Android 错误:dalvik.system.BaseDexClassLoader.findClass [英] Android error: dalvik.system.BaseDexClassLoader.findClass

问题描述

目前在我的生产应用中，我注意到这个错误:

Currently in my production app I am noticing this error:

java.lang.RuntimeException: 
  at android.app.ActivityThread.handleReceiver (ActivityThread.java:2648)
  at android.app.ActivityThread.access$1700 (ActivityThread.java:166)
  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:1359)
  at android.os.Handler.dispatchMessage (Handler.java:102)
  at android.os.Looper.loop (Looper.java:136)
  at android.app.ActivityThread.main (ActivityThread.java:5584)
  at java.lang.reflect.Method.invokeNative (Native Method)
  at java.lang.reflect.Method.invoke (Method.java:515)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:1268)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1084)
  at dalvik.system.NativeStart.main (Native Method)

并发现这是因为库冲突.我正在使用大约 7 个，它们都是应用程序正常运行所必需的.我做了 ./gradlew app:dependencies 并看到了一堆冲突(主要是 android.support 和 google-services)，我现在必须使用 exclude 标签解决它们.

and found out it is because of conflicting libraries. I am using around 7 and they all are necessary for the app to function correctly. I did the ./gradlew app:dependencies and saw a bunch of conflicts (mainly the android.support and also google-services) and I have to resolve them now with the exclude tag.

我的问题是如何正确设置正确的版本?我是强制所有库都使用某个库的最小版本，还是只是强制它们全部使用最新版本?

My question is how do I properly set the correct versions? Do I force all libs to go to the smallest version of a certain lib or do I just force them all to the latest?

对于菜鸟问题​​，我对在 android 中管理库相当陌生.

Sorry for the noob question I am fairly new to managin libs in android.

更多的堆栈跟踪

Caused by: java.lang.ClassNotFoundException: 
  at dalvik.system.BaseDexClassLoader.findClass (BaseDexClassLoader.java:56)
  at java.lang.ClassLoader.loadClass (ClassLoader.java:497)
  at java.lang.ClassLoader.loadClass (ClassLoader.java:457)
  at android.app.ActivityThread.handleReceiver (ActivityThread.java:2643)

还有一个类似的错误，但堆栈跟踪不同.

Also a similar error but with different stack trace.

app/build.gradle:

project.ext.react = [
    entryFile: "index.js"
]

apply from: "../../node_modules/react-native/react.gradle"

def enableSeparateBuildPerCPUArchitecture = false

def enableProguardInReleaseBuilds = false

android {
compileSdkVersion 28
buildToolsVersion "28.0.2"

    defaultConfig {
        applicationId "com.lisdoworker"
        minSdkVersion 18
        targetSdkVersion 28
        versionCode 15
        versionName "1.1"
        ndk {
            abiFilters "armeabi-v7a", "x86"
        }
        manifestPlaceholders = [
            tipsiStripeRedirectScheme: "example"
        ]
        multiDexEnabled true
    }
    signingConfigs {
        release {
            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
            }
        }
    }
    dexOptions {
        jumboMode true
    }
}

dependencies {
    // react-native-firebase
    implementation project(':react-native-firebase')

    implementation "com.google.firebase:firebase-core:16.0.4"
    implementation "com.google.firebase:firebase-messaging:17.3.4"
    implementation 'me.leolin:ShortcutBadger:1.1.21@aar'

    implementation(project(':react-native-google-places')){
        exclude group: 'com.google.android.gms', module: 'play-services-base'
        exclude group: 'com.google.android.gms', module: 'play-services-places'
        exclude group: 'com.google.android.gms', module: 'play-services-location'
    }

    implementation 'com.google.android.gms:play-services-base:16.+'
    implementation 'com.google.android.gms:play-services-places:16.+'
    implementation 'com.google.android.gms:play-services-location:16.+'
    implementation 'com.google.android.gms:play-services-wallet:16.+'
    implementation 'com.google.android.gms:play-services-identity:16.+'

    implementation project(':tipsi-stripe')
    implementation project(':react-native-linear-gradient')
    implementation project(':react-native-fast-image')

    implementation project(':react-native-vector-icons')
    implementation project(':react-native-image-picker')
    implementation project(':react-native-fetch-blob')
    implementation project(':react-native-fbsdk')

    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation "com.android.support:appcompat-v7:27.1.0"

    implementation "com.facebook.react:react-native:+"  // From node_modules
}

// 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'
}

apply plugin: 'com.google.gms.google-services'
com.google.gms.googleservices.GoogleServicesPlugin.config.disableVersionCheck = true

推荐答案

由于 minSdkVersion 18 你必须添加对 com.android.support:multidex:1.0.3<的依赖/code> 以获得适当的 Dalvik VM 支持.

due to minSdkVersion 18 you have to add a dependency to com.android.support:multidex:1.0.3 for proper Dalvik VM support.

Manifest.xml 也需要引用 Application 类.

并回答实际问题；首先删除这一行:

and to answer the actual question; first of all remove this one line:

com.google.gms.googleservices.GoogleServicesPlugin.config.disableVersionCheck = true

然后将 buildToolsVersion 更新为 28.0.3 并去掉这些 16.+ 版本号.

then update buildToolsVersionto 28.0.3 and get rid of these 16.+ version numbers.

静态版本号会导致相当可重现的结果.与此类似，必须手动更新这些版本号 - 但至少有人知道更新了哪个版本号以及必须恢复到哪个版本号，以防万一(值得付出努力).

static version numbers lead to rather reproducible results, compared to the + notation. alike this one has to manually update these version numbers - but at least one knows which version number was updated and to which version number one has to to revert, in case of issues (it's worth the effort).

com.android.support:appcompat-v7:27.1.0 也可以更新为 28.0.0.

之后，Android Studio 应该用红色标出一些依赖项 - 提供可能需要排除 com.google.android.gms 和 com.android.support 的线索- 或添加.例如.support-v4 是一个常见的排除候选 - 但它必须在匹配的版本中添加.

after that Android Studio should underline some dependencies in red - providing a clue which com.google.android.gms and com.android.support may need to be excluded - or added. eg. support-v4 is a common candidate for exclusion - but it has to be added at a matching version.

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