Could not GET 'http://download.flutter.io/io/flutter/x86_64_debug/1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695/x86_64_debug-1.0.0-2994f7e1e682039464cb25e31a78b86a3c59b695.pom'.
               > Connection reset

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 4s
Finished with error: Gradle task assembleDebug failed with exit code 1

and my flutter doctor show as below

?  flutter_demo flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[?] Flutter (Channel beta, v1.12.13+hotfix.6, on Mac OS X 10.15.2 19C57, locale zh-Hans-CN)
[?] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[?] Xcode - develop for iOS and macOS (Xcode 11.3)
[?] Android Studio (version 3.5)
[?] VS Code (version 1.41.1)
[?] Connected device (1 available)

Answer 1

Run Flutter Doctor, if the section who says "android licenses" have a exclamation point and warning color, run flutter doctor --android-licenses. Just accept all and will be happy. It work to me.