Force sending data using SharedPreferences( fragment to fragment in PagerAdapter)

Question

I'm using SharedPreferences to store and send data from a fragment to 4 other fragments, but my problem is when the app is running and I send the data on click button it takes the other fragments sometime to actually receive the data ( or when swipe through the pages after 3 or 4 swipes they update) I have tried setUserVisibleHintin each fragment and onpagechangelistener in the activity but nothing changes. How can I make the other fragments to recieve the data as I swipe to the pages or as I press the button?

note: I don't want to put buttons in each fragment to load the data.

sender:

   int riddle;
   Context context = getActivity();
   SharedPreferences SU = context.getSharedPreferences(
                        "Riddle", Context.MODE_PRIVATE);
   SharedPreferences.Editor editor= SU.edit();
   editor.putString("Riddle",""+riddle);
   editor.commit();

other fragments:

      int Riddle;
      Context context = getActivity();
      SharedPreferences SU = context.getSharedPreferences(
                "Riddle", Context.MODE_PRIVATE);
      Riddle=  Integer.parseInt(SU.getString("riddle",""));

UPDATE I made a mistake in the original post , the sender should be:

    int riddle;
   Context context = getActivity();
   SharedPreferences SU = context.getSharedPreferences(
                        "Riddle", Context.MODE_PRIVATE);
   SharedPreferences.Editor editor= SU.edit();
   editor.putString("riddle",""+riddle);
   editor.commit();

because of the key thing.

one problem remains, the fragment im sending the data from is the last page(page 5) and when i send the data , the page next to it (page 4) doesnt update till i swipe to page 3 and come back to it

Instead of Context context = getActivity() you can use fragments getContext() right? — Sharath kumar, Oct 12 '17 at 06:35
Also change editor.commit() to editor.apply() and check if the problem solves. — Sharath kumar, Oct 12 '17 at 06:40

score 2 · Answer 1 · answered Oct 12 '17 at 06:11

2

Use same key for getting data from SharedPreferences which is used in sender. change :

Riddle=  Integer.parseInt(SU.getString("riddle",""));
                                        ^^^^^

to

Riddle=  Integer.parseInt(SU.getString("Riddle",""));

answered Oct 12 '17 at 06:11

ρяσѕρєя K

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oh yea im sorry that was a mistake thank you for pointing it out, still one problem the page next to the "sender" page doesnt reload – amirsoltani Oct 12 '17 at 06:30

score 1 · Accepted Answer · answered Oct 12 '17 at 06:17

1

use this

Riddle=  Integer.parseInt(SU.getString("Riddle",""));

instead of this

Riddle=  Integer.parseInt(SU.getString("riddle",""));

answered Oct 12 '17 at 06:17

AskNilesh

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sorry for that and thank you for pointing it out, still one problem the page next to the "sender" page doesnt reload – amirsoltani Oct 12 '17 at 06:30
@amirsoltani can you explain more – AskNilesh Oct 12 '17 at 06:32
yes I'm using viewpager so the fragment im sending the data from is the last page(page 5) and when i send the data , the page next to the page im sending the data from (page 4) doesnt update till i swipe to page 3 and come back to it – amirsoltani Oct 12 '17 at 06:35
@amirsoltani try this `viewPager.getAdapter().notifyDataSetChanged() ` – AskNilesh Oct 12 '17 at 06:42
@amirsoltani form more information check this https://stackoverflow.com/questions/18088076/update-fragment-from-viewpager – AskNilesh Oct 12 '17 at 06:44

Force sending data using SharedPreferences( fragment to fragment in PagerAdapter)

2 Answers2