问题描述
我刚刚使用 Gradle 构建了一个用于发布的 APK(ProGuard 4.9 并已签名).当我启动应用程序时,它会因此错误而崩溃:
I've just built an APK using Gradle for release (ProGuard 4.9 and signed). When I launch the app it crash on this error :
E/AndroidRuntime( 8662): java.lang.AssertionError: impossible E/AndroidRuntime( 8662): at java.lang.Enum$1.create(Enum.java:44) E/AndroidRuntime( 8662): at java.lang.Enum$1.create(Enum.java:35) E/AndroidRuntime( 8662): at libcore.util.BasicLruCache.get(BasicLruCache.java:54) E/AndroidRuntime( 8662): at java.lang.Enum.getSharedConstants(Enum.java:210) E/AndroidRuntime( 8662): at java.lang.Enum.valueOf(Enum.java:190) E/AndroidRuntime( 8662): at kr.infli.s.Z(Inflikr.java:390) E/AndroidRuntime( 8662): at kr.infli.a.ev(Inflikr.java:409) E/AndroidRuntime( 8662): at kr.infli.activity.InflikrActivity.onResume(InflikrActivity.java:231) E/AndroidRuntime( 8662): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1192) E/AndroidRuntime( 8662): at android.app.Activity.performResume(Activity.java:5310) E/AndroidRuntime( 8662): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2778) E/AndroidRuntime( 8662): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2817) E/AndroidRuntime( 8662): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2250) E/AndroidRuntime( 8662): at android.app.ActivityThread.access$800(ActivityThread.java:135) E/AndroidRuntime( 8662): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) E/AndroidRuntime( 8662): at android.os.Handler.dispatchMessage(Handler.java:102) E/AndroidRuntime( 8662): at android.os.Looper.loop(Looper.java:136) E/AndroidRuntime( 8662): at android.app.ActivityThread.main(ActivityThread.java:5017) E/AndroidRuntime( 8662): at java.lang.reflect.Method.invoke(Native Method) E/AndroidRuntime( 8662): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) E/AndroidRuntime( 8662): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) E/AndroidRuntime( 8662): Caused by: java.lang.NoSuchMethodException: values [] E/AndroidRuntime( 8662): at java.lang.Class.getMethod(Class.java:661) E/AndroidRuntime( 8662): at java.lang.Class.getDeclaredMethod(Class.java:623) E/AndroidRuntime( 8662): at java.lang.Enum$1.create(Enum.java:41) E/AndroidRuntime( 8662): ... 20 more
看起来这个错误不应该发生:https://android.googlesource.com/platform/libcore/+/9edf43dfcc35c761d97eb9156ac4254152ddbc55/libdvm/src/main/java/java/lang/Enum.java
Looks like this error should not happen : https://android.googlesource.com/platform/libcore/+/9edf43dfcc35c761d97eb9156ac4254152ddbc55/libdvm/src/main/java/java/lang/Enum.java
我的 build.gradle 包含:
My build.gradle contains :
buildTypes { release { runProguard true proguardFile file('./proguard-project.txt') signingConfig signingConfigs.release } }
我的 proguard-project.txt 包含
My proguard-project.txt contains
-useuniqueclassmembernames -keepattributes SourceFile,LineNumberTable + a bunch of keep class, dontnote, dontwarn,...
当我从 build.gradle 中删除 ProGuard 时,它不会崩溃.
When I remove ProGuard from build.gradle it do not crash.
当我在 Ant 构建中使用 ProGuard 时,它可以工作(我最近迁移到 Gradle).
When I was using ProGuard from an Ant build it worked (I recently migrated to Gradle).
Gradle + ProGuard 有任何已知问题吗?
Any known issue with Gradle + ProGuard ?
谢谢
推荐答案
你必须告诉 ProGuard 保留一些 enum 方法.
You have to tell ProGuard to keep some enum methods.
Android SDK 工具使用这个 ProGuard 配置来实现它:
The Android SDK tools use this ProGuard configuration to achieve it:
# For enumeration classes, see http://www.51sjk.com/Upload/Articles/1/0/335/335856_20221102095117391.html#enumerations -keepclassmembers enum * { public static **[] values(); public static ** valueOf(java.lang.String); }
您可以将上述规则添加到您的 ProGuard 配置中,也可以(我更喜欢)包含默认的 Android 规则:
You can either add the above rule to your ProGuard configuration or you can (what I'd prefer) include the default Android rules:
minifyEnabled true proguardFile getDefaultProguardFile('proguard-android.txt') proguardFile file('./proguard-project.txt')