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android - Flutterfire firebase_auth 不再起作用

问题描述

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）。使用颤振我正在使用firebase_auth。我停止了几周的开发，然后我的应用程序无法正常工作。我将问题缩小到我的 firebase_auth 不起作用。为了测试这一点，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看看它是否可以工作。它做了。一旦我在 pubspec.yaml 文件中添加了 firebase_auth 行，我的应用程序甚至都不会构建。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

标签： androidfirebasefirebase-authenticationfluttergoogle-cloud-firestore

解决方案

这个问题看起来更多与 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 < 21

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