Android: Passing Objects Between Fragments

Question

Before i start, i have look through question such as:

Passing data between fragments: screen overlap How to pass values between Fragments

as well as Android

Answer 1

I used to set object with Pacelable or Serializable to transfer, but whenever I add other variables to object(model), I have to register it all. It's so inconvenient.

It's super easy to transfer object between activities or fragments.

Android DataCache

1. put your data object to KimchiDataCache instance in your activity or fragment.

   User userItem = new User(1, "KimKevin");  // Sample Model
   
   KimchiDataCache.getInstance().put(userItem);
   
   // add your activity or fragment
   

2. Get your data object in your activity of fragment that you added.

   public class MainFragment extends Fragment{
        private User userItem;
   
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
   
            userItem = KimchiDataCache.getInstance().get(User.class);
        }