我正在尝试构建apk，但是失败了，几天前一切都正常，我尝试了所有可能找到的东西（虽然我是初学者）。我知道它与Gradle有关，我为此安装了openJDK 8（几天前与JDk配合正常）
我什至不能在设备上运行它。我试着把东西拍干净了
E:\flutter\bin\flutter.bat --no-color build apk
You are building a fat APK that includes binaries for android-arm, android-arm64, android-x64.
If you are deploying the app to the Play Store, it's recommended to use app bundles or split the APK to reduce the APK size.
To generate an app bundle, run:
flutter build appbundle --target-platform android-arm,android-arm64,android-x64
Learn more on: https://developer.android.com/guide/app-bundle
To split the APKs per ABI, run:
flutter build apk --target-platform android-arm,android-arm64,android-x64 --split-per-abi
Learn more on: https://developer.android.com/studio/build/configure-apk-splits#configure-abi-split
Running Gradle task 'assembleRelease'...
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring root project 'android'.
> Could not resolve all artifacts for configuration ':classpath'.
> Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.50.
Required by:
project :
> Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.50.
> Could not get resource 'https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.3.50/kotlin-gradle-plugin-1.3.50.pom'.
> Could not GET 'https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.3.50/kotlin-gradle-plugin-1.3.50.pom'.
> Connect to dl.google.com:443 [dl.google.com/172.217.24.46] failed: Connection timed out: connect
> Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.50.
> Could not get resource 'https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-gradle-plugin/1.3.50/kotlin-gradle-plugin-1.3.50.pom'.
> Could not GET 'https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-gradle-plugin/1.3.50/kotlin-gradle-plugin-1.3.50.pom'.
> Connect to jcenter.bintray.com:443 [jcenter.bintray.com/54.148.239.199, jcenter.bintray.com/35.161.162.245, jcenter.bintray.com/52.41.115.189, jcenter.bintray.com/52.88.32.158] failed: Connection timed out: connect
* 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 5m 50s
Running Gradle task 'assembleRelease'... 352.4s (!)
Gradle task assembleRelease failed with exit code 1
Process finished with exit code 1
颤抖的医生-v结果
[√] Flutter (Channel beta, 1.19.0-4.1.pre, on Microsoft Windows [Version 6.1.7601], locale en-US)
• Flutter version 1.19.0-4.1.pre at E:\flutter
• Framework revision f994b76974 (11 days ago), 2020-06-09 15:53:13 -0700
• Engine revision 9a28c3bcf4
• Dart version 2.9.0 (build 2.9.0-14.1.beta)
[√] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
• Android SDK at C:\Users\lenovo\AppData\Local\Android\sdk
• Platform android-29, build-tools 29.0.3
• Java binary at: E:\New folder (2)\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
[√] Android Studio (version 3.6)
• Android Studio at E:\New folder (2)
• Flutter plugin version 45.1.1
• Dart plugin version 192.8052
• Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)
[!] VS Code (version 1.45.1)
• VS Code at C:\Users\lenovo\AppData\Local\Programs\Microsoft VS Code
X Flutter extension not installed; install from
https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[√] Connected device (2 available)
• Web Server • web-server • web-javascript • Flutter Tools
• Chrome • chrome • web-javascript • Google Chrome 83.0.4103.106
! Doctor found issues in 1 category.
我还应该提到我在运行“ gralew build”时也遇到了问题，它也显示了一个错误