Java.lang.NoClassDefFoundError:解析失败：Lcom/google/firebase/FirebaseApp

这是一个本地项目。在Android Studio Emulator中成功构建后，我出现了一个错误：

java.lang.NoClassDefFoundError:解析失败： Lcom/google/firebase/FirebaseApp

我的文件：

package.json:

...
"react-native": "^0.55.3",
"react-native-camera": "1.1.2",
"react-native-check-box": "^2.1.0",
"react-native-extended-stylesheet": "^0.8.1",
"react-native-firebase": "^4.2.0",
"react-native-geocoder": "^0.5.0",
"react-native-git-upgrade": "^0.2.7",
"react-native-htmlview": "^0.12.1",
"react-native-image-picker": "^0.26.10",
"react-native-linear-gradient": "^2.4.0",
"react-native-local-storage": "^1.5.2",
"react-native-maps": "^0.21.0",
"react-native-modal": "^5.4.0",
"react-native-modal-dropdown": "^0.6.1",
"react-native-read-more-text": "^1.0.0",
"react-native-router-flux": "^4.0.0-beta.27",
"react-native-svg-image": "^2.0.1",
"react-native-text-input-mask": "^0.7.0",
...

...    
android {
    compileSdkVersion 27
    buildToolsVersion "27.0.1"

    defaultConfig {
        applicationId "com.something.anything"
        minSdkVersion 16
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
        ndk {
            abiFilters "armeabi-v7a", "x86"
        }
        multiDexEnabled true
    }
    signingConfigs {
        release {
            if (project.hasProperty('MYAPP_RELEASE_STORE_FILE')) {
                storeFile file(MYAPP_RELEASE_STORE_FILE)
                storePassword MYAPP_RELEASE_STORE_PASSWORD
                keyAlias MYAPP_RELEASE_KEY_ALIAS
                keyPassword MYAPP_RELEASE_KEY_PASSWORD
            }
        }
    }
    splits {
        abi {
            reset()
            enable enableSeparateBuildPerCPUArchitecture
            universalApk false  // If true, also generate a universal APK
            include "armeabi-v7a", "x86"
        }
    }
    buildTypes {
        release {
            signingConfig signingConfigs.release
            minifyEnabled enableProguardInReleaseBuilds
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
        }
    }
    // applicationVariants are e.g. debug, release
    applicationVariants.all { variant ->
        variant.outputs.each { output ->
            // For each separate APK per architecture, set a unique version code as described here:
            // http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
            def versionCodes = ["armeabi-v7a":1, "x86":2]
            def abi = output.getFilter(OutputFile.ABI)
            if (abi != null) {  // null for the universal-debug, universal-release variants
                output.versionCodeOverride =
                        versionCodes.get(abi) * 1048576 + defaultConfig.versionCode
            }
        }
    }
}

dependencies {
    compile(project(':react-native-firebase')) {
        transitive = false
    }
    compile project(':react-native-geocoder')
    compile(project(':react-native-maps')) {
      exclude group: 'com.google.android.gms', module: 'play-services-base'
      exclude group: 'com.google.android.gms', module: 'play-services-maps'
      exclude group: 'com.google.android.gms', module: 'play-services-location'
    }

    compile 'com.google.android.gms:play-services-base:15.+'
    compile 'com.google.android.gms:play-services-maps:15.+'
    compile 'com.google.android.gms:play-services-location:15.+'
    compile (project(':react-native-camera')) {
    exclude group: "com.google.android.gms"
    compile 'com.android.support:exifinterface:25.+'
    compile ('com.google.android.gms:play-services-vision:12.0.1') {
        force = true
        }
    }
    compile project(':react-native-text-input-mask')
    compile project(':react-native-linear-gradient')
    compile project(':react-native-image-picker')
    compile fileTree(dir: "libs", include: ["*.jar"])
    compile "com.android.support:appcompat-v7:23.0.1"
    compile "com.facebook.react:react-native:+"  // From node_modules
}

allprojects {
    repositories {
        maven { url "https://jitpack.io" }
        maven { url "https://maven.google.com" }
    }
}

// Run this once to be able to run the application with BUCK
// puts all compile dependencies into folder libs for BUCK to use
task copyDownloadableDepsToLibs(type: Copy) {
    from configurations.compile
    into 'libs'
}

android/app/build.gradle:

...
"react-native": "^0.55.3",
"react-native-camera": "1.1.2",
"react-native-check-box": "^2.1.0",
"react-native-extended-stylesheet": "^0.8.1",
"react-native-firebase": "^4.2.0",
"react-native-geocoder": "^0.5.0",
"react-native-git-upgrade": "^0.2.7",
"react-native-htmlview": "^0.12.1",
"react-native-image-picker": "^0.26.10",
"react-native-linear-gradient": "^2.4.0",
"react-native-local-storage": "^1.5.2",
"react-native-maps": "^0.21.0",
"react-native-modal": "^5.4.0",
"react-native-modal-dropdown": "^0.6.1",
"react-native-read-more-text": "^1.0.0",
"react-native-router-flux": "^4.0.0-beta.27",
"react-native-svg-image": "^2.0.1",
"react-native-text-input-mask": "^0.7.0",
...

...    
android {
    compileSdkVersion 27
    buildToolsVersion "27.0.1"

    defaultConfig {
        applicationId "com.something.anything"
        minSdkVersion 16
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
        ndk {
            abiFilters "armeabi-v7a", "x86"
        }
        multiDexEnabled true
    }
    signingConfigs {
        release {
            if (project.hasProperty('MYAPP_RELEASE_STORE_FILE')) {
                storeFile file(MYAPP_RELEASE_STORE_FILE)
                storePassword MYAPP_RELEASE_STORE_PASSWORD
                keyAlias MYAPP_RELEASE_KEY_ALIAS
                keyPassword MYAPP_RELEASE_KEY_PASSWORD
            }
        }
    }
    splits {
        abi {
            reset()
            enable enableSeparateBuildPerCPUArchitecture
            universalApk false  // If true, also generate a universal APK
            include "armeabi-v7a", "x86"
        }
    }
    buildTypes {
        release {
            signingConfig signingConfigs.release
            minifyEnabled enableProguardInReleaseBuilds
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
        }
    }
    // applicationVariants are e.g. debug, release
    applicationVariants.all { variant ->
        variant.outputs.each { output ->
            // For each separate APK per architecture, set a unique version code as described here:
            // http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
            def versionCodes = ["armeabi-v7a":1, "x86":2]
            def abi = output.getFilter(OutputFile.ABI)
            if (abi != null) {  // null for the universal-debug, universal-release variants
                output.versionCodeOverride =
                        versionCodes.get(abi) * 1048576 + defaultConfig.versionCode
            }
        }
    }
}

dependencies {
    compile(project(':react-native-firebase')) {
        transitive = false
    }
    compile project(':react-native-geocoder')
    compile(project(':react-native-maps')) {
      exclude group: 'com.google.android.gms', module: 'play-services-base'
      exclude group: 'com.google.android.gms', module: 'play-services-maps'
      exclude group: 'com.google.android.gms', module: 'play-services-location'
    }

    compile 'com.google.android.gms:play-services-base:15.+'
    compile 'com.google.android.gms:play-services-maps:15.+'
    compile 'com.google.android.gms:play-services-location:15.+'
    compile (project(':react-native-camera')) {
    exclude group: "com.google.android.gms"
    compile 'com.android.support:exifinterface:25.+'
    compile ('com.google.android.gms:play-services-vision:12.0.1') {
        force = true
        }
    }
    compile project(':react-native-text-input-mask')
    compile project(':react-native-linear-gradient')
    compile project(':react-native-image-picker')
    compile fileTree(dir: "libs", include: ["*.jar"])
    compile "com.android.support:appcompat-v7:23.0.1"
    compile "com.facebook.react:react-native:+"  // From node_modules
}

allprojects {
    repositories {
        maven { url "https://jitpack.io" }
        maven { url "https://maven.google.com" }
    }
}

// Run this once to be able to run the application with BUCK
// puts all compile dependencies into folder libs for BUCK to use
task copyDownloadableDepsToLibs(type: Copy) {
    from configurations.compile
    into 'libs'
}

android/build.gradle

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

buildscript {
    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.0'

        // 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"
        }
    }
}

subprojects {
  project.configurations.all {
     resolutionStrategy.eachDependency { details ->
        if (details.requested.group == 'com.android.support'
              && !details.requested.name.contains('multidex')
        ) {
           details.useVersion "27.1.0"
        }
     }
  }
}

---

我尝试了很多解决方案，但没有任何效果。

面临同样的问题。然后我发现我错过了将Firebase与Android项目集成的一组重要说明：

以下是该文档中有助于我的案例的步骤摘要：

生成

googleservices.json

，并将其放入您的

android/app/

目录

将

classpath'com.google.gms:googleservices:4.1.0'

添加到根级别

build.gradle

config的

buildscript->dependencies

部分；将

google（）

添加到同一文件的

allprojects->repositories

部分

将

implementation'com.google.firebase:firebase核心：16.0.3'

添加到应用程序模块

build.gradle

文件的

依赖项部分；在同一文件的最底部添加
apply插件：“com.google.gms.google服务”

同步和重建。现在应该可以了

---

在app gradle文件中更改了最新的firebase消息传递google依赖项，并在同一版本中修改了其他依赖项。现在工作很好

---

在我的例子中，我忘记在MainApplication.java中注释数据库包

    @Override
    protected List<ReactPackage> getPackages() {
      return Arrays.<ReactPackage>asList(
        new MainReactPackage(),
            new AsyncStoragePackage(),
            new RNCameraPackage(),
            new VectorIconsPackage(),
            new RNGestureHandlerPackage(),
        new RNFirebasePackage(),
        // add/remove these packages as appropriate
        //new RNFirebaseAdMobPackage(),
        new RNFirebaseAnalyticsPackage(),
        //new RNFirebaseAuthPackage(),
        // new RNFirebaseRemoteConfigPackage(),
        new RNFirebaseCrashlyticsPackage(),
        // new RNFirebaseDatabasePackage(), <==== Comment this package
       // new RNFirebaseFirestorePackage(),
        // new RNFirebaseFunctionsPackage(),
        new RNFirebaseInstanceIdPackage(),
       // new RNFirebaseInvitesPackage(),
        new RNFirebaseLinksPackage(),
        new RNFirebaseMessagingPackage(),
        new RNFirebaseNotificationsPackage(),
        new RNFirebasePerformancePackage()
       // new RNFirebaseStoragePackage()
      );
    }

@覆盖
受保护的列表getPackages（）{
返回数组.asList(
新建MainReactPackage（），
新建AsyncStoragePackage（），
新的RNCameraPackage（），
新的VectorConsPackage（），
新RNGestureHandlerPackage（），
新的RNFirebasePackage（），
//根据需要添加/删除这些包
//新的RNFirebaseAdMobPackage（），
新的RNFirebaseAnalyticsPackage（），
//新的RNFirebaseAuthPackage（），
//新的RNFirebaseRemoteConfigPackage（），
新的RNFirebaseCrashlyticPackage（），
//新的RNFirebaseDatabasePackage（），我遇到了同样的问题。您必须在pakage.json文件中更改react本机firebase版本。我从这里找到了解决方案

在您的
android/app/build.gradle上
根据依赖项再添加一个实现：

...
dependencies {
    implementation "com.google.firebase:firebase-auth:17.0.0"
    ...
}

所涉及的依赖关系可能存在一些问题

就我而言，在应用程序级别
build.gradle

dependencies{
     implementation 'com.google.firebase:firebase-auth:17.0.0'
     implementation 'com.firebaseui:firebase-ui-database:6.0.2'
     ...
}

在gradle.properties文件中，尝试添加：：

android.enableJetifier = true
android.useAndroidX = true

如果您在Flatter中遇到此问题，请在android/app/build.gradle中添加此依赖项，然后运行main.dart。无需在ListView中添加任何类型的控制器。如果您在该页面上使用ListView。如果您使用Firebase，请在Dependencies中添加此依赖项

实现“com.google.firebase:firebase auth:19.3.0”
更新您的firebase库

例如，如果您的应用程序使用firebase auth，谷歌为其提供最新版本的文档，请将其粘贴到build.gradle

您的Firebase助手在Android Studio中添加的库通常比较旧。
使用相同版本的play service库。也不要在依赖项中使用+运算符。找到的版本为
服务库：15.+'
，
vision:12.0.1
@alex khanenya您找到解决方案了吗？我有相同的错误。Thanks@alex- Khannya，请考虑如果答案解决了问题，就表示答案已被接受。