Android Open Source - MentorMe User List Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.codepath.wwcmentorme.activities;
/*from w  ww.  ja  v  a2 s  .  co m*/
import java.util.ArrayList;
import java.util.List;

import android.app.FragmentManager.OnBackStackChangedListener;
import android.content.Context;
import android.content.Intent;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;

import com.codepath.wwcmentorme.R;
import com.codepath.wwcmentorme.adapters.MentorListAdapter;
import com.codepath.wwcmentorme.data.DataService;
import com.codepath.wwcmentorme.helpers.Async;
import com.codepath.wwcmentorme.helpers.Constants.Persona;
import com.codepath.wwcmentorme.helpers.Constants.UserDisplayMode;
import com.codepath.wwcmentorme.helpers.UIUtils;
import com.codepath.wwcmentorme.models.User;
import com.nhaarman.listviewanimations.swinginadapters.prepared.ScaleInAnimationAdapter;
import com.parse.GetCallback;
import com.parse.ParseException;
import com.parse.ParseGeoPoint;

public class UserListActivity extends AppActivity implements
    android.location.LocationListener, OnBackStackChangedListener {
  private ListView lvMentors;
  private MentorListAdapter mentorListAdapter;
  private ParseGeoPoint mGeoPoint;
  private LocationManager locationManager;
  private Location mLocation;
  private String provider;
  private long userId;
  private Persona mPersona;
  private UserDisplayMode mUserDisplayMode;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.user_list_fragment);
    setCurrentLocation();

    if (getIntent().hasExtra("userId")) {
      userId = getIntent().getLongExtra("userId", 0);
    }
    
    if (getIntent().hasExtra("persona")) {
      mPersona = (Persona)getIntent().getSerializableExtra("persona");
    } else {
      mPersona = Persona.MENTOR;
    }
    
    if (getIntent().hasExtra("userDisplayMode")) {
      mUserDisplayMode = (UserDisplayMode)getIntent().getSerializableExtra("userDisplayMode");
    } else {
      mUserDisplayMode = UserDisplayMode.PROFILE;
    }
    
    setTitle();    

    Async.dispatchMain(new Runnable() {
      @Override
      public void run() {
        populateListView();
      }
    });

  }

  private void setTitle() {
    DataService.getUser(userId, new GetCallback<User>() {
      @Override
      public void done(User user, ParseException e) {
        if (e == null) {
          StringBuilder title = new StringBuilder();
          if (userId == User.meId()) {
            title.append("Your ");
          } else {
            title.append(user.getFirstName() + "'s");
          }
          if (mUserDisplayMode.equals(UserDisplayMode.CHAT)) {
            title.append("Messages");
          } else {
            if (mPersona.equals(Persona.MENTOR)) {
              title.append("Incoming Requests");
            } else {
              title.append("Outgoing Requests");
            }
          }
          setTitle(title);
        } else {
          e.printStackTrace();
        }

      }
    });

  }

  private void setCurrentLocation() {
    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    Criteria criteria = new Criteria();
    provider = locationManager.getBestProvider(criteria, false);
    mLocation = locationManager.getLastKnownLocation(provider);

    if (mLocation != null) {
      mGeoPoint = new ParseGeoPoint();
      mGeoPoint.setLatitude(mLocation.getLatitude());
      mGeoPoint.setLongitude(mLocation.getLongitude());
      locationManager.removeUpdates(this);
    } else {
      mGeoPoint = new ParseGeoPoint(37.7833, -122.4167);
    }
  }

  @Override
  protected void onResume() {
    super.onResume();
    // locationManager.requestLocationUpdates(provider, 400, 1, this);
  }

  @Override
  protected void onPause() {
    super.onPause();
    // locationManager.removeUpdates(this);
  }

  private void populateListView() {
    lvMentors = (ListView) findViewById(R.id.lvMentors);
    mentorListAdapter = new MentorListAdapter(UserListActivity.this,
        mGeoPoint, mPersona.equals(Persona.MENTOR) ? Persona.MENTEE : Persona.MENTOR, mUserDisplayMode);
    ScaleInAnimationAdapter scaleInAnimationAdapter = new ScaleInAnimationAdapter(
        mentorListAdapter);
    scaleInAnimationAdapter.setAbsListView(lvMentors);
    lvMentors.setAdapter(scaleInAnimationAdapter);
    if (mPersona.equals(Persona.MENTOR)) {
      loadRequests(userId, true);
    } else {
      loadRequests(userId, false);
    }
    setupListViewClickListener();
    didChangeContentView();
  }

  private void loadRequests(final long userId, final boolean incoming) {
    getProgressBar().setVisibility(View.VISIBLE);
    DataService.getConnections(userId, new Runnable() {
      @Override
      public void run() {
        final List<User> users = User.getUsers(User.getUser(userId).getConnections(incoming));
        mentorListAdapter.addAll(users);
        if (mUserDisplayMode.equals(UserDisplayMode.CHAT)) {
          DataService.getConnections(userId, new Runnable() {
            @Override
            public void run() {
              final List<User> otherUsers = User.getUsers(User.getUser(userId).getConnections(!incoming));
              final ArrayList<User> newUsers = new ArrayList<User>();
              for (final User user : otherUsers) {
                if (!users.contains(user)) {
                  newUsers.add(user);
                }
              }
              mentorListAdapter.addAll(newUsers);
              getProgressBar().setVisibility(View.INVISIBLE);
            }
          }, !incoming);
        } else {
          getProgressBar().setVisibility(View.INVISIBLE);
        }
      }
    }, incoming);
  }

  private void setupListViewClickListener() {
    lvMentors.setOnItemClickListener(new OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> parent, View view,
          int position, long id) {
        final User user = (User) lvMentors.getItemAtPosition(position);
        if (mUserDisplayMode.equals(UserDisplayMode.CHAT)) {
          UIUtils.startChatSession(getActivity(), user.getFacebookId());
        } else {
          UIUtils.viewUserProfile(getActivity(), user.getFacebookId(), mGeoPoint);
        }
      }
    });
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.user_list, menu);
    return true;
  }

  @Override
  public void onBackStackChanged() {
    // TODO Auto-generated method stub

  }

  @Override
  public void onLocationChanged(Location location) {
    // TODO Auto-generated method stub

  }

  @Override
  public void onStatusChanged(String provider, int status, Bundle extras) {
    // TODO Auto-generated method stub

  }

  @Override
  public void onProviderEnabled(String provider) {
    // TODO Auto-generated method stub

  }

  @Override
  public void onProviderDisabled(String provider) {
    // TODO Auto-generated method stub

  }

}

Java Source Code List

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