android - 如何修复 Flutter AndroidX 不兼容问题？

Question

刚刚导入了webview_flutter插件，发现这个插件已经和我的flutter环境不兼容了。然后使用 Android Studio 我使用“迁移到 AndroidX”选项迁移我的 AndroidX 环境。

我想使用 webview_flutter 插件来查看页面。感谢帮助。

这是错误信息

Launching lib/main.dart on Andromax B26D2H in debug mode...
D8: Program type already present: android.support.v4.media.MediaBrowserCompat$ItemCallback

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: /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/22.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/105.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/148.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/133.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/72.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/128.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/79.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/88.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/110.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/67.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/120.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/91.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/102.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/6.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/118.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/5.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/52.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/58.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/43.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/127.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/142.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/151.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/19.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/34.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/46.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/63.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/107.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/9.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/31.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/15.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/115.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/70.jar, /Users/tio/Documents/Development/firecek_2019/build/app/intermediates/transforms/dexBuilder/debug/62.jar,
  Learn how to resolve the issue at https://developer.android.com/studio/build/dependencies#duplicate_classes.
  Program type already present: android.support.v4.media.MediaBrowserCompat$ItemCallback

• 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 4m 59s*******************************************************************************************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.

---

Gradle 任务 assembleDebug 失败，退出代码为 1
退出(信号项)

Answer 1

感谢您的建议，

我已经通过执行以下步骤修复了它:1.尝试添加这一行在你的项目文件夹> android > app > build.gradle中，添加以下行

multiDexEnabled true

在默认配置中

1. 然后升级android/build.gradle文件中的gradle依赖:classpath 'com.android.tools.build:gradle:3.3.1'(之前是3.2.1版本)

2. 运行 flutter clean 并重建您的项目