Question

突然间，我无法构建一个本机应用程序。问题标题中提到的任务失败，并显示以下消息：

* What went wrong:
Execution failed for task ':app:transformClassesWithDexForDebug'.
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.dex.DexException: Multiple dex files define Lcom/google/android/gms/internal/zzmu;

我的android/build.gradle：

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
dependencies {
    classpath 'com.android.tools.build:gradle:2.1.2'
    classpath 'com.google.gms:google-services:3.0.0'

    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        mavenLocal()
        jcenter()
        maven {
        // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
        url "$rootDir/../node_modules/react-native/android"
        }
    }
}

来自android/app/build.gradle的依赖关系部分：

dependencies {
    compile project(':react-native-keychain')
    compile project(':react-native-fbsdk')
    compile project(':react-native-randombytes')
    compile project(':react-native-barcodescanner')
    compile project(':react-native-camera')
    compile project(':rn-splash-screen')
    compile project(':react-native-code-push')
    compile project(':react-native-vector-icons')
    compile fileTree(dir: "libs", include: ["*.jar"])
    compile "com.android.support:appcompat-v7:23.0.1"
    compile "com.facebook.react:react-native:+"  // From node_modules
    compile(project(":react-native-google-signin")){
      exclude group: "com.google.android.gms"
    }
    compile 'com.google.firebase:firebase-core:9.4.0'
    compile 'com.google.android.gms:play-services-auth:9.4.0'
    compile project(':react-native-vector-icons')
    compile project(':react-native-code-push')
    compile project(':react-native-onesignal')
}

我听说它是由于冲突而发生的（例如谷歌游戏服务宣布两次，或者在一个地方宣布为特定服务，在另一个地方宣布为整体）但无法弄清楚是什么问题是。这里有什么问题，我该如何解决？

Answer 1

我对Android的有限理解告诉我，您正在包含以某种方式共享方法名称的单独依赖项。我发现这些错误通常指向我的依赖关系树中的版本不匹配 - 在这种情况下，看起来您有多个项目，具体取决于com.google.android.gms:play-services-auth。

您听说过的冲突似乎有问题...... exclude group可能无法按您的意愿行事。

查看node_modules/react-native-google-signin/android/build.gradle内部，并根据项目play-services-auth中的play-services-auth比较app/build.gradle的版本。考虑到版本9.4.0的依赖关系列表点，您可以尝试设置react-native-google-signin依赖关系版本以匹配，反之亦然。

dependencies {
    compile "com.google.android.gms:play-services-auth:9.4.0"
    compile "com.facebook.react:react-native:+"
}

Answer 2

清理gradle然后重新构建。

cd android然后./gradlew clean

React native：app：transformClassesWithDexForDebug FAILED

2 个答案: