Parcelable Sparse Array Implementation

ParcelableSparseArray.java

package com.zala.model;

import android.os.Parcel;
import android.os.Parcelable;
import android.util.SparseArray;

/**
 * https://gist.github.com/kaushikgopal/9eea148a2188dc58fe37
 */
public class ParcelableSparseArray<T>
        extends SparseArray<T>
        implements Parcelable {

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

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

        @Override
        public ParcelableSparseArray[] newArray(int size) {
            return new ParcelableSparseArray[size];
        }
    };
    private SparseArray<Object> sparseArray;

    public ParcelableSparseArray(int size) {
        super(size);
    }

    public ParcelableSparseArray() {
        super();

    }

    // -----------------------------------------------------------------------
    // Parcelable implementation

    private ParcelableSparseArray(Parcel in) {
        int size = in.readInt();
        //sparseArray = new SparseArray<>(size);
        sparseArray = in.readSparseArray(ParcelableSparseArray.class.getClassLoader());
        for (int i = 0; i < size; i++) {
            int key = sparseArray.keyAt(i);
            put(key, (T) sparseArray.valueAt(i));
        }
    }

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

    @Override
    public void writeToParcel(Parcel out, int flags) {
        int size = size();
        out.writeInt(size);
        sparseArray = new SparseArray<>(size);
        for (int i = 0; i < size; i++) {
            sparseArray.put(keyAt(i), valueAt(i));
        }
        out.writeSparseArray(sparseArray);
    }
}

Does not work when process is killed. _sparseArray = in.readSparseArray(ParcelableSparseArray.class.getClassLoader()); is always empty. But it can store and restore other value size successfully.