android – 在aar中找不到类

当调用GoogleApiAvailability时,我的 Android库(aar)中的类未找到异常.

Caused by: java.lang.classNotFoundException: Didn't find class "com.google.android.gms.common.GoogleApiAvailability" on path: DexPathList[[zip file "/data/app/com.myunityplugin.PushNotifications-1/base.apk"],nativeLibraryDirectories=[/data/app/com.myunityplugin.PushNotifications-1/lib/arm,/vendor/lib,/system/lib]]

错误是不言自明的,但我不确定我做错了什么.我很擅长gradle和AndroidStudio.

我的gradle.build中有以下依赖项：

compile 'com.google.android.gms:play-services:8.4.0'
    compile 'com.google.android.gms:play-services-gcm:8.4.0'

我认为问题是播放服务库需要包含在aar中,而编译不会这样做.我尝试使用’运行时’,但我得到“找不到gradle dsl运行时”.

问题：

>这是一个我需要在我的网站中包含播放服务库的问题,我该如何实现？ (如果没有,我该如何解决这个问题)
>我是否需要指定播放服务或播放服务-gcm是否足够？

错误信息/设置

导致错误的行

GoogleApiAvailability ServiceAvailability = GoogleApiAvailability.getInstance();

例外：

05-23 05:38:48.221 28055-28055/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.myunityplugin.PushNotifications,PID: 28055
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/common/GoogleApiAvailability;
   at com.myplugin.unitynotification.GCM.GCM.checkPlayServices(GCM.java:33)
   at com.myplugin.unitynotification.GCM.MainActivity.onCreate(MainActivity.java:80)
   at android.app.Activity.performCreate(Activity.java:6550)
   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1120)
   at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:3108)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3263)
   at android.app.ActivityThread.access$1000(ActivityThread.java:197)
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1687)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:145)
   at android.app.ActivityThread.main(ActivityThread.java:6897)
   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:1404)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)
Caused by: java.lang.classNotFoundException: Didn't find class "com.google.android.gms.common.GoogleApiAvailability" on path: DexPathList[[zip file "/data/app/com.myunityplugin.PushNotifications-1/base.apk"],/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.myplugin.unitynotification.GCM.GCM.checkPlayServices(GCM.java:33)
   at com.myplugin.unitynotification.GCM.MainActivity.onCreate(MainActivity.java:80)
   at android.app.Activity.performCreate(Activity.java:6550)
   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1120)
   at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:3108)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3263)
   at android.app.ActivityThread.access$1000(ActivityThread.java:197)
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1687)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:145)
   at android.app.ActivityThread.main(ActivityThread.java:6897)
   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:1404)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)
    Suppressed: java.lang.classNotFoundException: com.google.android.gms.common.GoogleApiAvailability
   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

App Level build.gradle

apply plugin: 'com.android.library'

android {
    compileSdkVersion 23
    buildToolsversion "23.0.2"

    defaultConfig {
        minSdkVersion 19
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'),'proguard-rules.pro'
        }
    }
}

dependencies {
    compile filetree(dir: 'libs',include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.1'
    compile 'com.google.android.gms:play-services:8.4.0'
    compile 'com.google.android.gms:play-services-gcm:8.4.0'
    provided files('lib-not-include/classes.jar')
}

项目级gradle.build

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.5.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

解决方法

aar文件不包含嵌套(或 transitive)依赖项,并且没有描述库使用的依赖项的pom文件.

这意味着,如果使用flatDir repo导入aar文件,则还必须在项目中指定依赖项.

您应该使用maven存储库(您必须在私有或公共maven存储库中发布库),您将不会遇到相同的问题.在这种情况下,gradle使用包含依赖项列表的pom文件下载依赖项.

原文地址：https://www.jb51.cc/android/312328.html

android – 在aar中找不到类

解决方法

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