Android Open Source - Photochat Friends Fragment

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License

The source code is released under:

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Java Source Code

package com.navneet.photochat;
/* www .j  av  a  2s. c  o  m*/
import java.util.List;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.GridView;
import android.widget.TextView;

import com.parse.FindCallback;
import com.parse.ParseException;
import com.parse.ParseQuery;
import com.parse.ParseRelation;
import com.parse.ParseUser;

public class FriendsFragment extends Fragment {

  public static final String TAG = FriendsFragment.class.getSimpleName();
  protected List<ParseUser> mFriends;
  protected ParseRelation<ParseUser> mFriendrelation;
  protected ParseUser mCurrentUser;
  protected GridView mFriendsGridView;

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.user_grid, container,
        false);
    mFriendsGridView = (GridView) rootView.findViewById(R.id.friendsGrid);
    // set empty text
    TextView emptyTextView = (TextView) rootView
        .findViewById(android.R.id.empty);
    mFriendsGridView.setEmptyView(emptyTextView);
    return rootView;
  }

  // Setting the onResume activity
  public void onResume() {
    super.onResume();
    // To define relationships
    mCurrentUser = ParseUser.getCurrentUser();
    mFriendrelation = mCurrentUser
        .getRelation(ParseConstants.KEY_FRIEND_RELATION);
    getActivity().setProgressBarIndeterminateVisibility(true);
    // Declaring variable
    ParseQuery<ParseUser> query = mFriendrelation.getQuery();
    // Arrange in ascending order
    query.addAscendingOrder(ParseConstants.KEY_USERNAME);
    query.findInBackground(new FindCallback<ParseUser>() {

      @Override
      public void done(List<ParseUser> friends, ParseException e) {

        getActivity().setProgressBarIndeterminateVisibility(false);
        if (e == null) {
          mFriends = friends;
          String[] usernames = new String[mFriends.size()];
          // Set a loop to set the different elements of the
          // string
          // array
          int i = 0;
          for (ParseUser user : mFriends) {
            usernames[i] = user.getUsername();
            i++;
          }
          // check whether gridView is empty or not
          if (mFriendsGridView.getAdapter() == null) {
            // Setting the custom grid adpater to display the
            // results
            UserAdpater adapter = new UserAdpater(getActivity(),
                mFriends);
            mFriendsGridView.setAdapter(adapter);
          } else {
            // refill the grid view if already created
            ((UserAdpater) mFriendsGridView.getAdapter())
                .refill(mFriends);
          }
        } else {
          // Logging exception
          Log.e(TAG, e.getMessage());

        }
      }

    });
  }

}

Java Source Code List