How to use parcelable with setters and getters?

Question

I'm using the parcelable implemenation because it's easier to pass an ArrayList with putParcelableArrayListExtra, but what is the purpose of protected Song(Parcel in) and public void writeToParcel(Parcel dest, int flags)

My parcelable class

public class Song implements Parcelable {

    private long id = 0;
    private String data = "";
    private String title = "";
    private String artist = "";

    public Song(){
    }

    protected Song(Parcel in) {
          id = in.readLong();
          data = in.readString();
          title = in.readString();
          artist = in.readString();
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeLong(id);
        dest.writeString(data);
        dest.writeString(title);
        dest.writeString(artist);
    }

    public void setId(long songId){ this.id = songId; }
    public long getId(){
        return id;
    }
    public void setData(String data) { this.data = data; }
    public String getData(){return data;}

    //Optional meta data

    public void setTitle(String title){ this.title = title; }
    public String getTitle() { return title; }

    public void setArtist(String artist){
        this.artist = artist;
    }
    public String getArtist() {
        return artist;
    }

For what is this used, do i still need to add this if i'm not passing any parameters to my Song() constructor or can i just leave it empty?

protected Song(Parcel in) {
            id = in.readLong();
            data = in.readString();
            title = in.readString();
            artist = in.readString();
        }

 @Override
        public void writeToParcel(Parcel dest, int flags) {
            dest.writeLong(id);
            dest.writeString(data);
            dest.writeString(title);
            dest.writeString(artist);
        }

score 0 · Answer 1 · answered Oct 05 '19 at 06:39

0

We need this method because it overrides method and with the help getter and setter will work automatically if you don't remove this and manually make setter & getter

@Override
public void writeToParcel(Parcel dest, int flags) {
     dest.writeLong(id);
     dest.writeString(data);
     dest.writeString(title);
     dest.writeString(artist);
}

answered Oct 05 '19 at 06:39

Gohel Dhaval

820
1
8
12

So i need to keep this even though i'm using setters and getters? – Vince VD Oct 05 '19 at 06:44
No no need to keep this when you use getters & setters – Gohel Dhaval Oct 05 '19 at 09:05
Weird, because when i removed them my data was not being stored. I added them back and now it does work? – Vince VD Oct 05 '19 at 09:09
1

Ohh sorry, we should need to add because it overrides a method of parcelable class and they manage data storing in variables. – Gohel Dhaval Oct 05 '19 at 09:11

How to use parcelable with setters and getters?

1 Answers1