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我正在构建一个 Android 小部件，并尝试为小部件中的每个列表项添加点击功能。它可以工作，只是我无法将预期的 Extras 放在意图中。当我尝试将实现 Parcalable 接口的类 Parallel 放在那里时，它优雅地失败并出现以下错误。小部件本身是否有可能无法访问该类？（它位于我的应用程序命名空间和它的公共）

10-01 11:13:50.819  18503-18809/? E/Parcel﹕ Class not found when unmarshalling: cz.cvut.kosapp.model.entities.Parallel
    java.lang.ClassNotFoundException: cz.cvut.kosapp.model.entities.Parallel
    at java.lang.Class.classForName(Native Method)
    at java.lang.Class.forName(Class.java:204)
    at java.lang.Class.forName(Class.java:169)
    at android.os.Parcel.readParcelableCreator(Parcel.java:2091)
    at android.os.Parcel.readParcelable(Parcel.java:2055)
    at android.os.Parcel.readValue(Parcel.java:1971)
    at android.os.Parcel.readMapInternal(Parcel.java:2255)
    at android.os.Bundle.unparcel(Bundle.java:223)
    at android.os.Bundle.putAll(Bundle.java:302)
    at android.content.Intent.fillIn(Intent.java:6352)
    at com.android.server.am.PendingIntentRecord.sendInner(PendingIntentRecord.java:210)
    at com.android.server.am.ActivityManagerService.startActivityIntentSender(ActivityManagerService.java:2603)
    at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:232)
    at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:1737)
    at android.os.Binder.execTransact(Binder.java:388)
    at dalvik.system.NativeStart.run(Native Method)
    Caused by: java.lang.NoClassDefFoundError: cz/cvut/kosapp/model/entities/Parallel
    ... 16 more
    Caused by: java.lang.ClassNotFoundException: Didn't find class "cz.cvut.kosapp.model.entities.Parallel" on path: DexPathList[[directory "."],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
    ... 16 more
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1 回答 1

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有时会出现一个奇怪的问题，Parcelable即无法找到进程之间的类，也许这里有人可以提醒我原因。在您Parallel传递的模型对象中，您应该添加显式调用getClassLoader().

所以像这样的东西......

protected Parallel(Parcel source) {
        super(source);

        // Explicitly get the class loader of this class as there is sometimes a
        // weird issue
        // when passing Parcel between processes
        Bundle data = source.readBundle(Parallel.class.getClassLoader());
        this.foo = data.getLong("foo");
        this.bar = data.getString("bar");
    }
于 2013-10-01T14:58:04.353 回答