问题描述 #

我的Android应用编译成功后启动崩溃，崩溃日志如下：

E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.bedo.imagestorage, PID: 31127 java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/common/internal/zzbq; at com.google.firebase.storage.FirebaseStorage.getInstance(Unknown Source) at com.example.bedo.imagestorage.MainActivity.onCreate(MainActivity.java:57) at android.app.Activity.performCreate(Activity.java:6100) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1109) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2510) at android.app.ActivityThread.access$1200(ActivityThread.java:163) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1371) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5595) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.common.internal.zzbq" on path: DexPathList[[zip file "/data/app/com.example.bedo.imagestorage-1/base.apk", zip file "/data/app/com.example.bedo.imagestorage-1/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.bedo.imagestorage-1/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.bedo.imagestorage-1/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.bedo.imagestorage-1/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.bedo.imagestorage-1/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.bedo.imagestorage-1/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.bedo.imagestorage-1/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.bedo.imagestorage-1/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.bedo.imagestorage-1/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.bedo.imagestorage-1/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.bedo.imagestorage-1/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/vendor/lib64, /system/lib64]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) at java.lang.ClassLoader.loadClass(ClassLoader.java:511) at java.lang.ClassLoader.loadClass(ClassLoader.java:469) at com.google.firebase.storage.FirebaseStorage.getInstance(Unknown Source) at com.example.bedo.imagestorage.MainActivity.onCreate(MainActivity.java:57) at android.app.Activity.performCreate(Activity.java:6100) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1109) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2510) at android.app.ActivityThread.access$1200(ActivityThread.java:163) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1371) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5595) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) Suppressed: java.lang.ClassNotFoundException: com.google.android.gms.common.internal.zzbq at java.lang.Class.classForName(Native Method) at java.lang.BootClassLoader.findClass(ClassLoader.java:781) at java.lang.BootClassLoader.loadClass(ClassLoader.java:841) at java.lang.ClassLoader.loadClass(ClassLoader.java:504) ... 16 more Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available I/Process: Sending signal. PID: 31127 SIG: 9 Application terminated.

问题分析 #

这个错误的核心是NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/common/internal/zzbq;，说明应用在运行时找不到Google Play Services的核心类，通常是由以下原因导致：

• Firebase Storage库和Google Play Services相关库的版本不匹配
• 依赖没有正确同步或缓存问题
• Multidex配置不正确（针对minSdk<21的应用）

解决方案 #

1. 统一Firebase和Google Play Services依赖版本

Firebase库和Google Play Services库必须使用兼容的版本，最好统一所有相关依赖的版本号。打开你的Module级build.gradle文件，确保所有com.google.firebase和com.google.android.gms开头的依赖版本一致：

// 示例：使用统一的稳定版本（请根据Firebase官方文档调整为最新兼容版本）
implementation 'com.google.firebase:firebase-storage:20.0.0'
implementation 'com.google.android.gms:play-services-base:20.0.0'

2. 确保Google Services插件正确配置

在项目级build.gradle中，确认已经引入了google-services插件：

buildscript {
    repositories {
        google()
        // 其他仓库...
    }
    dependencies {
        // 确保使用最新稳定版的google-services插件
        classpath 'com.google.gms:google-services:4.3.15'
    }
}

然后在Module级build.gradle的末尾添加插件引用：

apply plugin: 'com.google.gms.google-services'

3. 清理并重建项目

Android Studio的缓存有时会导致依赖加载异常，执行以下步骤：

• 点击菜单栏 Build > Clean Project
• 等待清理完成后，点击 Build > Rebuild Project

4. 检查Multidex配置（如果适用）

如果你的应用minSdkVersion低于21，并且方法数超过65536，需要正确配置Multidex：
在Module级build.gradle中开启Multidex：

android {
    defaultConfig {
        multiDexEnabled true
    }
}

dependencies {
    implementation 'com.android.support:multidex:1.0.3'
}

然后修改你的Application类：

public class MyApplication extends MultiDexApplication {
    // ... 其他代码
}

如果无法修改Application类，在attachBaseContext方法中手动初始化Multidex：

@Override
protected void attachBaseContext(Context base) {
    super.attachBaseContext(base);
    MultiDex.install(this);
}

内容的提问来源于stack exchange，提问作者Abdallah Elshafei