Android"java.lang.RuntimeException:Parcelable visitedClassNotFoundException读取Serializable对象"

Question

我有一个Android应用程序,我在其中添加了一个枚举:

public enum RootNavigationOption {
    HOME(R.string.home, R.drawable.ic_home), SETTINGS(R.string.settings, R.drawable.ic_settings), LOGOUT(
            R.string.logout_label, R.drawable.ic_logout);

    private int navigationOptionLabelResId;
    private int navigationOptionImageResId;

    private RootNavigationOption(int navigationOptionLabelResId, int navigationOptionImageResId) {

        this.navigationOptionLabelResId = navigationOptionLabelResId;
        this.navigationOptionImageResId = navigationOptionImageResId;
    }

    public int getNavigationOptionLabelResId() {
        return navigationOptionLabelResId;
    }

    public int getNavigationOptionImageResId() {
        return navigationOptionImageResId;
    }

    public static int getValuePosition(RootNavigationOption filterOption) {
        int idx = 0;
        for (RootNavigationOption navigationOptionIter : values()) {
            if (navigationOptionIter.equals(filterOption)) {
                return idx;
            }
            idx++;
        }
        return 0;
    }
}

我把这个枚举放在了几个意图包中,以便与我的主要活动进行交流.我的enum解决方案中已经有一个这样的,这不会导致任何问题.但是,当我使用这个新enum的定义运行我的应用程序时,它会立即崩溃:

 java.lang.RuntimeException: Parcelable encounteredClassNotFoundException reading a Serializable object (name = com.pack1.pack2.pack3.helpers.RootNavigationOption)
    at android.os.Parcel.readSerializable(Parcel.java:2219)
    at android.os.Parcel.readValue(Parcel.java:2064)
    at android.os.Parcel.readArrayMapInternal(Parcel.java:2314)
    at android.os.Bundle.unparcel(Bundle.java:249)
    at android.os.Bundle.getString(Bundle.java:1118)
    at android.app.ActivityOptions.<init>(ActivityOptions.java:310)
    at com.android.server.am.ActivityRecord.updateOptionsLocked(ActivityRecord.java:668)
    at com.android.server.am.ActivityStack.startActivityLocked(ActivityStack.java:1778)
    at com.android.server.am.ActivityStackSupervisor.startActivityUncheckedLocked(ActivityStackSupervisor.java:1769)
    at com.android.server.am.ActivityStackSupervisor.startActivityLocked(ActivityStackSupervisor.java:1249)
    at com.android.server.am.ActivityStackSupervisor.startActivityMayWait(ActivityStackSupervisor.java:741)
    at com.android.server.am.ActivityManagerService.startActivityAsUser(ActivityManagerService.java:3118)
    at com.android.server.am.ActivityManagerService.startActivity(ActivityManagerService.java:3104)
    at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:135)
    at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:2071)
    at android.os.Binder.execTransact(Binder.java:404)
    at dalvik.system.NativeStart.run(Native Method)
 Caused by: java.lang.ClassNotFoundException: com.pack1.pack2.pack3.helpers.RootNavigationOption
    at java.lang.Class.classForName(Native Method)
    at java.lang.Class.forName(Class.java:251)
    at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:2262)
    at java.io.ObjectInputStream.readEnumDescInternal(ObjectInputStream.java:1553)
    at java.io.ObjectInputStream.readEnumDesc(ObjectInputStream.java:1534)
    at java.io.ObjectInputStream.readEnum(ObjectInputStream.java:1579)
    at java.io.ObjectInputStream.readNonPrimitiveContent(ObjectInputStream.java:768)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:1981)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:1938)
    at android.os.Parcel.readSerializable(Parcel.java:2213)
    ... 16 more
 Caused by: java.lang.NoClassDefFoundError: com/pack1/pack2/pack3/helpers/RootNavigationOption
    ... 26 more
 Caused by: java.lang.ClassNotFoundException: Didn't find class "com.pack1.pack2.pack3.helpers.RootNavigationOption" 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)
    ... 26 more

我无法找到问题的根源.我还考虑了以下帖子,没有任何结果:

• post1 - 我没有使用任何cusotmclass装载机.
• post2 - 我直接从ADT运行应用程序,没有涉及proguard.

我也有:

• 检查了我在bin文件夹中的类,所需的类就在那里.
• 用apktool反编译就绪apk,各自的smali也在那里

编辑

现在我肯定确定异常实际上是由于将枚举值放在用于启动活动的包中,尽管这些行在stacktrace中没有提到:

Bundle activityOptions = new Bundle();
activityOptions.putSerializable(Constants.VIEW_MODE, RootNavigationOption.HOME);
Intent intent = new Intent(this, MainActivity.class);

我已经将我的应用程序的逻辑更改为不仅仅使用此枚举值Bundle作为方法参数,现在它运行时没有任何异常.有没有人知道为什么会这样？

我现在也对这个问题给予了赏金,因为我更加困惑.

Answer 1

只需使用enum序数作为额外使用Enum.ordinal(); 另外,这应该让你RootNavigationOption.getValuePosition()过时了.

例:

final Intent intent = new Intent(this, MainActivity.class);
intent.putExtra(Constants.VIEW_MODE, RootNavigationOption.SETTINGS.ordinal());

稍后在您的MainActivity (或类似)中:

final int defaultViewModeOrdinal = RootNavigationOption.HOME.ordinal();
final int viewModeOrdinal = getIntent().getIntExtra(Constants.VIEW_MODE, defaultViewModeOrdinal);
final RootNavigationOption viewMode = RootNavigationOption.values()[viewModeOrdinal];

Answer 2

看起来 Android 正在将意图传递到另一个进程并尝试对其进行处理，而您的枚举不在该进程中；阅读：通过意图（最佳解决方案）传递枚举或对象以获取更多信息。