android - VM 有 multidex 支持，MultiDex 支持库被禁用。问题

Question

我已经尝试了互联网上的所有解决方案，但其中任何一个都有效，这是我的 gradle:

android {
    compileSdkVersion 25
    buildToolsVersion '25.0.0'

defaultConfig {
    applicationId "com.rocketjourney"
    minSdkVersion 21
    targetSdkVersion 24
    versionCode 68
    versionName "4.41"
    multiDexEnabled true
    vectorDrawables.useSupportLibrary = true
    testInstrumentationRunner "com.rocketjourney.helpers.CustomTestRunner"
}

configurations.all {
    resolutionStrategy.force 'com.google.code.findbugs:jsr305:1.3.9'
    resolutionStrategy.force 'com.squareup.okio:okio:1.13.0'
    resolutionStrategy.force 'com.squareup.okhttp3:okhttp:3.8.0'
}

dexOptions {
    javaMaxHeapSize "4g"
    jumboMode = true
}`

repositories {
    mavenCentral()
    maven { url 'http://oss.jfrog.org/artifactory/oss-snapshot-local' }
    maven { url "https://jitpack.io" }
    flatDir { dirs 'libs' }
    flatDir { dirs '../aars' }
    maven { url 'https://maven.fabric.io/public' }
}

dependencies {
    compile('com.crashlytics.sdk.android:crashlytics:2.7.1@aar') { transitive = true; }
    etc...
}`

我的 list 如下所示:

<application
    android:name="com.rocketjourney.RJApplication"
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"

在我的 RJApplication.class我有这个代码:

public class RJApplication extends Application {

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

但我现在的错误是:

11-08 11:54:36.494 5743-5743/? E/AndroidRuntime: FATAL EXCEPTION: main Process: com.rocketjourney, PID: 5743 java.lang.NoClassDefFoundError: Failed resolution of: Lio/fabric/sdk/android/services/common/FirebaseInfo; at com.crashlytics.android.CrashlyticsInitProvider.onCreate(CrashlyticsInitProvider.java:22) at android.content.ContentProvider.attachInfo(ContentProvider.java:1696) at android.content.ContentProvider.attachInfo(ContentProvider.java:1671) at android.app.ActivityThread.installProvider(ActivityThread.java:4999) at android.app.ActivityThread.installContentProviders(ActivityThread.java:4594) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4534) at android.app.ActivityThread.access$1500(ActivityThread.java:151) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5254) 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:903) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) Caused by: java.lang.ClassNotFoundException: Didn't find class "io.fabric.sdk.android.services.common.FirebaseInfo" on path: DexPathList[[zip file "/data/app/com.rocketjourney-2/base.apk"],nativeLibraryDirectories=[/data/app/com.rocketjourney-2/lib/x86, /vendor/lib, /system/lib]] 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.crashlytics.android.CrashlyticsInitProvider.onCreate(CrashlyticsInitProvider.java:22)  at android.content.ContentProvider.attachInfo(ContentProvider.java:1696)  at android.content.ContentProvider.attachInfo(ContentProvider.java:1671)  at android.app.ActivityThread.installProvider(ActivityThread.java:4999)  at android.app.ActivityThread.installContentProviders(ActivityThread.java:4594)  at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4534)  at android.app.ActivityThread.access$1500(ActivityThread.java:151)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)  at android.os.Handler.dispatchMessage(Handler.java:102)  at android.os.Looper.loop(Looper.java:135)  at android.app.ActivityThread.main(ActivityThread.java:5254)  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:903)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)  Suppressed: java.lang.ClassNotFoundException: io.fabric.sdk.android.services.common.FirebaseInfo 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

希望你们能帮助我，我将非常感激!

Answer 1

如果您的 minSdkVersion，则无需添加 multidex 支持。是 21。
来自 documentation :

Multidex support for Android 5.0 and higher

Android 5.0 (API level 21) and higher uses a runtime called ART which natively supports loading multiple DEX files from APK files. ART performs pre-compilation at app install time which scans for classesN.dex files and compiles them into a single .oat file for execution by the Android device. Therefore, if your minSdkVersion is 21 or higher, you do not need the multidex support library.

因此，您需要删除 compile 'com.android.support:multidex:1.0.1'从你的 build.gradle。然后你需要用 Application 扩展你的 RJApplication .同时删除 MultiDex.install(this);来自您的 attachBaseContext() .
您需要做的就是通过添加 multiDexEnabled true 将 multiDexEnabled 设置为 true .请引用 Configure your app for multidex