Question

I have a DialogFragment from where i am adding the item to the database table.

And i have another Fragment, which has a ListView where i am displaying all items from the database.
I could add the item to the database, but it doesn’t immediately appear on the ListView, which is fetching the items from database.

Answer 1

you can use the method yourListAdapter.notifyDataSetChanged() , see this

EDIT :

you add the item to database from fragment A , so you should create a global variable for your listAdapter in the fragment B ( the one which contains the listView) , and get your fragment in your Fragment A by tag , and then you should call :

//when you add the fragmentB to your Activity , make sure you set a Tag for it
FragmentB f = (FragmentB) getActivity().getSupportFragmentManager()
                .findFragmentByTag(TAG_FRAGMENT_B);

f.getMyListAdapter().notifyDataSetChanged();

EDIT 2 :

in your CustomListAdapter , add a method to refresh your List of objects ( my ) :

public void setMyList(List myListOfObjects) {
    this.my = myListOfObjects;
    this.notifyDataSetChanged();
}

and then , when you add the new Object to your database, retreive all data from the database, and then call :

f.getMyListAdapter().setMyList(newListOfObjects);//newListOFObjects contains the new data