How to pass data between fragments

Question

Im trying to pass data between two fragmens in my program. Its just a simple string that is stored in the List. The List is made public in fragments A, and when the user cli

Answer 1

Fragment class A

public class CountryListFragment extends ListFragment{

    /** List of countries to be displayed in the ListFragment */

    ListFragmentItemClickListener ifaceItemClickListener;   

    /** An interface for defining the callback method */
    public interface ListFragmentItemClickListener {
    /** This method will be invoked when an item in the ListFragment is clicked */
    void onListFragmentItemClick(int position);
}   

/** A callback function, executed when this fragment is attached to an activity */  
@Override
public void onAttach(Activity activity) {
    super.onAttach(activity);

    try{
        /** This statement ensures that the hosting activity implements ListFragmentItemClickListener */
        ifaceItemClickListener = (ListFragmentItemClickListener) activity;          
    }catch(Exception e){
        Toast.makeText(activity.getBaseContext(), "Exception",Toast.LENGTH_SHORT).show();
    }
}

Fragment Class B

public class CountryDetailsFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    /** Inflating the layout country_details_fragment_layout to the view object v */
    View v = inflater.inflate(R.layout.country_details_fragment_layout, null);

    /** Getting the textview object of the layout to set the details */ 
    TextView tv = (TextView) v.findViewById(R.id.country_details);      

    /** Getting the bundle object passed from MainActivity ( in Landscape   mode )  or from 
     *  CountryDetailsActivity ( in Portrait Mode )  
     * */
    Bundle b = getArguments();

    /** Getting the clicked item's position and setting corresponding  details in the textview of the detailed fragment */
    tv.setText("Details of " + Country.name[b.getInt("position")]);     

    return v;
    }

}

Main Activity class for passing data between fragments

public class MainActivity extends Activity implements ListFragmentItemClickListener {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
}


/** This method will be executed when the user clicks on an item in the listview */
@Override
public void onListFragmentItemClick(int position) {

    /** Getting the orientation ( Landscape or Portrait ) of the screen */
    int orientation = getResources().getConfiguration().orientation;


    /** Landscape Mode */
    if(orientation == Configuration.ORIENTATION_LANDSCAPE ){
        /** Getting the fragment manager for fragment related operations */
        FragmentManager fragmentManager = getFragmentManager();

        /** Getting the fragmenttransaction object, which can be used to add, remove or replace a fragment */
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

        /** Getting the existing detailed fragment object, if it already exists. 
         *  The fragment object is retrieved by its tag name  *
         */
Fragment prevFrag = fragmentManager.findFragmentByTag("in.wptrafficanalyzer.country.details");

        /** Remove the existing detailed fragment object if it exists */
        if(prevFrag!=null)
    fragmentTransaction.remove(prevFrag);           

        /** Instantiating the fragment CountryDetailsFragment */
  CountryDetailsFragment fragment = new CountryDetailsFragment();

        /** Creating a bundle object to pass the data(the clicked item's   position) from the activity to the fragment */ 
        Bundle b = new Bundle();

        /** Setting the data to the bundle object */
        b.putInt("position", position);

        /** Setting the bundle object to the fragment */
        fragment.setArguments(b);           

        /** Adding the fragment to the fragment transaction */
        fragmentTransaction.add(R.id.detail_fragment_container,   fragment,"in.wptrafficanalyzer.country.details");

        /** Adding this transaction to backstack */
        fragmentTransaction.addToBackStack(null);

        /** Making this transaction in effect */
        fragmentTransaction.commit();

    }else{          /** Portrait Mode or Square mode */
        /** Creating an intent object to start the CountryDetailsActivity */
        Intent intent = new Intent("in.wptrafficanalyzer.CountryDetailsActivity");

        /** Setting data ( the clicked item's position ) to this intent */
        intent.putExtra("position", position);

        /** Starting the activity by passing the implicit intent */
        startActivity(intent);          
      }
    }
 }

Detailde acitivity class

public class CountryDetailsActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    /** Setting the layout for this activity */
    setContentView(R.layout.country_details_activity_layout);

    /** Getting the fragment manager for fragment related operations */
    FragmentManager fragmentManager = getFragmentManager();

    /** Getting the fragmenttransaction object, which can be used to add, remove or replace a fragment */
    FragmentTransaction fragmentTransacton = fragmentManager.beginTransaction();

    /** Instantiating the fragment CountryDetailsFragment */
    CountryDetailsFragment detailsFragment = new CountryDetailsFragment();

    /** Creating a bundle object to pass the data(the clicked item's position) from the activity to the fragment */
    Bundle b = new Bundle();

    /** Setting the data to the bundle object from the Intent*/
    b.putInt("position", getIntent().getIntExtra("position", 0));

    /** Setting the bundle object to the fragment */
    detailsFragment.setArguments(b);

    /** Adding the fragment to the fragment transaction */
    fragmentTransacton.add(R.id.country_details_fragment_container, detailsFragment);       

    /** Making this transaction in effect */
    fragmentTransacton.commit();

    }
}

Array Of Contries

public class Country {

/** Array of countries used to display in CountryListFragment */
static String name[] = new String[] {
        "India",
        "Pakistan",
        "Sri Lanka",
        "China",
        "Bangladesh",
        "Nepal",
        "Afghanistan",
        "North Korea",
        "South Korea",
        "Japan",
        "Bhutan"
};
}

For More Details visit this link [http://wptrafficanalyzer.in/blog/itemclick-handler-for-listfragment-in-android/]. There are full example ..