重复条目：com / google / firebase / FirebaseApiNotAvailableException.class [英] Duplicate entry: com/google/firebase/FirebaseApiNotAvailableException.class

问题描述

我有一个使用React-Native和Google Play服务（分析，云消息，广告）构建的Android项目。我没有明确地使用Firebase。

尝试从8.4.0 => 9.2.0升级Play Services。

  buildscript {
依赖关系{
 classpath'com.google.gms： google-services：3.0.0'
  

...

 依赖项{
 compile'c​​om.google.android.gms：play-services-analytics：9.2.1'
 compile'c​​om.google。 android.gms：play-services-ads：9.2.1'
 compile'c​​om.google.android.gms：play-services-base：9.2.1'
 compile'c​​om.google.android。 gms：play-services-gcm：9.2.1'
  

请注意， Firebase的任何地方。

自升级以来，我收到以下Gradle生成错误：
$ b

com.android.build.api.transform.TransformException：java.util.zip.ZipException：重复条目：com / google / firebase / FirebaseApiNotAvailableException.class

我知道，Firebase捆绑在Google Play服务中（自9.0以来

但是我不能为了我的生活找出是什么原因造成的。

解决方案

好的 - 罪魁祸首是React-Native。 / p>

提示是Gradle控制台上出现的这条不起眼的线条：

google -services插件无法检测任何版本的
com.google.android.gms或com.google.firebase，默认版本：9.0.0
将被使用。

修正？通过将以下行添加到build.gradle中，强制RN库项目链接到正确的Firebase版本：

  compile' com.google.firebase：firebase-core：9.2.1'
  

然后：

作为一个侧面说明，这个问题引发了我深入了解依赖关系管理。我已经写了一篇有关解决共同依赖问题的广泛文章。

I have an Android project built with React-Native and employing Google Play Services (analytics, cloud messaging, ads). I'm not explicitly using Firebase anywhere.

Tried upgrading the Play Services from 8.4.0 => 9.2.0. Also upgraded the GPS classpath.

buildscript {
    dependencies {
        classpath 'com.google.gms:google-services:3.0.0'

...

dependencies {
    compile 'com.google.android.gms:play-services-analytics:9.2.1'
    compile 'com.google.android.gms:play-services-ads:9.2.1'
    compile 'com.google.android.gms:play-services-base:9.2.1'
    compile 'com.google.android.gms:play-services-gcm:9.2.1'

Notice that I'm not explicitly depending on Firebase anywhere.

Ever since the upgrade I'm getting the following Gradle build error:

com.android.build.api.transform.TransformException: java.util.zip.ZipException: duplicate entry: com/google/firebase/FirebaseApiNotAvailableException.class

I know that Firebase comes bundled within the Google Play Services (since 9.0), so I figured something else is compiling and linking with an older version. So looking at the dependency insight (gradle -q dependencyInsight --configuration compile --dependency firebase) I've noticed that firebase-common 9.0.0 is being added on top of 9.2.1:

But I can't for the life of me find out what causes this.

解决方案

Well - the culprit is React-Native.

The hint was this obscure line that appears on the Gradle console:

google-services plugin could not detect any version for com.google.android.gms or com.google.firebase, default version: 9.0.0 will be used.

The fix? Force the RN library project to link with the correct Firebase version, by adding the following line to its build.gradle:

compile 'com.google.firebase:firebase-core:9.2.1'

And thus:

As a side-note, this issue has triggered me to look deeper into gradle dependency management. I've written an extensive post about resolving common dependency issues.

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