Wie ändere ich den Titel in der Navigationsschublade

Question

Ich möchte, dass der Titel im Menü wird durch den Namen des Fragments, klicken wurde geändert. Für den Code darunter, was ich bekomme, ist der tatsächliche Titel in jedem Fragment "Home" und es ändert sich nicht. aber ich habe festgestellt, dass, wenn ich auf einen Gegenstand im Menü klicke, der Titel sich für eine Sekunde ändert und zum Titel "Home" zurückkehrt. Ich habe den Auflader implementiert, aber ich weiß nicht, was das verursachen könnte.

mein 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)&& 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<NameValuePair> nameValuePairList = new ArrayList<NameValuePair>(); 
     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<?> 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(); 
    }*/ 
} 

Answer 1

Ok ich das Problem gefunden, war die Antwort gut und ich wirklich den Titel jedes Mal aus dem Fragment, aber ich brauche zusätzlich zu ändern zu deaktivieren diese Zeile:

getSupportActionBar().setTitle(mDrawerTitle); 

vom onDrawerOpened und onDrawerClosed

Answer 2

Set es für alle Fragment. Das sollte die Arbeit machen !!

Answer 3

Setzen Sie den Titel nicht auf ActionBar, setzen Sie den Titel auf Aktivität, Sie können dies aus der Aktivität oder dem Fragment tun. Für Aktivität:

setTitle("New Title"); 

oder Fragment:

getActivity().setTitle("New Title"); 

Answer 4

versuchen Sie dies:

@Override 
public void onResume() { 
    super.onResume(); 

    ((AppCompatActivity) getActivity()).getSupportActionBar().setTitle("Your Title"); 
} 

Answer 5

diese

getActivity().setTitle("title"); 

Fügen Sie diese Zeile aus Drawer Aktivität unterhalb entfernen

in Ihrem Fragment hinzufügen

getActivity().setTitle("title");