How to have shared data/object between fragment android kotlin

Question

Everytime i am in need of having a shared data to use or to be updated in fragment, i always put the data in activity and create a method to get/update the data then access it in fragment through something like this

(activity as HomeActivity).updateData()

i feel like this is not the good way to do this, is there any better way to do this? having the same object to be accessed through different fragment

I am a newbie so any advice will be really appreciated, Thanks

Does this answer your question? [How to pass data between fragments](https://stackoverflow.com/questions/5194548/how-to-pass-data-between-fragments) — jsamol, Jan 04 '20 at 10:00

score 1 · Answer 1 · answered Jan 04 '20 at 09:58

Whenever you replace fragment from Activity or from anywhere you can pass data to fragment by setting data as Arguments.

   Testfragment = new TestFragment();
   Bundle bundle = new Bundle();
   bundle.putSerializable("key",<data to pass>);
   fragment.setArguments(bundle);
   replaceFragment(fragment);

Access same data in fragment by using

      Object obj = getArguments().getSerializable("key")

score 1 · Accepted Answer · answered Jan 04 '20 at 10:40

Please try the following:

Create a singleton class
In the singleton class create empty or valued variables
Create getter/setter for those variables if required
Access the variables from other classes/activities using the singleton object of the data holder class

This a system from MVP/MVC architecture and a very good practice

How to have shared data/object between fragment android kotlin

2 Answers2