CODEWITHSUNDEEP
androidandroid-intentandroid-activity
Luca
Luca

Reputation: 833

Sending back data from activity to already running activity

I have an activity Detail that start a new activity List via Intent.

In List I do stuff and then I need to pass some data back to Detail.

The stack, before calling back from List, should contain Detail (on Pause) and List (running).

The data I need to pass back are an ArrayList<MyObject>, where MyObject implements Parcelable (and all its needed methods), so I can use 

intent.putParcelableArrayListExtra("myList", myListOfParcelableObjects);

to send data via Intent.

The problem now is on the called activity, Detail.

I've tried to catch the new intent via onNewIntent(Intent intent) and onResume(..) method, but the first (even using setIntent(intent)) and the second doesn't get the new intent sent from List and the data contained in intent.

How can I get the new intent in Detail, manage new datas and "resume" Detail as it was before calling List?

Upvotes: 0

Views: 92

Answers (2)

Pankaj
Pankaj

Reputation: 861

You can use Singleton class for storing common data. Hope it will help.

Upvotes: 0

Itzik Samara
Itzik Samara

Reputation: 2288

create a Singleton Manager save the Data there and use the data when needed.

public class DataManager {

    private static DataManager instance = new DataManager();

    private int mData;
    private DataManager() {}

    public static DataManager getInstance() {
       return instance;
    }


    public void setData(int number) {
         mData = number;
     }
   public int getData() {
       return mData;
    }



}

Activity A

DataManager manager = DataManager.getInstance();
manager.setData(1);

Activity B

DataManaget manager = DataManager.getInstance();
int data = manager.getData();

this is an Example. Hope it helps.

Upvotes: 1

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