Android, Can I use putExtra to pass multiple values

Question

I want to pass two values to another activity can I do this with putExtra or do I have to do it a more complicated way, which it seems from my reading. E.g.. can something l

Answer 1

For a single small amount of value putExtra is perfect but when you pass multiple values and need to pass custom ArrayList or List then I think it's a bad idea. Solution is you can use Parcelable. You and also use Singleton or Serializable also.

Parcelable:

Parcelable class which you need to share.

 public class MyParcelable implements Parcelable {
     private int mData;

     public int describeContents() {
         return 0;
     }

     public void writeToParcel(Parcel out, int flags) {
         out.writeInt(mData);
     }

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

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

     private MyParcelable(Parcel in) {
         mData = in.readInt();
     }
 }

Form your activity where you want to send

MyParcelable example = new MyParcelable();
.....
.....
Bundle bundle = new Bundle();
bundle.putParcelable("example", Parcels.wrap(example));

From another activity where you want to receive

MyParcelable example = Parcels.unwrap(getIntent().getParcelableExtra("example"));