java.lang.NoSuchFieldError : PUBLIC_ONLY while using Box api in android in signed build 错误

Question

我开发了包含 Dropbox、Google drive 和 Box 云服务的 android 应用程序。我测试了它，一切正常。之后我签署了它，我意识到调试 apk 大小为 8.5MB，而签名 apk 大小为 7MB。我仍然测试了完整的应用程序，其中除 Box 云功能外一切正常。我遇到了以下异常

        11-28 12:51:14.129: E/AndroidRuntime(2702): FATAL EXCEPTION: main
    11-28 12:51:14.129: E/AndroidRuntime(2702): Process: com.idealtech.mycoud, PID: 2702
    11-28 12:51:14.129: E/AndroidRuntime(2702): java.lang.NoSuchFieldError: PUBLIC_ONLY
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at java.lang.Class.getDeclaredAnnotation(Native Method)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at java.lang.Class.getAnnotation(Class.java:290)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.b.a.c.f.ae.<clinit>(Unknown Source)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.b.a.c.z.<clinit>(Unknown Source)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.box.boxjavalibv2.jsonparsing.BoxJSONParser.<init>(Unknown Source)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.box.boxjavalibv2.BoxClient.a(Unknown Source)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.box.boxjavalibv2.BoxClient.<init>(Unknown Source)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.box.boxjavalibv2.BoxClient.<init>(Unknown Source)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.box.boxandroidlibv2.BoxAndroidClient.<init>(Unknown Source)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.box.boxandroidlibv2.activities.OAuthActivity.a(Unknown Source)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.box.boxandroidlibv2.activities.OAuthActivity.a(Unknown Source)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.box.boxandroidlibv2.activities.OAuthActivity.onCreate(Unknown Source)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at android.app.Activity.performCreate(Activity.java:5248)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1110)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2162)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2257)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at android.app.ActivityThread.access$800(ActivityThread.java:139)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1210)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at android.os.Handler.dispatchMessage(Handler.java:102)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at android.os.Looper.loop(Looper.java:136)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at android.app.ActivityThread.main(ActivityThread.java:5086)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at java.lang.reflect.Method.invokeNative(Native Method)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at java.lang.reflect.Method.invoke(Method.java:515)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
    11-28 12:51:14.129: E/AndroidRuntime(2702):     at dalvik.system.NativeStart.main(Native Method)

它没有获取它在调试中找到的库。我该怎么做才能解决这个问题？请帮我。由于这个问题，我无法发布我的应用程序。提前致谢。

Answer 1

我在使用 proguard 编译 jackson 库时遇到了这个问题，我通过在 proguard 文件中添加以下行来修复它。

-keepnames class com.fasterxml.jackson.** { 
*; 
}
-keepnames interface com.fasterxml.jackson.** { 
    *; 
}