我正在使用 flutter 和 flutterfire 构建一个应用程序(这允许我使用 flutter 和 firebase)。对于 flutterfire，我正在使用 firebase_auth .我停止了几周的开发，然后回到我的应用程序无法正常工作。我将问题缩小为我的 firebase_auth 不工作。为了对此进行测试，我在 Android Studios 上创建了一个全新的 firebase 应用程序并尝试将其连接到 flutterfire。我做了所有必要的步骤来做到这一点，并决定首先测试 cloud_firestore看看它是否会工作。它做了。一旦我在我的 pubspec.yaml 文件中添加了 firebase_auth 行，我的应用程序甚至都无法构建。我得到的错误如下。我也测试了以前版本的 flutter_fire。
D8: Cannot fit requested classes in a single dex file. Try supplying a
main-dex list.
methods: 65968 > 65536
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/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/5.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/6.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/7.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/8.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/9.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/303.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/304.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/305.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/306.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/307.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/308.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/309.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/310.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/311.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/312.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/313.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/314.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/315.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/316.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/317.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/318.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/319.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/320.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/321.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/322.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/323.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/324.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/325.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/326.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/327.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/328.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/329.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/330.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/331.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/332.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/333.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/334.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/335.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/336.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/337.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/338.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/339.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/340.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/341.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/342.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/343.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/384.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/390.jar, /Users/nolan/Documents/development/lp_2/lp_2/build/app/intermediates/transforms/dexBuilder/debug/396.jar
The number of method references in a .dex file cannot exceed 64K.
Learn how to resolve this issue at
https://developer.android.com/tools/building/multidex.html
* 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 2s
Finished with error: Gradle build failed: 1
最佳答案
该问题看起来更与 Android 相关，而不是 iOS 或 Flutter。 如果您的 minSdkVersion 设置为 21 或更高，您只需在模块级 build.gradle 文件中将 multiDexEnabled 设置为 true，如下所示:
android {
defaultConfig {
...
minSdkVersion 21
targetSdkVersion 26
multiDexEnabled true
}
...
}
更多信息:https://developer.android.com/studio/build/multidex特别是如果 minSdkVersion <>
关于android - Flutterfire firebase_auth 不再有效，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52250231/
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