title: how to change the Title in Navigation Drawer
body: <p>I would like that the title in the menu will change by the fragment name that was click. for the code below what i get is that, the actual title in each fragment is "Home" and its does not change. but i found that when i click on an item in the menu the title changing for a second and return back to the "Home" title. i implemented the ondrawer but still i don't know what could cause that.</p>
  
  <p>my code:</p>
  
  <pre><code> package com.example.matant.gpsportclient;
  
  import android.app.Fragment;
  import android.app.FragmentManager;
  import android.app.ProgressDialog;
  import android.content.res.Configuration;
  import android.os.Bundle;
  import android.support.v4.app.ActionBarDrawerToggle;
  import android.support.v4.widget.DrawerLayout;
  import android.support.v7.app.AppCompatActivity;
  import android.util.Log;
  import android.view.MenuItem;
  import android.view.View;
  import android.widget.AdapterView;
  import android.widget.ListView;
  import android.widget.Toast;
  
  import com.example.matant.gpsportclient.Controllers.Fragments.CreateEventFragmentController;
  import com.example.matant.gpsportclient.Controllers.DBcontroller;
  import com.example.matant.gpsportclient.Controllers.Fragments.GoogleMapFragmentController;
  import com.example.matant.gpsportclient.Controllers.Fragments.ManageEventFragmentController;
  import com.example.matant.gpsportclient.Controllers.Fragments.ProfileFragmentController;
  import com.example.matant.gpsportclient.InterfacesAndConstants.AsyncResponse;
  import com.example.matant.gpsportclient.InterfacesAndConstants.Constants;
  import com.example.matant.gpsportclient.Utilities.DrawerItem;
  import com.example.matant.gpsportclient.Utilities.DrawerItemCustomAdapter;
  import com.example.matant.gpsportclient.Utilities.SessionManager;
  
  import org.apache.http.NameValuePair;
  import org.apache.http.message.BasicNameValuePair;
  import org.json.JSONException;
  import org.json.JSONObject;
  
  import java.util.ArrayList;
  import java.util.List;
  
  
  public class MainScreen extends AppCompatActivity implements AsyncResponse {
  
      private String[] mNavigationDrawerItemTitles;
      private DrawerLayout mDrawerLayout;
      private ListView mDrawerList;
      ActionBarDrawerToggle mDrawerToggle;
      private CharSequence mDrawerTitle;
      private CharSequence mTitle;
      private DBcontroller dbController;
      private ProgressDialog progress = null;
      private SessionManager sm;
  
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main_screen);
  
          if (getIntent().getBooleanExtra("EXIT", false)) {
              finish();
              return;
          }
  
          mNavigationDrawerItemTitles= getResources().getStringArray(R.array.navigation_drawer_items_array);
          mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
          mDrawerList = (ListView) findViewById(R.id.left_drawer);
  
          sm = SessionManager.getInstance(this);
  
          mTitle = mDrawerTitle = "Home";
          DrawerItem [] drawerItems = new DrawerItem[Constants.MENU_SIZE];
          drawerItems[0] = new DrawerItem(R.drawable.home,"Home");
          drawerItems[1] = new DrawerItem(R.drawable.profile,"Profile");
          drawerItems[2] = new DrawerItem(R.drawable.search,"Search Events");
          drawerItems[3] = new DrawerItem(R.drawable.create,"Create Event");
          drawerItems[4] = new DrawerItem(R.drawable.manage,"Manage Event");
          drawerItems[5] = new DrawerItem(R.drawable.attending,"Attending List");
          drawerItems[6] = new DrawerItem(R.drawable.recent_search_24,"Recent Searches");
          drawerItems[7] = new DrawerItem(R.drawable.logout,"Log Out");
  
          DrawerItemCustomAdapter adapter = new DrawerItemCustomAdapter(this, R.layout.listview_item_row, drawerItems);
          mDrawerList.setAdapter(adapter);
          mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
          mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
          mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,R.drawable.ic_menu, R.string.drawer_open, R.string.drawer_close) {
  
              /** Called when a drawer has settled in a completely closed state. */
              public void onDrawerClosed(View view) {
                  super.onDrawerClosed(view);
                  getSupportActionBar().setTitle(mDrawerTitle);
                  invalidateOptionsMenu();
              }
  
              /** Called when a drawer has settled in a completely open state. */
              public void onDrawerOpened(View drawerView) {
                  super.onDrawerOpened(drawerView);
                  getSupportActionBar().setTitle(mDrawerTitle);
                  invalidateOptionsMenu();
              }
          };
  
          mDrawerLayout.setDrawerListener(mDrawerToggle);
  
          getSupportActionBar().setDisplayHomeAsUpEnabled(true);
          getSupportActionBar().setHomeButtonEnabled(true);
          getSupportActionBar().setHomeAsUpIndicator(R.drawable.ic_menu);
          getSupportActionBar().setTitle(mNavigationDrawerItemTitles[0]);
  
          if (savedInstanceState == null) {
              // on first time display view for first nav item
              selectItem(0);
          }
  
      }
  
      @Override
      protected void onSaveInstanceState(Bundle outState) {
          super.onSaveInstanceState(outState);
      }
  
      @Override
      public void handleResponse(String resStr) {
          try
          {
              if((this.progress!= null )&amp;&amp; this.progress.isShowing())
              {
                  this.progress.dismiss();
              }
          }catch (final IllegalArgumentException e){
              Log.d("Dialog error",e.getMessage());
          }catch (final Exception e){
              Log.d("Dialog error",e.getMessage());
          }
              finally {
              this.progress = null;
          }
  
          Log.d("handleResponse", resStr);
          if(resStr!=null)
          {
              try {
                  JSONObject jsonObj = new JSONObject(resStr);
                  String flg = jsonObj.getString(Constants.TAG_FLG);
                  switch (flg) {
                      case "user logged out":
                      {
                          sm.logoutUser();
                          break;
                      }
                      case "query failed": {
                          Toast.makeText(getApplicationContext(),"Error Connection",Toast.LENGTH_LONG).show();
                          break;
                      }
  
                  }
              } catch (JSONException e) {
                  e.printStackTrace();
              }
          }
  
      }
  
      @Override
      public void sendDataToDBController() {
  
          String user = sm.getUserDetails().get(Constants.TAG_EMAIL);
          BasicNameValuePair tagReq = new BasicNameValuePair("tag","logout");
          BasicNameValuePair userNameParam = new BasicNameValuePair("username",user);
          List&lt;NameValuePair&gt; nameValuePairList = new ArrayList&lt;NameValuePair&gt;();
          nameValuePairList.add(tagReq);
          nameValuePairList.add(userNameParam);
          dbController =  new DBcontroller(this,this);
  
          dbController.execute(nameValuePairList);
  
      }
  
      @Override
      public void preProcess() {
          this.progress = ProgressDialog.show(this, "Log Out",
                  "Logging out...", true,false);
      }
  
      private class DrawerItemClickListener implements ListView.OnItemClickListener {
  
          @Override
          public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) {
              selectItem(position);
          }
      }
  
      private void selectItem(int position) {
  
          Fragment fragment = null;
  
          switch (position) {
              case 0: //Home
                  fragment = new GoogleMapFragmentController();
                  break;
              case 1: //Profile
                  fragment = new ProfileFragmentController();
                  break;
              case 2: //Search Events
                  //fragment = new SearchEventFragmentController();
                  break;
              case 3: //Create Events
                  fragment = new CreateEventFragmentController();
                  break;
              case 4: //Manage Events
                  fragment = new ManageEventFragmentController();
                  break;
              case 5: //Attending List
                  //fragment = new AttendingListFragmentController();
                  break;
              case 6: //Recent Searches
                  //fragment = new RecentSearchesFragmentController();
                  break;
              case 7: { //Log Out
                  logout();
                  finish(); //destroy the main activity
              }
                  break;
  
              default:
                  break;
          }
  
          if (fragment != null) {
              FragmentManager fragmentManager = getFragmentManager();
              fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
              mDrawerList.setItemChecked(position, true);
              mDrawerList.setSelection(position);
              getSupportActionBar().setTitle(mNavigationDrawerItemTitles[position]);
              mDrawerLayout.closeDrawer(mDrawerList);
          } else {
              Log.e("MainActivity", "Error in creating fragment");
          }
      }
  
      @Override
      public boolean onOptionsItemSelected(MenuItem item) {
  
          if (mDrawerToggle.onOptionsItemSelected(item)) {
              return true;
          }
  
          return super.onOptionsItemSelected(item);
      }
  
      @Override
      public void setTitle(CharSequence title) {
          mTitle = title;
          getSupportActionBar().setTitle(mTitle);
      }
  
      @Override
      protected void onPostCreate(Bundle savedInstanceState) {
          super.onPostCreate(savedInstanceState);
          // Sync the toggle state after onRestoreInstanceState has occurred.
          mDrawerToggle.syncState();
      }
  
      @Override
      public void onConfigurationChanged(Configuration newConfig) {
          super.onConfigurationChanged(newConfig);
          // Pass any configuration change to the drawer toggles
          mDrawerToggle.onConfigurationChanged(newConfig);
      }
      public void logout()
      {
  
          sendDataToDBController();
      }
      /*@Override
      protected void onDestroy() {
          super.onDestroy();
          logout();
      }*/
  }
  </code></pre>