How to make a class with nested objects Parcelable

Question

I\'d like to make class A Parcelable.

public class A {
    public String str;
    public ArrayList list;
}

This is what I\'ve come

Answer 1

If you have only one Parcelable object inside your main Parcelable object, not list like the accepted answer case. Then it will be like the following:

Class A

public class A implements Parcelable {
    public String str;
    public B objectB;

    @Override
    public int describeContents() {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        //The parcelable object has to be the first one
        dest.writeParcelable(objectB, flags);
        dest.writeString(str);
    }

    private A(Parcel in) {
        this.objectB = in.readParcelable(B.class.getClassLoader());
        str = in.readString();
    }

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

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

Class B

public class B implements Parcelable {
    public String str;

    @Override
    public int describeContents() {
        // TODO Auto-generated method stub
        return 0;
    }

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

    private B(Parcel in) {
        str = in.readString();
    }

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

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

IMPORTANT: Please note that the order that you write and read the Parcelable object matters. Checkout this answer for more details