java.lang.NoClassDefFoundError：com/xxx/music/ads/AudioAdManager for Inner project class

Question

我得到了一個類的NoClassDefFoundError，它是我的Android項目的一部分，而不是第三方庫。 這是錯誤：

java.lang.NoClassDefFoundError: com/xxx/music/ads/AudioAdManager....... 
Caused by: 
java.lang.ClassNotFoundException: Didn't find class "com.xxx.music.ads.AudioAdManager" 

的AudioAdManager方法是從com.xxx.music.player.PlayerService.triggerSomthing()

public class AudioAdManager{ 
    static AudioAdManager instance; 

    public AudioAdManager(){ 

    } 

    public void doSomething(){ 
     /// 
    } 

    public static AudioAdManager getInstance(){ 
     if(instance == null){ 
      instance = new AudioAdManager(); 
     } 

     return instance; 
    } 
} 



public class PlaybackService{ 
    static PlaybackService instance; 

    public PlaybackService(){ 

    } 

    public void triggerSomthing(){ 
     /// do some other tasks 
     AudioAdManager.getInstance().doSomething(); 
    } 

    public static PlaybackService getInstance(){ 
     if(instance == null){ 
      instance = new PlaybackService(); 
     } 

     return instance; 
    } 
} 

稱爲這是我的應用程序/文件的build.gradle

apply plugin: 'com.android.application' 
apply plugin: 'android-apt' 
apply plugin: 'io.fabric' 


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

buildscript { 
    repositories { 
     maven { url 'https://maven.fabric.io/public' } 
    } 

    dependencies { 
     classpath 'io.fabric.tools:gradle:1.+' 
    } 
} 
repositories { 
    maven { url 'https://maven.fabric.io/public' } 
} 

android { 
    compileSdkVersion 23 
    buildToolsVersion "23.0.0" 

    defaultConfig { 
     applicationId "com.xxx" 
     minSdkVersion 14 
     targetSdkVersion 23 
     versionCode 1 
     versionName "1.0" 
     multiDexEnabled true 
    } 
    buildTypes { 
     debug{ 
      multiDexKeepFile file("multidex.txt") 
      multiDexKeepProguard file("multidex.keep") 
     } 
     release { 
      minifyEnabled false 
      multiDexKeepFile file("multidex.txt") 
      multiDexKeepProguard file("multidex.keep") 
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 
     } 
    } 

    dexOptions { 
     incremental false 
     preDexLibraries = false 
     jumboMode = false 
     javaMaxHeapSize "4g" 
    } 

    sourceSets{ 
     main{ 
      jniLibs.srcDir 'src/main/libs' 
      jni.srcDirs = [] //disable automatic ndk-build call 
     } 
    } 
} 

dependencies { 
    compile fileTree(dir: 'libs', include: ['*.jar']) 
    testCompile 'junit:junit:4.12' 
    compile 'com.android.support:multidex:1.0.1' 

    compile 'com.android.support:appcompat-v7:23.1.1' 
    compile 'com.android.support:design:23.1.1' 
    compile 'com.android.support:cardview-v7:23.1.1' 

    xxxxxxxxxxxxx 
    xxxxxxxxxxxxx 
    xxxxxxxxxxxxx 
    xxxxxxxxxxxxx 
    xxxxxxxxxxxxx 
    xxxxxxxxxxxxx 
    xxxxxxxxxxxxx 
} 

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


afterEvaluate { 
    tasks.matching { 
     it.name.startsWith('dex') 
    }.each { dx -> 
     if (dx.additionalParameters == null) { 
      dx.additionalParameters = [] 
     } 
     dx.additionalParameters += '--multi-dex' 
     dx.additionalParameters += "--main-dex-list=$projectDir/multidex.keep".toString() 
    } 
} 

我曾嘗試以下指南和他們都沒有似乎工作：當我嘗試打開app/build/intermediates/multi-dex/debug/maindexlist.txt，同一班是在那裏列出。

1. 導向這裏給出multidex from developer.android.com
2. Article on medium
3. 在github https://github.com/frogermcs/HelloMultidex
4. 例題項目示例1項目上https://github.com/mmadev/multidex-sample

有沒有人有一個變通的呢？我會很感激。

謝謝。

Answer 1

在你的類的定義中有錯字：「class」出現兩次。

public class class AudioAdManager 
public class class PlaybackService 

除了這個（現在已修復）的問題，你能解釋你是如何調用你的triggerSomthing（）方法嗎？它是否在PlaybackService對象上調用，或者您是否試圖靜態調用它？