How to store nested Arraylists in a Bundle in Android

Question

I have this object in my Android App source code:

ArrayList<ArrayList<MyObject>> rsp

and i want to store it in a Bundle and use it in OnSaveInstanceState() method in my activity. Then i want to retrieve it from the bundle, too.

Should i use json? Is there another way?

use putParcelableArrayList() in bundle and MyObject should implement Parcelable. — Akshay Bhat 'AB'
– Akshay Bhat 'AB', Commented Dec 28, 2016 at 10:34

Community · Accepted Answer · 2017-05-23 11:53:43Z

1

you can use Parcelable to store the data in Bundle during OnSaveInstanceState()

use the below link for more details :

How to save custom ArrayList on Android screen rotate?

edited May 23, 2017 at 11:53

CommunityBot

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answered Dec 28, 2016 at 11:26

Zakir hussain

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Comments

Mayur Raval · Accepted Answer · 2016-12-28 10:43:23Z

1

If possible use Gson Library

 Gson gson = new Gson();
    String output = gson.toJson(rsp); // Create String and pass through bundle

Retrive that list from String

    //convert from string
String output =  // get that string from bundle
    ArrayList<ArrayList<MyObject>> fromString = gson.fromJson(output,new TypeToken<List<ArrayList<ArrayList<MyObject>>>>(){}.getType());

answered Dec 28, 2016 at 10:43

Mayur Raval

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