Android 4.4.4上的FlexJson ClassNotFound异常

Question

我有一个针对Android设备的multidex项目.我使用Flexjson.我已经用flexjson 3.3和2.x进行了测试.

它与Android 5.x完美配合,但在Android 4.4.4中崩溃.

看起来Dex支持库与旧的Android版本不合适但我无法分辨.

这是我的堆栈跟踪:

 06-29 03:50:44.763  11884-11884/com.pigdroid.gameboard E/AndroidRuntime? FATAL EXCEPTION: main
    Process: com.pigdroid.gameboard, PID: 11884
    flexjson.JSONException: [ layers.values ]:  Could not load com.pigdroid.game.board.tile.model.IntTileLayer
            at flexjson.ObjectBinder.findClassInMap(ObjectBinder.java:250)
            at flexjson.ObjectBinder.findClassName(ObjectBinder.java:213)
            at flexjson.ObjectBinder.bind(ObjectBinder.java:92)
            at flexjson.ObjectBinder.bindIntoCollection(ObjectBinder.java:110)
            at flexjson.factories.ListObjectFactory.instantiate(ListObjectFactory.java:13)
            at flexjson.ObjectBinder.bind(ObjectBinder.java:95)
            at flexjson.ObjectBinder.bindIntoObject(ObjectBinder.java:149)
            at flexjson.factories.ExistingObjectFactory.instantiate(ExistingObjectFactory.java:25)
            at flexjson.ObjectBinder.bind(ObjectBinder.java:95)
            at flexjson.ObjectBinder.bind(ObjectBinder.java:74)
            at flexjson.JSONDeserializer.deserialize(JSONDeserializer.java:241)
            at flexjson.JSONDeserializer.deserializeInto(JSONDeserializer.java:301)
            at com.pigdroid.game.model.memento.UndoableObject.from(UndoableObject.java:35)
            at com.pigdroid.game.controller.GameController.loadModelFromSerialized(GameController.java:108)
            at com.pigdroid.gameboard.view.detail.game.tile.TileBoardGameFragmentController.setGame(TileBoardGameFragmentController.java:692)
            at com.pigdroid.gameboard.view.detail.game.GameDetailFragment.onKickOff(GameDetailFragment.java:168)
            at com.pigdroid.gameboard.view.ServiceFragment.kickOffIf(ServiceFragment.java:71)
            at com.pigdroid.gameboard.view.detail.game.GameDetailFragment.kickOffIf(GameDetailFragment.java:159)
            at com.pigdroid.gameboard.view.ServiceFragment$3.bound(ServiceFragment.java:52)
            at com.pigdroid.gameboard.view.ServiceFragment$3.bound(ServiceFragment.java:48)
            at com.pigdroid.android.hateaidl.HateAIDLConnection$3.onServiceConnected(HateAIDLConnection.java:118)
            at android.app.LoadedApk$ServiceDispatcher.doConnected(LoadedApk.java:1101)
            at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:1118)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5001)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.ClassNotFoundException: Didn't find class "com.pigdroid.game.board.tile.model.IntTileLayer" on path: DexPathList[[directory "."],nativeLibraryDirectories=[/system/lib]]
            at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
            at android.app.LoadedApk$WarningContextClassLoader.loadClass(LoadedApk.java:430)
            at flexjson.ObjectBinder.findClassInMap(ObjectBinder.java:243)
            at flexjson.ObjectBinder.findClassName(ObjectBinder.java:213)
            at flexjson.ObjectBinder.bind(ObjectBinder.java:92)
            at flexjson.ObjectBinder.bindIntoCollection(ObjectBinder.java:110)
            at flexjson.factories.ListObjectFactory.instantiate(ListObjectFactory.java:13)
            at flexjson.ObjectBinder.bind(ObjectBinder.java:95)
            at flexjson.ObjectBinder.bindIntoObject(ObjectBinder.java:149)
            at flexjson.factories.ExistingObjectFactory.instantiate(ExistingObjectFactory.java:25)
            at flexjson.ObjectBinder.bind(ObjectBinder.java:95)
            at flexjson.ObjectBinder.bind(ObjectBinder.java:74)
            at flexjson.JSONDeserializer.deserialize(JSONDeserializer.java:241)
            at flexjson.JSONDeserializer.deserializeInto(JSONDeserializer.java:301)
            at com.pigdroid.game.model.memento.UndoableObject.from(UndoableObject.java:35)
            at com.pigdroid.game.controller.GameController.loadModelFromSerialized(GameController.java:108)
            at com.pigdroid.gameboard.view.detail.game.tile.TileBoardGameFragmentController.setGame(TileBoardGameFragmentController.java:692)
            at com.pigdroid.gameboard.view.detail.game.GameDetailFragment.onKickOff(GameDetailFragment.java:168)
            at com.pigdroid.gameboard.view.ServiceFragment.kickOffIf(ServiceFragment.java:71)
            at com.pigdroid.gameboard.view.detail.game.GameDetailFragment.kickOffIf(GameDetailFragment.java:159)
            at com.pigdroid.gameboard.view.ServiceFragment$3.bound(ServiceFragment.java:52)
            at com.pigdroid.gameboard.view.ServiceFragment$3.bound(ServiceFragment.java:48)
            at com.pigdroid.android.hateaidl.HateAIDLConnection$3.onServiceConnected(HateAIDLConnection.java:118)
            at android.app.LoadedApk$ServiceDispatcher.doConnected(LoadedApk.java:1101)
            at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:1118)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5001)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
            at dalvik.system.NativeStart.main(Native Method)

编辑:我已经向Android开发团队填写了一个问题,他们已经将错误记录为一个功能,即使它在后期版本上运行得非常好.如果有人发现这很烦人,请尝试投票重新开放:https://code.google.com/p/android/issues/detail？ id = 178607

Answer 1

我\xc2\xb4ve查看了失败的方法，ObjectBinder.findClassInMap他们得到了这样的类加载器：ClassLoader classLoader = Thread.currentThread().getContextClassLoader();

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我想 \xc2\xb4s 的多 dex 类加载器安装有问题，因为我 \xc2\xb4 在反序列化发生之前自己设置了加载器，它解决了问题。

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修复我在加载游戏模型之前添加的错误的行如下：

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    Thread.currentThread().setContextClassLoader(owner.getActivity().getBaseContext().getClassLoader());\n

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