How do I send an array of objects from one Activity to another?

问题

I have a class like:

Class persona implements Serializable {

    int age;
    String name;

}

And my first Activity fill an array:

persona[] p;

Then, I need this info in another Activity. How I can send it?

I try to make:

Bundle b = new Bundle();
b.putSerializable("persona", p);

But I Can't.

回答1:

AFAIK the is no method that put a serializable array into bundle any way here is a solution to use that uses parcel

change you class to this

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

public class persona implements Parcelable {

    int age;
    String name;

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

        @Override
        public persona[] newArray(int size) {
            // TODO Auto-generated method stub
            return new persona[size];
        }

        @Override
        public persona createFromParcel(Parcel source) {
            // TODO Auto-generated method stub
            return new persona(source);
        }
    };

    public persona(Parcel in) {
        super();
        age = in.readInt();
        name = in.readString();
    }

    public persona() {
        super();
        // TODO Auto-generated constructor stub
    }

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

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeInt(age);
        dest.writeString(name);

    }
}

then you can send the array like this

Bundle b = new Bundle();

b.putParcelableArray("persona", p);

btw using Parcelable instead of Serializable is more efficient in Android

回答2:

You class will need to implement Parcelable. Then, you can send it in a bundle by using the Bundle.putParcelableArray()-method.

Also, a general advice: Class names should always start uppercase

来源：https://stackoverflow.com/questions/13778485/how-do-i-send-an-array-of-objects-from-one-activity-to-another

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