java - MultiDex NoClassDefFounderror

Question

我已将我的应用程序转换为 MultiDex 以承受 64k dex 限制。现在看起来像这样:

public class App extends MultiDexApplication {

private AppWrapper instance;

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

@Override
public void onCreate() {
    super.onCreate();

    if (instance == null) {
        instance = new AppWrapper(this);
    }
}
}

我已将所有常用逻辑从 App 提取到 AppWidget 以使 MultiDex 工作。它在其他队友的电脑上运行正常。但不是和我在一起。它在应用程序创建时不断抛出 java.lang.NoClassDefFoundError:

I/dalvikvm﹕ Failed resolving     Lcom/playday/app/core/AppWrapper; interface 8940 'Lretrofit/ErrorHandler;'
W/dalvikvm﹕ Link of class     'Lcom/playday/app/core/AppWrapper;' failed
I/dalvikvm﹕ Failed resolving     Lcom/playday/app/core/AppWrapper; interface 8940 'Lretrofit/ErrorHandler;'
W/dalvikvm﹕ Link of class     'Lcom/playday/app/core/AppWrapper;' failed
E/dalvikvm﹕ Could not find class     'com.playday.app.core.AppWrapper', referenced from method com.playday.app.core.App.onCreate
W/dalvikvm﹕ VFY: unable to resolve     new-instance 7076 (Lcom/playday/app/core/AppWrapper;) in Lcom/playday/app/core/App;
D/dalvikvm﹕ VFY: replacing opcode     0x22 at 0x0007
I/dalvikvm﹕ Failed resolving     Lcom/playday/app/core/AppWrapper; interface 8940 'Lretrofit/ErrorHandler;'
W/dalvikvm﹕ Link of class     'Lcom/playday/app/core/AppWrapper;' failed
D/dalvikvm﹕ DexOpt: unable to opt     direct call 0xc21b at 0x09 in Lcom/playday/app/core/App;.onCreate
I/MultiDex﹕ VM with version 1.6.0     does not have multidex support
I/MultiDex﹕ install
I/MultiDex﹕ MultiDexExtractor.load(    /data/app/com.playdayteam.playday.debug-1.apk, false)
I/MultiDex﹕ Detected that     extraction must be performed.
I/MultiDex﹕ Trying to delete old     file /data/data/com.playdayteam.playday.debug/code_cache/secondary-dexes/com.playdayteam.playday.    debug-2.apk.classes2.dex of size 1484912
I/MultiDex﹕ Deleted old file     /data/data/com.playdayteam.playday.debug/code_cache/secondary-dexes/com.playdayteam.playday.debug-2    .apk.classes2.dex
I/MultiDex﹕ Trying to delete old     file /data/data/com.playdayteam.playday.debug/code_cache/secondary-dexes/com.playdayteam.playday.    debug-2.apk.classes2.zip of size 540964
I/MultiDex﹕ Deleted old file     /data/data/com.playdayteam.playday.debug/code_cache/secondary-dexes/com.playdayteam.playday.debug-2    .apk.classes2.zip
D/dalvikvm﹕ GC_CONCURRENT freed     186K, 11% free 3245K/3640K, paused 2ms+4ms, total 28ms
D/dalvikvm﹕ WAIT_FOR_CONCURRENT_GC     blocked 5ms
D/dalvikvm﹕ GC_CONCURRENT freed     156K, 8% free 3593K/3904K, paused 3ms+2ms, total 22ms
I/MultiDex﹕ Extraction is needed     for file /data/data/com.playdayteam.playday.debug/code_cache/secondary-dexes/com.playdayteam.    playday.debug-1.apk.classes2.zip
I/MultiDex﹕ Extracting     /data/data/com.playdayteam.playday.debug/code_cache/secondary-dexes/com.playdayteam.playday.debug-1    .apk.classes576886388.zip
I/MultiDex﹕ Renaming to     /data/data/com.playdayteam.playday.debug/code_cache/secondary-dexes/com.playdayteam.playday.debug-1    .apk.classes2.zip
I/MultiDex﹕ Extraction success -     length /data/data/com.playdayteam.playday.debug/code_cache/secondary-dexes/com.playdayteam.playday.    debug-1.apk.classes2.zip: 540964
I/MultiDex﹕ load found 1 secondary     dex files
D/dalvikvm﹕ DexOpt: --- BEGIN 'com.    playdayteam.playday.debug-1.apk.classes2.zip' (bootstrap=0) ---
D/dalvikvm﹕ DexOpt: --- END 'com.    playdayteam.playday.debug-1.apk.classes2.zip' (success) ---
D/dalvikvm﹕ DEX prep '/data/data/com    .playdayteam.playday.debug/code_cache/secondary-dexes/com.playdayteam.playday.debug-1.apk.classes2.    zip': unzip in 28ms, rewrite 387ms
I/MultiDex﹕ install done
I/MultiDex﹕ install
D/AndroidRuntime﹕ Shutting down VM
W/dalvikvm﹕ threadid=1: thread     exiting with uncaught exception (group=0x41c1d930)
E/AndroidRuntime﹕ FATAL EXCEPTION:     main
    java.lang.NoClassDefFoundError: com.playday.app.core.AppWrapper
            at com.playday.app.core.App.onCreate(App.java:22)
            at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1006)
            at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4457)
            at android.app.ActivityThread.access$1300(ActivityThread.java:142)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1332)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:5105)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
            at dalvik.system.NativeStart.main(Native Method)    

我有相同的 Android Studio、gradle、sdk、jdk 版本，相同的代码。我什至尝试格式化硬盘并重新安装操作系统以确保环境相同。这个奇怪问题的原因可能是什么？

这是我的 build.gradle:

apply plugin: 'com.android.application'

repositories {
    maven { url 'http://dl.bintray.com/populov/maven' }
    mavenCentral()
    maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
}

android {
    compileSdkVersion project.api_level
    buildToolsVersion project.build_tools_version

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion project.api_level
    }

    sourceSets {
        instrumentTest.setRoot('src/test')
    }

    packagingOptions {
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/ASL2.0'
        exclude 'AndroidManifest.xml'
    }

    defaultConfig {
        versionName "0.3.2"
        versionCode 23
    }

    buildTypes {

        debug {
            debuggable true
            applicationIdSuffix ".debug"
        }

        beta {
            debuggable true
            signingConfig signingConfigs.release
            applicationIdSuffix ".beta"
        }

        release {
            signingConfig signingConfigs.release
            runProguard false
            proguardFile file('proguard-rules.txt')
            proguardFile getDefaultProguardFile('proguard-android-optimize.txt')
        }
    }

    dexOptions {
        incremental false
        preDexLibraries false
    }
}

dependencies {
    compile "com.android.support:support-v13:$project.support_lib_version"
    compile "com.android.support:support-v4:$project.support_lib_version"
    compile "com.android.support:appcompat-v7:$project.support_lib_version"
    compile 'com.google.android.gms:play-services:6.1.11'
    compile('de.keyboardsurfer.android.widget:crouton:1.8.5@aar') {
        exclude group: 'com.google.android', module: 'support-v4'
    }
    compile('com.octo.android.robospice:robospice:1.4.14'){
        exclude group: 'commons-io', module: 'commons-io'
    }
    compile('com.octo.android.robospice:robospice-retrofit:1.4.14'){
        exclude group: 'commons-io', module: 'commons-io'
    }
    compile 'com.squareup.retrofit:retrofit:1.6.1'
    compile 'com.google.code.gson:gson:2.3'
    compile 'com.viewpagerindicator:library:2.4.1@aar'
    compile 'com.squareup.picasso:picasso:2.3.3'
    compile 'com.squareup.okhttp:okhttp:2.0.0'
    compile 'com.squareup.okhttp:okhttp-urlconnection:2.0.0'

    compile 'com.etsy.android.grid:library:1.0.5'
    compile 'com.squareup:otto:1.3.4'
    compile 'com.darwinsys:hirondelle-date4j:1.5.1'
    compile 'com.github.chrisbanes.photoview:library:1.2.3'
    compile 'me.grantland:autofittextview:0.2.0'
    compile 'it.sephiroth.android.library.horizontallistview:library:1.2.1'
    compile 'org.ocpsoft.prettytime:prettytime:3.2.4.Final'
    compile 'com.google.guava:guava:18.0'
    compile 'com.github.castorflex.smoothprogressbar:library:0.5.2'
    compile 'com.makeramen:roundedimageview:1.3.0'
    compile 'org.lucasr.twowayview:twowayview:0.1.1'
    compile 'com.michaelpardo:activeandroid:3.1.0-SNAPSHOT'

    compile project(':libs:LoopingViewPager')
    compile project(':libs:PhotoView-2.2.1')
    compile files('libs/localytics.jar')
    compile files('libs/android-support-multidex.jar')

    compile 'net.hockeyapp.android:HockeySDK:3.0.2'
}

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

更新。我的 multidex.keep 文件:

android/support/multidex/BuildConfig.class
android/support/multidex/MultiDex$V14.class
android/support/multidex/MultiDex$V19.class
android/support/multidex/MultiDex$V4.class
android/support/multidex/MultiDex.class
android/support/multidex/MultiDexApplication.class
android/support/multidex/MultiDexExtractor$1.class
android/support/multidex/MultiDexExtractor.class
android/support/multidex/ZipUtil$CentralDirectory.class
android/support/multidex/ZipUtil.class
com/playday/app/models/notification/Badge.class
com/playday/app/models/User.class
com/playday/app/core/AppWrapper.class
com/playday/app/core/App.class

Answer 1

您的 AppWrapper 类无法加载，因为 retrofit.ErrorHandler 接口(interface)未包含在主 dex 文件中。

如何计算要放入 main-dex-list 文件中的类？
有一个script可以为您生成它。我写了一个 blogpost这显示了如何使用它。

更新(2014 年 10 月 31 日):
Gradle 插件 v0.14.0 现在自动完成。看我的回答here .

更新(2017 年 4 月 24 日):
developer guide解释了如果不能自动选择所有正确的类，如何使用 gradle 选项选择特定的类。