java.util.Arrays$ArrayList cannot be cast to java.util.ArrayList in Parcelable object

Question

I have written the following classes:

public class Company implements Parcelable {

private int uid;
@SerializedName("field_user_org_name_value")
private String name;
@SerializedName("field_user_org_address_value")
private String address;
@SerializedName("field_user_org_category_tid")
private int category;
@SerializedName("field_user_org_town_tid")
private int cityId;
@SerializedName("image")
private String imageUrl;
private int online;
@SerializedName("field_user_org_description_value")
private String description;
@SerializedName("field_user_org_phone_value")
private String mobPhone;
@SerializedName("field_user_org_stac_phone_value")
private String phone;

public ArrayList<Queue> getQueues() {
    return queues;
}

@SerializedName("value_array")
private ArrayList<Queue> queues;

double lat;
double lng = 0;
double distance;


public double getDistance() {
    return distance;
}

public void setDistance(double distance) {
    this.distance = distance;
}

public double getLng() {
    return lng;
}

public void setLng(double lng) {
    this.lng = lng;
}

public double getLat() {
    return lat;
}

public void setLat(double lat) {
    this.lat = lat;
}

public String getDescription() {
    return description;
}

public String getMobPhone() {
    return mobPhone;
}

public String getPhone() {
    return phone;
}

public int getOnline() {
    return online;
}

public Company(Parcel in) {
    uid = in.readInt();
    name = in.readString();
    address = in.readString();
    category = in.readInt();
    cityId = in.readInt();
    imageUrl = in.readString();
    online = in.readInt();
    description = in.readString();
    mobPhone = in.readString();
    phone = in.readString();
    lat = in.readDouble();
    lng = in.readDouble();
    distance = in.readDouble();
    Parcelable[] parcelableArray = in.readParcelableArray(Queues.class.getClassLoader());
    Queue[] resultArray = null;
    if (parcelableArray != null) {
        resultArray = Arrays.copyOf(parcelableArray, parcelableArray.length, Queue[].class);
    }
    queues =(ArrayList)  Arrays.asList(resultArray);
}

public int getUid() {
    return uid;
}

public String getName() {
    return name;
}

public String getAddress() {
    return address;
}

public int getCategory() {
    return category;
}

public int getCityId() {
    return cityId;
}

public String getImageUrl() {
    return imageUrl;
}

@Override
public int describeContents() {
    return 0;
}

@Override
public void writeToParcel(Parcel dest, int flags) {
    dest.writeInt(uid);
    dest.writeString(name);
    dest.writeString(address);
    dest.writeInt(category);
    dest.writeInt(cityId);
    dest.writeString(imageUrl);
    dest.writeInt(online);
    dest.writeString(description);
    dest.writeString(mobPhone);
    dest.writeString(phone);
    dest.writeDouble(lat);
    dest.writeDouble(lng);
    dest.writeDouble(distance);
    Queue[] queueArray = new Queue[queues.size()];
    dest.writeParcelableArray(queues.toArray(queueArray), 0);
}

public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {

    @Override
    public Object createFromParcel(Parcel source) {
        return new Company(source);
    }

    @Override
    public Object[] newArray(int size) {
        return new Company[size];
    }
};


public static class CustomComparator implements Comparator<Company> {
    @Override
    public int compare(Company o1, Company o2) {
        return o1.getName().compareTo(o2.getName());
    }
}

public static class CustomComparatorDistance implements Comparator<Company> {
    @Override
    public int compare(Company o1, Company o2) {
        return Double.compare(o1.getDistance(), o2.getDistance());
    }
}

public static class Queue implements Parcelable {
    public int getCondition() {
        return condition;
    }

    public String getTime() {
        return time;
    }

    /**
     * 0 - Free
     * 1 - Busy
     * 2 - Not working
     */
    @SerializedName("sel")
    int condition;
    String time;

    @Override
    public int describeContents() {
        return 0;
    }

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

    public Queue(Parcel in) {

        condition = in.readInt();
        time = in.readString();
    }

    public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
        public Object createFromParcel(Parcel in) {
            return new Queue(in);
        }

        public Object[] newArray(int size) {
            return new Queue[size];
        }
    };
}
}

And i got this exception whn i want to store object to onother fragment:

java.lang.RuntimeException: Unable to start activity ComponentInfo{khuta.freeturn/khuta.freeturn.fragments.CompanyInfoActivity}: java.lang.ClassCastException: java.util.Arrays$ArrayList cannot be cast to java.util.ArrayList
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
        at android.app.ActivityThread.access$800(ActivityThread.java:135)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        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$MethodAndArgsCaller.run(ZygoteInit.java:785)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
        at dalvik.system.NativeStart.main(Native Method)
 Caused by: java.lang.ClassCastException: java.util.Arrays$ArrayList cannot be cast to java.util.ArrayList
        at khuta.freeturn.models.Company.<init>(Company.java:106)
        at khuta.freeturn.models.Company$1.createFromParcel(Company.java:161)
        at android.os.Parcel.readParcelable(Parcel.java:2104)
        at android.os.Parcel.readValue(Parcel.java:2013)
        at android.os.Parcel.readArrayMapInternal(Parcel.java:2314)
        at android.os.Bundle.unparcel(Bundle.java:249)
        at android.os.Bundle.getParcelable(Bundle.java:1206)
        at android.content.Intent.getParcelableExtra(Intent.java:4652)
        at khuta.freeturn.fragments.CompanyInfoActivity.onCreate(CompanyInfoActivity.java:77)
        at android.app.Activity.performCreate(Activity.java:5231)

I have read casting Arrays.asList causing exception: java.util.Arrays$ArrayList cannot be cast to java.util.ArrayList but its does not help me. I will be glad to get any help

Error in this line

 queues =(ArrayList)  Arrays.asList(resultArray);

Is Queue one of your own classes then? Not java.util.Queue? — Kevin Coppock
– Kevin Coppock, Commented Oct 8, 2014 at 20:13

chiastic-security · Accepted Answer · 2014-10-08 20:14:15Z

3

You need to change the type of your field queue to List<Queue> rather than ArrayList<Queue>. You also need to change

queues = (ArrayList)  Arrays.asList(resultArray);

to

queues = (List<Queue>)  Arrays.asList(resultArray);

The reason it's failing is that Arrays.asList() returns a List but not necessarily an ArrayList. You don't know the exact type that will be returned, so you should just cast to a List.

But List is a generic type, so you should include the type parameter, and cast it to List<Queue> rather than just List. (You'll get a compiler warning if you just use List.)

By the way, it's generally a good idea to avoid class names that are also used by standard JDK classes (like Queue). It will invite confusion for anyone who reads your code, and make it more likely that you'll accidentally use the wrong import at some point.

answered Oct 8, 2014 at 20:14

chiastic-security

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3 Comments

Kevin Coppock Over a year ago

Or alternately queues = new ArrayList<Queue>(Arrays.asList(resultArray));

chiastic-security Over a year ago

@kcoppock Could do, but unless you really need it to be an ArrayList, this will just slow things down.

Kevin Coppock Over a year ago

Agreed! :) Just an option.

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