Passing objects through intents?

Question

I know how intents are used to pass primitive values to another activity. How would i pass a "custom class" object, lets say Person class, to another activity.

Answer 1 · 2015-05-11T06:07:33Z

May 11, 2015 6:07am

Using the recommended method of Parcelable:

import android.os.Parcel;
import android.os.Parcelable;


public class Person implements Parcelable {
    private String firstName;
    private String lastName;

    public Person(String firstName, String lastName) {
        this.firstName = firstName;
        this.lastName = lastName;
    }

    public String getFirstName() {
        return firstName;
    }

    public String getLastName() {
        return lastName;
    }

    // Parcelable Interface --------

    // Creates the copy in the new Activity
    public static final Creator<Person> CREATOR =
        new Creator<Person>() {
            public Person createFromParcel(Parcel in) {
                return new Person(in);
            }

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

    // Used by CREATOR
    private Person(Parcel in) {
        firstName = in.readString();
        lastName = in.readString();
    }

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

    // Mind the read and write order. They
    // need to stay the same between this
    // method and the private constructor
    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(firstName);
        dest.writeString(lastName);
    }
}

Now you can pass in Person just like any other extra.

You can also implement Serializable instead, though it's not as optimized.

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Fahman Khan

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Passing objects through intents?

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Dan Johnson

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