Android : Class not found when unmarshalling java.lang.ClassNotFoundException

Question

My class PhotosList:

public class PhotosList extends DataList<Photo> {

public PhotosList() {}

@SuppressWarnings("unused")
public PhotosList(Parcel source) {
    super(source);
    items = new ArrayList<>();
    source.readList(items, Photo.class.getClassLoader());
}

@Override
public void writeToParcel(Parcel dest, int flags) {
    super.writeToParcel(dest, flags);
    dest.writeList(items);
}

...

My class Photo:

public class Photo extends BaseModel {

@SerializedName("photos")
public ArrayList<Image> images;

@SuppressWarnings("unused")
public Photo() {}

@SuppressWarnings("unused")
public Photo(Parcel source) {
    super(source);
    images = new ArrayList<>();
    source.readList(images, Image.class.getClassLoader());
}

@Override
public void writeToParcel(Parcel dest, int flags) {
    super.writeToParcel(dest, flags);
    dest.writeList(images);
}

...

My class DataList:

public class DataList<T> implements Parcelable {

@SerializedName("total_count")
public int total;

@SerializedName("message")
public String message;

@SerializedName("items")
public ArrayList<T> items;

@SuppressWarnings("unused")
public DataList() {}

@SuppressWarnings("unused")
public DataList(Parcel source) {
    total = source.readInt();
    message = source.readString();
}

@Override
public void writeToParcel(Parcel dest, int flags) {
    dest.writeInt(total);
    dest.writeString(message);
}

And I have this error:

Class not found when unmarshalling: com.xxx.model.PhotosList java.lang.ClassNotFoundException: com.xxx.model.PhotosList at java.lang.Class.classForName(Native Method) at java.lang.Class.forName(Class.java:324) at android.os.Parcel.readParcelableCreator(Parcel.java:2404) at android.os.Parcel.readParcelable(Parcel.java:2358) at android.os.Parcel.readValue(Parcel.java:2264) at android.os.Parcel.readArrayMapInternal(Parcel.java:2614) at android.os.BaseBundle.unparcel(BaseBundle.java:221) at android.os.BaseBundle.getString(BaseBundle.java:920) at android.content.Intent.getStringExtra(Intent.java:6183) at com.android.server.am.ActivityStackSupervisor.startActivityLocked(ActivityStackSupervisor.java:2707) at com.android.server.am.ActivityStackSupervisor.startActivityMayWait(ActivityStackSupervisor.java:2169) at com.android.server.am.ActivityManagerService.startActivityAsUser(ActivityManagerService.java:6322) at com.android.server.am.ActivityManagerService.startActivity(ActivityManagerService.java:6100) at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:170) at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3990) at android.os.Binder.execTransact(Binder.java:453) Caused by: java.lang.ClassNotFoundException: com.xxx.model.PhotosList at java.lang.Class.classForName(Native Method) at java.lang.BootClassLoader.findClass(ClassLoader.java:781) at java.lang.BootClassLoader.loadClass(ClassLoader.java:841) at java.lang.ClassLoader.loadClass(ClassLoader.java:469) at java.lang.Class.classForName(Native Method)  at java.lang.Class.forName(Class.java:324)  at android.os.Parcel.readParcelableCreator(Parcel.java:2404)  at android.os.Parcel.readParcelable(Parcel.java:2358)  at android.os.Parcel.readValue(Parcel.java:2264)  at android.os.Parcel.readArrayMapInternal(Parcel.java:2614)  at android.os.BaseBundle.unparcel(BaseBundle.java:221)  at android.os.BaseBundle.getString(BaseBundle.java:920)  at android.content.Intent.getStringExtra(Intent.java:6183)  at com.android.server.am.ActivityStackSupervisor.startActivityLocked(ActivityStackSupervisor.java:2707)  at com.android.server.am.ActivityStackSupervisor.startActivityMayWait(ActivityStackSupervisor.java:2169)  at com.android.server.am.ActivityManagerService.startActivityAsUser(ActivityManagerService.java:6322)  at com.android.server.am.ActivityManagerService.startActivity(ActivityManagerService.java:6100)  at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:170)  at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:3990)  at android.os.Binder.execTransact(Binder.java:453)  Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available

I get back the photolist object like that:

getIntent().setExtrasClassLoader(PhotosList.class.getClassLoader());
        PhotosList photosList = bundle.getParcelable(BUNDLE_KEY_PHOTOS);

Answer 1

you should refer to this article, read starting at "Parcelable, the Speed King". You are missing describeContents() and an inner class declaration Parcelable.Creator<ParcelableDeveloper> CREATOR