我正在为我的项目使用几个库，我使用build.gradle添加依赖项，例如Volley和Caligraphy。我试图运行应用程序并且项目构建得很好，但是当应用程序试图访问其中一个外部库时，我得到了这个错误：
09-15 12:35:30.037 20659-20659/com.node8.peek:background_crash E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.node8.peek:background_crash, PID: 20659
java.lang.NoClassDefFoundError: Failed resolution of: Luk/co/chrisjenx/calligraphy/CalligraphyConfig$Builder;
at com.node8.peek.PeekApplication.onCreate(PeekApplication.java:48)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1012)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4593)
at android.app.ActivityThread.access$1600(ActivityThread.java:154)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1382)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5294)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
Caused by: java.lang.ClassNotFoundException: Didn't find class "uk.co.chrisjenx.calligraphy.CalligraphyConfig$Builder" on path: DexPathList[[zip file "/data/app/com.node8.peek-6/base.apk"],nativeLibraryDirectories=[/data/app/com.node8.peek-6/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.node8.peek.PeekApplication.onCreate(PeekApplication.java:48)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1012)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4593)
at android.app.ActivityThread.access$1600(ActivityThread.java:154)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1382)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5294)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
Suppressed: java.lang.ClassNotFoundException: uk.co.chrisjenx.calligraphy.CalligraphyConfig$Builder
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)
... 13 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
我已经尝试清理项目并使Invalidate Cache＆amp;在Android Studio上重新启动，但我仍然遇到错误。可能导致此错误的原因是什么？这是我的build.gradle：
buildscript {
repositories {
mavenCentral()
maven { url 'https://maven.fabric.io/public' }
}
dependencies {
classpath 'io.fabric.tools:gradle:1.+'
classpath 'com.google.gms:google-services:3.0.0'
}
}
apply plugin: 'com.android.application'
apply plugin: 'io.fabric'
apply plugin: 'android'
android {
compileSdkVersion 23
buildToolsVersion "23.0.3"
packagingOptions {
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/NOTICE'
exclude 'META-INF/NOTICE.txt'
}
defaultConfig {
applicationId "com.node8.peek"
minSdkVersion 21
targetSdkVersion 22
versionCode 1
versionName "1.0"
multiDexEnabled true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
dexOptions {
javaMaxHeapSize "4g"
}
}
repositories {
maven { url "http://jzaccone.github.io/SlidingMenu-aar" }
mavenCentral()
jcenter();
maven {
url "https://jitpack.io"
}
maven { url 'https://maven.fabric.io/public' }
}
dependencies {
compile 'com.devbrackets.android:exomedia:3.0.2'
compile 'com.github.castorflex.verticalviewpager:library:19.0.1'
compile 'uk.co.chrisjenx:calligraphy:2.2.0'
compile 'com.jeremyfeinstein.slidingmenu:library:1.3@aar'
compile 'net.simonvt.menudrawer:menudrawer:3.0.+@aar'
compile 'com.sothree.slidinguppanel:library:3.3.0'
compile 'com.nikoyuwono:toolbar-panel:0.1.1'
compile 'com.android.support:design:22.2.1'
compile 'de.hdodenhof:circleimageview:2.0.0'
compile 'com.google.android.gms:play-services:9.2.0'
compile 'com.splitwise:tokenautocomplete:2.0.7@aar'
compile 'com.klinkerapps:android-chips:1.0.1@aar'
compile('org.apache.httpcomponents:httpmime:4.3.5') {
exclude module: 'org.apache.httpcomponents:httpclient'
}
compile 'com.android.support:recyclerview-v7:22.2.1'
compile('com.github.ganfra:material-spinner:1.1.1') {
exclude group: 'com.android.support', module: 'appcompat-v7'
}
compile fileTree(include: ['*.jar'], dir: 'libs')
compile 'com.android.support:appcompat-v7:22.2.1'
compile 'com.google.code.gson:gson:2.3.1'
compile 'com.facebook.android:facebook-android-sdk:4.8.0'
compile 'com.android.support:recyclerview-v7:22.2.1'
compile files('libs/javacpp.jar')
compile files('libs/twitter4j-core-4.0.4.jar')
compile files('libs/javacv.jar')
compile project(':volley')
compile('com.twitter.sdk.android:twitter:1.13.1@aar') {
transitive = true;
}
compile 'com.google.android.gms:play-services-maps:9.2.0'
//compile 'com.google.android.gms:play-services-location:8.1.0'
compile 'com.google.maps.android:android-maps-utils:0.4'
compile 'com.tumblr:jumblr:0.0.11'
compile 'oauth.signpost:signpost-core:1.2.1.2'
compile 'oauth.signpost:signpost-commonshttp4:1.2.1.2'
compile 'com.theartofdev.edmodo:android-image-cropper:2.2.+'
compile('com.crashlytics.sdk.android:crashlytics:2.6.0@aar') {
transitive = true;
}
compile 'com.android.support:multidex:1.0.1'
compile 'com.github.jonisaa:MaterialCalendarview:v1.2.2'
compile 'com.makeramen:roundedimageview:2.2.1'
compile 'com.github.lzyzsd:circleprogress:1.1.0@aar'
compile 'com.google.firebase:firebase-core:9.2.0' // this line must be included to integrate with Firebase
compile 'com.google.firebase:firebase-messaging:9.2.0'
compile 'com.google.android.gms:play-services-location:9.2.0'
compile 'com.google.android.gms:play-services-places:9.2.0'
compile 'com.timehop.stickyheadersrecyclerview:library:0.4.2@aar'
}
apply plugin: 'com.google.gms.google-services'
编辑：我已尝试从我的项目中删除书法库，但现在应用程序在我尝试访问凌空库时会出错。
Edit2：启用Instant Run解决了问题，但我不想使用Instant Run，因为它导致应用程序在首次安装时需要很长时间才能加载。为什么即时运行会导致NoClassDefFoundError？有没有办法在不打开Instant Run的情况下防止错误？
答案 0 :(得分：1)
你可以尝试将构建工具例如.24，gradle plugin，lib，android studio更新到最新版本，并尝试重建项目。
答案 1 :(得分：0)
如果您使用的是Android Studio 2.0，请关闭即时运行，检查multidex 1.0.1是否正在使用并检查您是否正在调用MultiDex.init（）在Calligraphy配置之前。希望它能解决这个问题。