Question

我正在开发一款Flutter应用程序。

我发现了一个扑扑的样本项目，它很民间。但是该项目...构建失败，并显示以下日志消息。

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:preDebugBuild'.
> Android dependency 'androidx.core:core' has different version for the compile (1.0.0) and runtime (1.0.1) classpath. You should manually set the same version via DependencyResolution

* 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 0s
*******************************************************************************************
The Gradle failure may have been because of AndroidX incompatibilities in this Flutter app.
See https://flutter.dev/docs/development/packages-and-plugins/androidx-compatibility for more information on the problem and how to fix it.
*******************************************************************************************
Finished with error: Gradle task assembleDebug failed with exit code 1

该项目并不特殊。 android部分，没有其他修改。与“新开发项目”完全相同。

我尝试了一些事情：

迁移到AndroidX

这失败，并弹出错误。我尝试使用“重构>迁移到android x”进行迁移，但显示错误弹出窗口。对我说的错误弹出窗口至少使用compilesdkversion 28。但是我已经使用28 ..该怎么办？......

将gradle版本从3.2.1更改为3.3.2。

但是构建失败并显示了不同的日志

Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
D8: Program type already present: android.support.v4.app.INotificationSideChannel

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.
> com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: 
  Learn how to resolve the issue at https://developer.android.com/studio/build/dependencies#duplicate_classes.
  Program type already present: android.support.v4.app.INotificationSideChannel

我不知道该怎么办...

这让我很累... 我只想编码...

Answer 1

我通过以下链接解决了此问题：https://flutter.dev/docs/development/packages-and-plugins/androidx-compatibility

有2个迁移指南。

推荐
不推荐

就我而言，“推荐”解决方案不起作用...

但是，“不推荐”解决方案有效...

...

这不容易...

Answer 2

我尝试了这两行代码 flutter clean然后 flutter run

Flutter构建因D8而失败：程序类型已存在

2 个答案: