CODEWITHSUNDEEP
androidandroid-fragments
Jeongbebs
Jeongbebs

Reputation: 4120

Passing data between two fragments with listview

I have a tablayout using fragments and viewpager. Now in my second tab, I have this layout. enter image description here

In the left, I have a fragment loaded, ListPlacesFragment. On the right is a different Fragment, DetailsPlacesFrament. When I click an item on the listview, I want to display it on the right fragment. I have used intents on activity, but i don't know how to pass the index of the list to the fragment on the right to display the appropriate details. Please help thanks!

Upvotes: 0

Views: 1298

Answers (2)

chip
chip

Reputation: 1789

Let's say that this is your Activity that contains DetailsPlacesFragment

================================================================
|                   |                                          |
|    ListView       |        FrameLayout                       |
|                   |                                          |
================================================================

In your ListView, set the adapter to something like this

AdapterView.OnItemClickListener listener = new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        displayDetailsPlacesFragment(position);
    }
}

and for the replaceable fragments in your Activity,

public void displayDetailsPlacesFragment(int position) {
    Fragment fragment = DetailsPlacesFragment.newInstance(position);
    FragmentTransaction ft = getFragmentManager().beginTransaction();
    ft.replace(R.id.content_frame, fragment);  // FrameLayout id
    ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
    ft.addToBackStack(null);
    ft.commit();
}

and for your DetailsPlacesFragment, you define it by passing the position of the list item

public class DetailsPlacesFragment extends Fragment {
    public static DetailsPlacesFragment newInstance(int position) {
        DetailsPlacesFragment fragment = new DetailsPlacesFragment();
        Bundle args = new Bundle();
        args.putInt("position", position);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle icicle) {
        int position = getArguments().getInt("position");  // use this position for specific list item
        return super.onCreateView(inflater, container, icicle);
    }
}

Upvotes: 1

Matt Kula
Matt Kula

Reputation: 268

You should use your Activity as a mediator between the two fragments. What I would do is create an interface that the activity will implement like PlaceClickListener:

public interface PlaceClickListener{
    public void onPlaceClicked(int index);
}

In your activity, you have to implement it:

class MainActivity implements PlaceClickListener {

    /* other code */

    public void onPlaceClicked(int index){
        /* call function for detail fragment here */
    }
}

Then in your list fragment do something such as this when you click on an item:

((PlaceClickListener)getActivity()).onPlaceClicked(int index);

Then you can create a public method in the right fragment that you use the index to send the details to.

Upvotes: 0

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