title: Slider Menu disappears when I start new activity
body: <p>This is my main Activity that defines my slider menu and its fragments</p>
  
  <pre><code>import java.util.ArrayList;
  import android.app.Activity;
  import android.app.Fragment;
  import android.app.FragmentManager;
  import android.content.res.Configuration;
  import android.content.res.TypedArray;
  import android.os.Bundle;
  import android.support.v4.app.ActionBarDrawerToggle;
  import android.support.v4.widget.DrawerLayout;
  import android.util.Log;
  import android.view.Menu;
  import android.view.MenuItem;
  import android.view.View;
  import android.widget.AdapterView;
  import android.widget.ListView;
  
  public class MainActivity extends Activity {
  private DrawerLayout mDrawerLayout;
  private ListView mDrawerList;
  private ActionBarDrawerToggle mDrawerToggle;
  
  // nav drawer title
  private CharSequence mDrawerTitle;
  
  // used to store app title
  private CharSequence mTitle;
  
  // slide menu items
  private String[] navMenuTitles;
  private TypedArray navMenuIcons;
  
  private ArrayList&lt;NavDrawerItem&gt; navDrawerItems;
  private NavDrawerListAdapter adapter;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
  
      mTitle = mDrawerTitle = getTitle();
  
      // load slide menu items
      navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);
  
      // nav drawer icons from resources
      navMenuIcons = getResources()
              .obtainTypedArray(R.array.nav_drawer_icons);
  
      mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
      mDrawerList = (ListView) findViewById(R.id.list_slidermenu);
  
      navDrawerItems = new ArrayList&lt;NavDrawerItem&gt;();
  
      // adding nav drawer items to array
      // Home
      navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));
      // Find People
      navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1)));
      // Photos
      navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1)));
      // Communities, Will add a counter here
      navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1), true, "22"));
      // Pages
      navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1)));
      // What's hot, We  will add a counter here
      navDrawerItems.add(new NavDrawerItem(navMenuTitles[5], navMenuIcons.getResourceId(5, -1), true, "50+"));
  
  
      // Recycle the typed array
      navMenuIcons.recycle();
  
      mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
  
      // setting the nav drawer list adapter
      adapter = new NavDrawerListAdapter(getApplicationContext(),
              navDrawerItems);
      mDrawerList.setAdapter(adapter);
  
      // enabling action bar app icon and behaving it as toggle button
      getActionBar().setDisplayHomeAsUpEnabled(true);
      getActionBar().setHomeButtonEnabled(true);
  
      mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
              R.drawable.ic_drawer, //nav menu toggle icon
              R.string.app_name, // nav drawer open - description for accessibility
              R.string.app_name // nav drawer close - description for accessibility
      ) {
          public void onDrawerClosed(View view) {
              getActionBar().setTitle(mTitle);
              // calling onPrepareOptionsMenu() to show action bar icons
              invalidateOptionsMenu();
          }
  
          public void onDrawerOpened(View drawerView) {
              getActionBar().setTitle(mDrawerTitle);
              // calling onPrepareOptionsMenu() to hide action bar icons
              invalidateOptionsMenu();
          }
      };
      mDrawerLayout.setDrawerListener(mDrawerToggle);
  
      if (savedInstanceState == null) {
          // on first time display view for first nav item
          displayView(0);
      }
  }
  
  /**
   * Slide menu item click listener
   * */
  private class SlideMenuClickListener implements
          ListView.OnItemClickListener {
      @Override
      public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position,
              long id) {
          // display view for selected nav drawer item
          displayView(position);
      }
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
      getMenuInflater().inflate(R.menu.main, menu);
      return true;
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
      // toggle nav drawer on selecting action bar app icon/title
      if (mDrawerToggle.onOptionsItemSelected(item)) {
          return true;
      }
      // Handle action bar actions click
      switch (item.getItemId()) {
      case R.id.action_settings:
          return true;
      default:
          return super.onOptionsItemSelected(item);
      }
  }
  
  /* *
   * Called when invalidateOptionsMenu() is triggered
   */
  @Override
  public boolean onPrepareOptionsMenu(Menu menu) {
      // if nav drawer is opened, hide the action items
      boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
      menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
      return super.onPrepareOptionsMenu(menu);
  }
  
  /**
   * Diplaying fragment view for selected nav drawer list item
   * */
  private void displayView(int position) {
      // update the main content by replacing fragments
      Fragment fragment = null;
      switch (position) {
      case 0:
          fragment = new HomeFragment();
          break;
      case 1:
          fragment = new FindPeopleFragment();
          break;
      case 2:
          fragment = new PhotosFragment();
          break;
      case 3:
          fragment = new CommunityFragment();
          break;
      case 4:
          fragment = new PagesFragment();
          break;
      case 5:
          fragment = new WhatsHotFragment();
          break;
  
      default:
          break;
      }
  
      if (fragment != null) {
          FragmentManager fragmentManager = getFragmentManager();
          fragmentManager.beginTransaction()
                  .replace(R.id.frame_container, fragment).commit();
  
          // update selected item and title, then close the drawer
          mDrawerList.setItemChecked(position, true);
          mDrawerList.setSelection(position);
          setTitle(navMenuTitles[position]);
          mDrawerLayout.closeDrawer(mDrawerList);
      } else {
          // error in creating fragment
          Log.e("MainActivity", "Error in creating fragment");
      }
  }
  
  @Override
  public void setTitle(CharSequence title) {
      mTitle = title;
      getActionBar().setTitle(mTitle);
  }
  
  /**
   * When using the ActionBarDrawerToggle, you must call it during
   * onPostCreate() and onConfigurationChanged()...
   */
  
  @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 toggls
      mDrawerToggle.onConfigurationChanged(newConfig);
  }
  
  }
  </code></pre>
  
  <p>Now when I open my next intent from HomeFragment my slider menu disappears which I'd want to stay constant. Here is my code for the intent that I am opening</p>
  
  <pre><code>public class Station extends ListActivity{
  
  ListView listview;  
  String[] station={"a","b","c","d","e"};
  String[] time={"02:30","05:30","11:40","99","99"};
  
  @Override
      protected void onCreate(Bundle savedInstanceState) {
          // TODO Auto-generated method stub
          super.onCreate(savedInstanceState);
          setContentView(R.layout.station);
  
          //new request().execute();
          listview=getListView();
           final CustomList adapter=new CustomList(this, station,time);
           listview.setAdapter(adapter);
      }
  protected void onListItemClick(ListView l, View v, int position, long id) {
      // TODO Auto-generated method stub
      super.onListItemClick(l, v, position, id);
      Intent i= new Intent("com.xx.yy.RESTAURANT");
      startActivity(i);
  }
  </code></pre>
  
  <p>How do I keep the slider menu constant since I might want to change fragments at some point</p>