Android Proguard - ClassNotFoundException
Android Proguard - ClassNotFoundException
我为我的 android 应用启用了混淆器。我可以成功构建项目，但它在启动时因 classNotFoundException 而崩溃。它甚至找不到启动器 activity。这是我的混淆器规则文件
-libraryjars libs
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keepnames class com.mypackage.** { *; } //someone suggested this but doesn't work
# We only want obfuscation
-keepattributes InnerClasses,Signature
# Sdk
-keep public interface com.zendesk.sdk.** { *; }
-keep public class com.zendesk.sdk.** { *; }
# Appcompat and support
-keep interface android.support.v7.** { *; }
-keep class android.support.v7.** { *; }
-keep interface android.support.v4.** { *; }
-keep class android.support.v4.** { *; }
# Gson
-keep interface com.google.gson.** { *; }
-keep class com.google.gson.** { *; }
# Retrofit
#-keep class com.google.inject.** { *; }
#-keep class org.apache.http.** { *; }
#-keep class org.apache.james.mime4j.** { *; }
#-keep class javax.inject.** { *; }
#-keep class retrofit.** { *; }
#-keep interface retrofit.** { *; }
# Retrofit
-keep class com.squareup.okhttp.** { *; }
-keep interface com.squareup.okhttp.** { *; }
-dontwarn com.squareup.okhttp.**
-dontwarn rx.**
-dontwarn retrofit.**
-dontwarn okio.**
-keep class retrofit.** { *; }
-keepclasseswithmembers class * {
@retrofit.http.* <methods>;
}
# Jackson
-keepattributes *Annotation*,EnclosingMethod,Signature
-keepnames class com.fasterxml.jackson.** { *; }
-dontwarn com.fasterxml.jackson.databind.**
-keep class org.codehaus.** { *; }
-keepclassmembers public final enum org.codehaus.jackson.annotate.JsonAutoDetect$Visibility {
public static final org.codehaus.jackson.annotate.JsonAutoDetect$Visibility *; }
-keep public class your.class.** {
public void set*(***);
public *** get*();
}
#Picasso
-dontwarn com.squareup.okhttp.**
#-dontwarn javax.management.**
#-dontwarn java.lang.management.**
#-dontwarn org.apache.log4j.**
#-dontwarn org.apache.commons.logging.**
#-dontwarn org.json.*
#-dontwarn org.apache.commons.codec.binary.Base64
#-keep class javax.** {* ; }
#-keep class org.** { *; }
-dontwarn org.mortbay.**
-dontwarn org.slf4j.**
-dontwarn org.apache.log4j.**
-dontwarn org.apache.commons.logging.**
-dontwarn org.apache.commons.codec.binary.**
如果有帮助，这是我的 build.gradle 文件，但它不包含所有依赖项。我在 libs 文件夹中也有一些罐子。
apply plugin: 'com.android.application'
apply plugin: 'robolectric'
apply plugin: 'android'
apply plugin: 'newrelic'
android {
compileSdkVersion 21
buildToolsVersion "21.1.2"
defaultConfig {
applicationId "com.mypackage"
minSdkVersion 14
targetSdkVersion 21
versionCode 54
versionName "2.002"
multiDexEnabled true
testInstrumentationRunner "com.google.android.apps.common.testing.testrunner.GoogleInstrumentationTestRunner"
resConfigs "en", "fr" , "ar"
}
buildTypes {
release {
minifyEnabled true
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
debug {
minifyEnabled true
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
sourceSets {
androidTest {
setRoot('src/test')
}
}
dexOptions {
javaMaxHeapSize "4g"
}
lintOptions {
checkReleaseBuilds false
// Or, if you prefer, you can continue to check for errors in release builds,
// but continue the build even when errors are found:
abortOnError false
}
repositories{
maven { url 'https://zendesk.artifactoryonline.com/zendesk/repo' }
}
repositories {
mavenCentral()
}
dependencies {
compile fileTree(dir: 'libs', include: '*.jar')
compile 'com.android.support:appcompat-v7:21.+'
compile 'com.github.chrisbanes.photoview:library:1.2.3'
compile 'com.etsy.android.grid:library:1.0.5'
compile 'com.facebook.android:facebook-android-sdk:3.21.1'
compile 'com.google.android.gms:play-services-base:6.5.+'
compile 'com.google.android.gms:play-services-wallet:6.5.+'
compile 'com.google.android.gms:play-services-ads:6.5.+'
compile 'com.google.android.gms:play-services-maps:6.5.+'
compile 'com.google.android.gms:play-services-drive:6.5.+'
compile 'com.google.android.gms:play-services-appindexing:6.5.+'
compile 'com.google.android.gms:play-services-location:6.5.+'
compile 'com.google.android.gms:play-services-identity:6.5.+'
compile 'com.google.android.gms:play-services-plus:6.5.+'
compile 'com.android.support:multidex:1.0.+'
compile project(':Adjust')
compile project(':aFileChooser-cbccac1d1cb74a6d57d25c5ded61e4bf4fc40c91')
compile 'com.parse.bolts:bolts-android:1.+'
compile 'com.squareup.picasso:picasso:2.4.0'
compile 'com.android.support:recyclerview-v7:+'
compile (group: 'com.zendesk', name: 'sdk', version: '1.0.0.1'){
// exclude group:'picasso'
}
compile 'com.android.support:recyclerview-v7:+'
compile 'com.newrelic.agent.android:android-agent:4.+'
compile 'com.fasterxml.jackson.core:jackson-databind:2.4.2'
compile 'com.fasterxml.jackson.core:jackson-annotations:2.4.2'
compile 'com.fasterxml.jackson.core:jackson-core:2.4.2'
/*compile ('oauth.signpost:signpost-commonshttp4:1.2.1.2') {
exclude module: 'commons-logging'
exclude module: 'httpcore'
exclude module: 'httpclient'
}
compile ('oauth.signpost:signpost-core:1.2.1.2') {
exclude module: 'commons-codec'
}*/
androidTestCompile 'org.robolectric:robolectric:2.4'
androidTestCompile('junit:junit:4.12')
androidTestCompile('org.mockito:mockito-core:1.10.19')
}
packagingOptions {
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/NOTICE'
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/NOTICE.txt'
exclude 'META-INF/ASL2.0'
exclude 'LICENSE.txt'
}
}
robolectric {
include '**/*Test.class'
}
这是完整的堆栈跟踪：
02-17 19:01:09.752: E/AndroidRuntime(2079): FATAL EXCEPTION: main
02-17 19:01:09.752: E/AndroidRuntime(2079): Process: com.mypackage, PID: 2079
02-17 19:01:09.752: E/AndroidRuntime(2079): java.lang.NoClassDefFoundError: Failed resolution of: Lcom/mypackage/activities/MainActivity;
02-17 19:01:09.752: E/AndroidRuntime(2079): at cmypackage.application.ApplicationContextProvider.onCreate(Unknown Source)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1011)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4518)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.app.ActivityThread.access00(ActivityThread.java:144)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1339)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.os.Handler.dispatchMessage(Handler.java:102)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.os.Looper.loop(Looper.java:135)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.app.ActivityThread.main(ActivityThread.java:5221)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.reflect.Method.invoke(Native Method)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.reflect.Method.invoke(Method.java:372)
02-17 19:01:09.752: E/AndroidRuntime(2079): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
02-17 19:01:09.752: E/AndroidRuntime(2079): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
02-17 19:01:09.752: E/AndroidRuntime(2079): Caused by: java.lang.ClassNotFoundException: Didn't find class "mypackage.activities.MainActivity" on path: DexPathList[[zip file "/data/app/mypackage-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
02-17 19:01:09.752: E/AndroidRuntime(2079): ... 12 more
02-17 19:01:09.752: E/AndroidRuntime(2079): Suppressed: java.lang.NoClassDefFoundError: mypackage.activities.MainActivity
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.DexFile.defineClassNative(Native Method)
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.DexFile.defineClass(DexFile.java:226)
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:219)
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.DexPathList.findClass(DexPathList.java:321)
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54)
02-17 19:01:09.752: E/AndroidRuntime(2079): ... 14 more
02-17 19:01:09.752: E/AndroidRuntime(2079): Suppressed: java.lang.ClassNotFoundException: mypackage.MainActivity
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.Class.classForName(Native Method)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
02-17 19:01:09.752: E/AndroidRuntime(2079): ... 13 more
02-17 19:01:09.752: E/AndroidRuntime(2079): Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
编辑：下面是堆栈跟踪中缺失的部分。
02-17 19:01:09.749: I/MultiDex(2079): VM with version 2.1.0 has multidex support
02-17 19:01:09.749: I/MultiDex(2079): install
02-17 19:01:09.749: I/MultiDex(2079): VM has multidex support, MultiDex support library is disabled.
02-17 19:01:09.750: I/art(2079): Rejecting re-init on previously-failed class java.lang.Class<android.support.v4.app.FragmentActivity>
02-17 19:01:09.750: I/art(2079): Rejecting re-init on previously-failed class java.lang.Class<android.support.v4.app.FragmentActivity>
02-17 19:01:09.751: I/art(2079): Rejecting re-init on previously-failed class java.lang.Class<mypackage.activities.MainActivity>
02-17 19:01:09.751: I/art(2079): Rejecting re-init on previously-failed class java.lang.Class<mypackage.activities.MainActivity>
02-17 19:01:09.751: D/AndroidRuntime(2079): Shutting down VM
02-17 19:01:09.751: D/AndroidRuntime(2079): --------- beginning of crash
删除与 activity 相关的混淆规则以及所有与支持相关的规则 libaries.Android studio 默认具有那些 templates.You 可以通过在您的 [=21= 中添加此规则来启用它们]
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt')
}
}
另请编辑 Jackson 处理器的规则
-keep public class your.class.** {
public void set*(***);
public *** get*();
}
在此您的 class.** 是您为解析您的响应而创建的 POJO(getter/setter) class
您还需要确保添加在此处找到的 New Relic proguard 异常：https://docs.newrelic.com/docs/mobile-monitoring/mobile-monitoring-installation/android/installing-android-apps-gradle-android-studio#proguard
-keep class com.newrelic.** { *; }
-dontwarn com.newrelic.**
-keepattributes Exceptions, Signature, InnerClasses
我知道这是一个相当老的 post 但我想强调以下内容，以帮助将来的人。
ClassNotFoundException 是对使用反射访问的 class 应用名称混淆引起的异常。例如，如果 ProGuard 重命名 class MyClass，它在如下代码中访问：Class.forName("MyClass");，如果字符串仍然引用 [=11]，将抛出 ClassNotFoundException =].
这是我们需要添加 -keep 选项的地方，以便 ProGuard 不重命名 class;
-keep class com.example.MyClass
当使用广泛的 -keep 选项（以 .** { *; } 结尾）时，您将指示 ProGuard 不要缩小、优化或混淆所有 classes 和 class 成员通配符之前提到的包名称。这最终将导致优化不佳的项目。因此，最好将 -keep 选项缩小到只针对缺失的 class。在 OP 的示例中，抛出以下错误：
Caused by: java.lang.ClassNotFoundException: Didn't find class "mypackage.activities.MainActivity"
为缺失的 class 添加一个 -keep 选项，如下所示将解决这个特定问题；
-keep class mypackage.activities.MainActivity
如果您将 -addconfigurationdebugging 添加到配置文件，ProGuard 可以帮助您设置缩小范围的 -keep 选项，ProGuard 手册 here 中记录了有关此功能的更多详细信息。
最近发布了 ProGuard Playground，您可以快速直观地看到广泛的 -keep 选项与缩小的选项的效果。这里的一个好处是您不需要不断地（重新）构建项目。
我为我的 android 应用启用了混淆器。我可以成功构建项目，但它在启动时因 classNotFoundException 而崩溃。它甚至找不到启动器 activity。这是我的混淆器规则文件
-libraryjars libs
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keepnames class com.mypackage.** { *; } //someone suggested this but doesn't work
# We only want obfuscation
-keepattributes InnerClasses,Signature
# Sdk
-keep public interface com.zendesk.sdk.** { *; }
-keep public class com.zendesk.sdk.** { *; }
# Appcompat and support
-keep interface android.support.v7.** { *; }
-keep class android.support.v7.** { *; }
-keep interface android.support.v4.** { *; }
-keep class android.support.v4.** { *; }
# Gson
-keep interface com.google.gson.** { *; }
-keep class com.google.gson.** { *; }
# Retrofit
#-keep class com.google.inject.** { *; }
#-keep class org.apache.http.** { *; }
#-keep class org.apache.james.mime4j.** { *; }
#-keep class javax.inject.** { *; }
#-keep class retrofit.** { *; }
#-keep interface retrofit.** { *; }
# Retrofit
-keep class com.squareup.okhttp.** { *; }
-keep interface com.squareup.okhttp.** { *; }
-dontwarn com.squareup.okhttp.**
-dontwarn rx.**
-dontwarn retrofit.**
-dontwarn okio.**
-keep class retrofit.** { *; }
-keepclasseswithmembers class * {
@retrofit.http.* <methods>;
}
# Jackson
-keepattributes *Annotation*,EnclosingMethod,Signature
-keepnames class com.fasterxml.jackson.** { *; }
-dontwarn com.fasterxml.jackson.databind.**
-keep class org.codehaus.** { *; }
-keepclassmembers public final enum org.codehaus.jackson.annotate.JsonAutoDetect$Visibility {
public static final org.codehaus.jackson.annotate.JsonAutoDetect$Visibility *; }
-keep public class your.class.** {
public void set*(***);
public *** get*();
}
#Picasso
-dontwarn com.squareup.okhttp.**
#-dontwarn javax.management.**
#-dontwarn java.lang.management.**
#-dontwarn org.apache.log4j.**
#-dontwarn org.apache.commons.logging.**
#-dontwarn org.json.*
#-dontwarn org.apache.commons.codec.binary.Base64
#-keep class javax.** {* ; }
#-keep class org.** { *; }
-dontwarn org.mortbay.**
-dontwarn org.slf4j.**
-dontwarn org.apache.log4j.**
-dontwarn org.apache.commons.logging.**
-dontwarn org.apache.commons.codec.binary.**
如果有帮助，这是我的 build.gradle 文件，但它不包含所有依赖项。我在 libs 文件夹中也有一些罐子。
apply plugin: 'com.android.application'
apply plugin: 'robolectric'
apply plugin: 'android'
apply plugin: 'newrelic'
android {
compileSdkVersion 21
buildToolsVersion "21.1.2"
defaultConfig {
applicationId "com.mypackage"
minSdkVersion 14
targetSdkVersion 21
versionCode 54
versionName "2.002"
multiDexEnabled true
testInstrumentationRunner "com.google.android.apps.common.testing.testrunner.GoogleInstrumentationTestRunner"
resConfigs "en", "fr" , "ar"
}
buildTypes {
release {
minifyEnabled true
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
debug {
minifyEnabled true
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
sourceSets {
androidTest {
setRoot('src/test')
}
}
dexOptions {
javaMaxHeapSize "4g"
}
lintOptions {
checkReleaseBuilds false
// Or, if you prefer, you can continue to check for errors in release builds,
// but continue the build even when errors are found:
abortOnError false
}
repositories{
maven { url 'https://zendesk.artifactoryonline.com/zendesk/repo' }
}
repositories {
mavenCentral()
}
dependencies {
compile fileTree(dir: 'libs', include: '*.jar')
compile 'com.android.support:appcompat-v7:21.+'
compile 'com.github.chrisbanes.photoview:library:1.2.3'
compile 'com.etsy.android.grid:library:1.0.5'
compile 'com.facebook.android:facebook-android-sdk:3.21.1'
compile 'com.google.android.gms:play-services-base:6.5.+'
compile 'com.google.android.gms:play-services-wallet:6.5.+'
compile 'com.google.android.gms:play-services-ads:6.5.+'
compile 'com.google.android.gms:play-services-maps:6.5.+'
compile 'com.google.android.gms:play-services-drive:6.5.+'
compile 'com.google.android.gms:play-services-appindexing:6.5.+'
compile 'com.google.android.gms:play-services-location:6.5.+'
compile 'com.google.android.gms:play-services-identity:6.5.+'
compile 'com.google.android.gms:play-services-plus:6.5.+'
compile 'com.android.support:multidex:1.0.+'
compile project(':Adjust')
compile project(':aFileChooser-cbccac1d1cb74a6d57d25c5ded61e4bf4fc40c91')
compile 'com.parse.bolts:bolts-android:1.+'
compile 'com.squareup.picasso:picasso:2.4.0'
compile 'com.android.support:recyclerview-v7:+'
compile (group: 'com.zendesk', name: 'sdk', version: '1.0.0.1'){
// exclude group:'picasso'
}
compile 'com.android.support:recyclerview-v7:+'
compile 'com.newrelic.agent.android:android-agent:4.+'
compile 'com.fasterxml.jackson.core:jackson-databind:2.4.2'
compile 'com.fasterxml.jackson.core:jackson-annotations:2.4.2'
compile 'com.fasterxml.jackson.core:jackson-core:2.4.2'
/*compile ('oauth.signpost:signpost-commonshttp4:1.2.1.2') {
exclude module: 'commons-logging'
exclude module: 'httpcore'
exclude module: 'httpclient'
}
compile ('oauth.signpost:signpost-core:1.2.1.2') {
exclude module: 'commons-codec'
}*/
androidTestCompile 'org.robolectric:robolectric:2.4'
androidTestCompile('junit:junit:4.12')
androidTestCompile('org.mockito:mockito-core:1.10.19')
}
packagingOptions {
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/NOTICE'
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/NOTICE.txt'
exclude 'META-INF/ASL2.0'
exclude 'LICENSE.txt'
}
}
robolectric {
include '**/*Test.class'
}
这是完整的堆栈跟踪：
02-17 19:01:09.752: E/AndroidRuntime(2079): FATAL EXCEPTION: main
02-17 19:01:09.752: E/AndroidRuntime(2079): Process: com.mypackage, PID: 2079
02-17 19:01:09.752: E/AndroidRuntime(2079): java.lang.NoClassDefFoundError: Failed resolution of: Lcom/mypackage/activities/MainActivity;
02-17 19:01:09.752: E/AndroidRuntime(2079): at cmypackage.application.ApplicationContextProvider.onCreate(Unknown Source)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1011)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4518)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.app.ActivityThread.access00(ActivityThread.java:144)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1339)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.os.Handler.dispatchMessage(Handler.java:102)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.os.Looper.loop(Looper.java:135)
02-17 19:01:09.752: E/AndroidRuntime(2079): at android.app.ActivityThread.main(ActivityThread.java:5221)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.reflect.Method.invoke(Native Method)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.reflect.Method.invoke(Method.java:372)
02-17 19:01:09.752: E/AndroidRuntime(2079): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
02-17 19:01:09.752: E/AndroidRuntime(2079): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
02-17 19:01:09.752: E/AndroidRuntime(2079): Caused by: java.lang.ClassNotFoundException: Didn't find class "mypackage.activities.MainActivity" on path: DexPathList[[zip file "/data/app/mypackage-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
02-17 19:01:09.752: E/AndroidRuntime(2079): ... 12 more
02-17 19:01:09.752: E/AndroidRuntime(2079): Suppressed: java.lang.NoClassDefFoundError: mypackage.activities.MainActivity
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.DexFile.defineClassNative(Native Method)
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.DexFile.defineClass(DexFile.java:226)
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:219)
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.DexPathList.findClass(DexPathList.java:321)
02-17 19:01:09.752: E/AndroidRuntime(2079): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54)
02-17 19:01:09.752: E/AndroidRuntime(2079): ... 14 more
02-17 19:01:09.752: E/AndroidRuntime(2079): Suppressed: java.lang.ClassNotFoundException: mypackage.MainActivity
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.Class.classForName(Native Method)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
02-17 19:01:09.752: E/AndroidRuntime(2079): at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
02-17 19:01:09.752: E/AndroidRuntime(2079): ... 13 more
02-17 19:01:09.752: E/AndroidRuntime(2079): Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
编辑：下面是堆栈跟踪中缺失的部分。
02-17 19:01:09.749: I/MultiDex(2079): VM with version 2.1.0 has multidex support
02-17 19:01:09.749: I/MultiDex(2079): install
02-17 19:01:09.749: I/MultiDex(2079): VM has multidex support, MultiDex support library is disabled.
02-17 19:01:09.750: I/art(2079): Rejecting re-init on previously-failed class java.lang.Class<android.support.v4.app.FragmentActivity>
02-17 19:01:09.750: I/art(2079): Rejecting re-init on previously-failed class java.lang.Class<android.support.v4.app.FragmentActivity>
02-17 19:01:09.751: I/art(2079): Rejecting re-init on previously-failed class java.lang.Class<mypackage.activities.MainActivity>
02-17 19:01:09.751: I/art(2079): Rejecting re-init on previously-failed class java.lang.Class<mypackage.activities.MainActivity>
02-17 19:01:09.751: D/AndroidRuntime(2079): Shutting down VM
02-17 19:01:09.751: D/AndroidRuntime(2079): --------- beginning of crash
删除与 activity 相关的混淆规则以及所有与支持相关的规则 libaries.Android studio 默认具有那些 templates.You 可以通过在您的 [=21= 中添加此规则来启用它们]
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt')
}
}
另请编辑 Jackson 处理器的规则
-keep public class your.class.** {
public void set*(***);
public *** get*();
}
在此您的 class.** 是您为解析您的响应而创建的 POJO(getter/setter) class
您还需要确保添加在此处找到的 New Relic proguard 异常：https://docs.newrelic.com/docs/mobile-monitoring/mobile-monitoring-installation/android/installing-android-apps-gradle-android-studio#proguard
-keep class com.newrelic.** { *; }
-dontwarn com.newrelic.**
-keepattributes Exceptions, Signature, InnerClasses
我知道这是一个相当老的 post 但我想强调以下内容，以帮助将来的人。
ClassNotFoundException 是对使用反射访问的 class 应用名称混淆引起的异常。例如，如果 ProGuard 重命名 class MyClass，它在如下代码中访问：Class.forName("MyClass");，如果字符串仍然引用 [=11]，将抛出 ClassNotFoundException =].
这是我们需要添加 -keep 选项的地方，以便 ProGuard 不重命名 class;
-keep class com.example.MyClass
当使用广泛的 -keep 选项（以 .** { *; } 结尾）时，您将指示 ProGuard 不要缩小、优化或混淆所有 classes 和 class 成员通配符之前提到的包名称。这最终将导致优化不佳的项目。因此，最好将 -keep 选项缩小到只针对缺失的 class。在 OP 的示例中，抛出以下错误：
Caused by: java.lang.ClassNotFoundException: Didn't find class "mypackage.activities.MainActivity"
为缺失的 class 添加一个 -keep 选项，如下所示将解决这个特定问题；
-keep class mypackage.activities.MainActivity
如果您将 -addconfigurationdebugging 添加到配置文件，ProGuard 可以帮助您设置缩小范围的 -keep 选项，ProGuard 手册 here 中记录了有关此功能的更多详细信息。
最近发布了 ProGuard Playground，您可以快速直观地看到广泛的 -keep 选项与缩小的选项的效果。这里的一个好处是您不需要不断地（重新）构建项目。