java.lang.NoClassDefFoundError：无法解决以下问题：Lcom / Google / Android / gms / common / API / API $ zzf; [英] java.lang.NoClassDefFoundError: Failed resolution of: Lcom/Google/Android/gms/common/API/API$zzf;

问题描述

java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/common/api/Api$zzf;

我在运行时遇到了错误。

I am getting above error at run time.

我将multiDexEnabled设置为true，但是仍然出现错误。

I set multiDexEnabled true, but I'm still getting the error.

我无法找到背后的原因。这个
问题没有正确的解决方案。

I am not able to find reason behind it. There is no correct solution for this question.

推荐答案

我在项目中添加Firebase身份验证时也遇到了这个问题，问题是我没有在其中添加google auth作为依赖项build.gradle。在依赖项下添加以下内容即可解决问题

I have also faced this issue while adding firebase auth in my project and issue was I have not added google auth as dependency in build.gradle. Adding below dependencies solved the problem

implementation 'com.google.android.gms:play-services-auth:16.0.0'
implementation 'com.google.firebase:firebase-auth:16.0.3'

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