当调用GoogleApiAvailability时,我的Android库(aar)中发现了类未找到异常。
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'
我认为问题在于播放服务库需要包含在aar中,而编译并不是这样做的。我尝试使用'运行时'但我得到了#gra; dsl运行时未找到"。
问题:
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"],nativeLibraryDirectories=[/data/app/com.myunityplugin.PushNotifications-1/lib/arm, /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.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')
}
项目级别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
}
答案 0 :(得分:14)
aar 文件不包含嵌套(或transitive)依赖项,并且没有pom文件描述库使用的依赖项。
这意味着,如果您使用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(您必须在私人或公共maven仓库中发布库),您将不会遇到同样的问题。
在这种情况下,gradle使用pom文件下载依赖项,该文件将包含依赖项列表。