ANdroid nicht benutzerdefinierten Adapter anzeigen

Question

Ich arbeite über eine vtc app und ich muss auf dem Hauptbildschirm die Aufträge des Kunden anzeigen. Ich wählte die Art der Anpassung der Listenansicht mit einem Adapter, aber wenn ich die App nicht auf dem Bildschirm mit Ausnahme des Titels der Seite starten. Ich habe den Adaptercode und den Fragmentcode geteilt (ja, ich arbeite in einem Fragment) und ich möchte Ihre Meinung zu meinem Code haben. Hier wird das Fragment:

package com.cmn.cmnvtc; 

     import android.Manifest; 
    import android.app.Dialog; 
    import android.app.Fragment; 
    import android.content.Context; 
    import android.content.Intent; 
    import android.content.pm.PackageManager; 
    import android.location.Location; 
    import android.net.Uri; 
    import android.os.Build; 
    import android.os.Bundle; 
    import android.provider.Settings; 
    import android.support.annotation.NonNull; 
    import android.support.annotation.Nullable; 
    import android.support.design.widget.Snackbar; 
    import android.support.v4.app.ActivityCompat; 
    import android.view.LayoutInflater; 
    import android.view.View; 
    import android.view.ViewGroup; 
    import android.widget.AdapterView; 
    import android.widget.ArrayAdapter; 
    import android.widget.Button; 
    import android.widget.LinearLayout; 
    import android.widget.ListView; 
    import android.widget.RelativeLayout; 
    import android.widget.TextView; 
    import android.widget.Toast; 

    import com.android.volley.RequestQueue; 
    import com.android.volley.Response; 
    import com.android.volley.toolbox.Volley; 
    import com.google.android.gms.common.ConnectionResult; 
    import com.google.android.gms.common.GoogleApiAvailability; 
    import com.google.android.gms.common.api.GoogleApiClient; 
    import com.google.android.gms.location.LocationListener; 
    import com.google.android.gms.location.LocationRequest; 
    import com.google.android.gms.location.LocationServices; 
    import com.google.android.gms.maps.CameraUpdate; 
    import com.google.android.gms.maps.CameraUpdateFactory; 
    import com.google.android.gms.maps.GoogleMap; 
    import com.google.android.gms.maps.MapFragment; 
    import com.google.android.gms.maps.OnMapReadyCallback; 
    import com.google.android.gms.maps.model.LatLng; 
    import com.google.android.gms.maps.model.Marker; 
    import com.google.android.gms.maps.model.MarkerOptions; 

    import org.json.JSONException; 
    import org.json.JSONObject; 

    import java.util.ArrayList; 
    import java.util.List; 


    public class MainPageFragment1 extends Fragment implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener{ 

     private LinearLayout containerView; 
     private TextView NoCommand; 
     private UserLocalStore userLocalStore; 
     private List<Courses> coursesList; 
     private ListView lvCourses; 
     private CoursesAdapter coursesAdapter; 
     @Override 
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
      View v = inflater.inflate(R.layout.fragment_main1, container, false); 
      userLocalStore = new UserLocalStore(getActivity()); 
      NoCommand = (TextView) v.findViewById(R.id.NoCommand); 
      lvCourses = (ListView) v.findViewById(R.id.lvCourses); 
      coursesList = new ArrayList<>(); 
      final Response.Listener<String> responseListener = new Response.Listener<String>(){ 


       @Override 
       public void onResponse(String response) { 
        try { 
         JSONObject jsonObject = new JSONObject(response); 
         boolean success = jsonObject.getBoolean("success"); 
         if(success){ 
          int count = jsonObject.getInt("count"); 

          for(int i=0; i<count; i++) { 

           JSONObject obj = jsonObject.getJSONObject(String.valueOf(i)); 
           String origin = obj.getString("origin"); 
           String destination = obj.getString("destination"); 
           String date_depart = obj.getString("date_depart"); 
           String heure_depart = obj.getString("heure_depart"); 
           int nb_passagers = Integer.parseInt(obj.getString("nb_passagers")); 
           float prix = Float.parseFloat(obj.getString("prix")); 
           String mode_paiement = obj.getString("paiement"); 
           String etat_paiement = obj.getString("course_payee"); 


           Courses course = new Courses(origin, destination, date_depart, heure_depart, nb_passagers, prix 
           , mode_paiement, etat_paiement); 
           coursesList.add(course); 
          } 

         }else{ 
          NoCommand.setEnabled(true); 
          NoCommand.setText("Oups... Vous n'avez commandé aucune course pour le moment."); 
         } 

        } catch (JSONException e) { 
         e.printStackTrace(); 
        } 

       } 
      }; 
      User currentUser = userLocalStore.getLoggedInUser(); 
      final GetAllCourseRequest getAllCourse = new GetAllCourseRequest(currentUser.user_id,responseListener); 
      RequestQueue queue = Volley.newRequestQueue(getActivity()); 
      queue.add(getAllCourse); 

      coursesAdapter = new CoursesAdapter(getActivity(), coursesList); 
      lvCourses.setAdapter(coursesAdapter); 
      lvCourses.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
       @Override 
       public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
        Toast.makeText(getActivity(), "CLicked", Toast.LENGTH_SHORT).show(); 
       } 
      }); 


      if (googleServicesAvailable()) { 
       containerView = (LinearLayout) v.findViewById(R.id.containerView); 
       askForPermission(); 
      } 

      return v; 
     } 

     public boolean googleServicesAvailable() { 
      GoogleApiAvailability api = GoogleApiAvailability.getInstance(); 
      int isAvaibable = api.isGooglePlayServicesAvailable(getActivity()); 
      if (isAvaibable == ConnectionResult.SUCCESS) { 
       return true; 
      } else if (api.isUserResolvableError(isAvaibable)) { 
       Dialog dialog = api.getErrorDialog(getActivity(), isAvaibable, 0); 
       dialog.show(); 
      } else { 
       Toast.makeText(getActivity(), "Can't connect to play services", Toast.LENGTH_SHORT).show(); 
      } 
      return false; 
     } 

     private void explain() { 
      Snackbar.make(containerView, "Cette permission est nécessaire pour vous géolocalisez", Snackbar.LENGTH_LONG).setAction("Activer", new View.OnClickListener() { 
       @Override 
       public void onClick(View view) { 
        askForPermission(); 
       } 
      }).show(); 
     } 
     private void askForPermission() { 
      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
       requestPermissions(new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION, android.Manifest.permission.ACCESS_COARSE_LOCATION}, 2); 
      } 
     } 
     @Override 
     public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) { 
      if (requestCode == 2) { 
       if (grantResults[0] == PackageManager.PERMISSION_GRANTED) { 
       } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
        if (shouldShowRequestPermissionRationale(permissions[0]) == false) { 
         displayOptions(); 
        } else { 
         explain(); 
        } 
       } 
       if (grantResults[1] == PackageManager.PERMISSION_GRANTED) { 
       } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
        if (shouldShowRequestPermissionRationale(permissions[1]) == false) { 
         displayOptions(); 
        } else { 
         explain(); 
        } 
       } 
      } 
      super.onRequestPermissionsResult(requestCode, permissions, grantResults); 
     } 
     private void displayOptions() { 
      Snackbar.make(containerView, "Vous avez désactivé la permission", Snackbar.LENGTH_LONG).setAction("Paramètres", new View.OnClickListener() { 
       @Override 
       public void onClick(View view) { 
        final Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS); 
        final Uri uri = Uri.fromParts("package", getActivity().getPackageName(), null); 
        intent.setData(uri); 
        startActivity(intent); 
       } 
      }).show(); 
     } 

     @Override 
     public void onConnected(@Nullable Bundle bundle) { 

     } 

     @Override 
     public void onConnectionSuspended(int i) { 

     } 

     @Override 
     public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { 

     } 
    } 

Meine benutzerdefinierten Adapter:

package com.cmn.cmnvtc; 

import android.content.Context; 
import android.text.TextWatcher; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.ImageButton; 
import android.widget.TextView; 

import org.w3c.dom.Text; 

import java.util.List; 

/** 
* Created by Wild Shadow on 18/06/2017. 
*/ 
public class CoursesAdapter extends BaseAdapter { 

    private List<Courses> coursesList; 
    private Context ctx; 


    public CoursesAdapter(Context context, List<Courses> coursesList) { 
     this.ctx = context; 
     this.coursesList = coursesList; 
    } 

    @Override 
    public int getCount() { 
     return coursesList.size(); 
    } 

    @Override 
    public Object getItem(int position) { 
     return coursesList.get(position); 
    } 

    @Override 
    public long getItemId(int position) { 
     return position; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     View v = View.inflate(ctx, R.layout.row_courses, null); 
     TextView adrOrigin = (TextView) v.findViewById(R.id.adrOriginList); 
     TextView adrDestinaiton = (TextView) 
v.findViewById(R.id.adrDestList); 
     TextView dateDepart = (TextView) v.findViewById(R.id.dateDepList); 
     TextView heureDepart = (TextView) 
v.findViewById(R.id.heureDepList); 

     ImageButton viewDetails = (ImageButton) 
     v.findViewById(R.id.viewDetailsCourse); 

     adrOrigin.setText(coursesList.get(position).getOrigin()); 
     adrDestinaiton.setText(coursesList.get(position).getDestination()); 
     dateDepart.setText(coursesList.get(position).getDate_depart()); 
     heureDepart.setText(coursesList.get(position).getHeure_depart()); 

     return v; 
    } 
} 

das Modell Layout:

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:orientation="vertical" 
android:padding="6dp"> 

    <LinearLayout 
     android:orientation="vertical" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content"> 

     <LinearLayout 
      android:orientation="horizontal" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:layout_marginBottom="5dp"> 

      <ImageView 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:src="@drawable/ic_depart_courselist"/> 

      <TextView 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:id="@+id/adrOriginList" 
       android:textSize="17dp" 
       android:textColor="#000" 
       android:paddingTop="3dp" 
       android:text=" : Adresse de départ"/> 

     </LinearLayout> 

     <LinearLayout 
      android:orientation="horizontal" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content"> 

      <ImageView 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:src="@drawable/ic_destination_courselist"/> 

      <TextView 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:id="@+id/adrDestList" 
       android:paddingTop="3dp" 
       android:textColor="#000" 
       android:textSize="17dp" 
       android:text=" : Adresse d'arrivée" 
       android:layout_marginBottom="5dp"/> 

     </LinearLayout> 

     <LinearLayout 
      android:orientation="horizontal" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content"> 

      <ImageView 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:src="@drawable/ic_date_depart_courselist"/> 

      <TextView 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:id="@+id/dateDepList" 
       android:paddingTop="3dp" 
       android:textColor="#000" 
       android:textSize="17dp" 
       android:text=" : date de départ" 
       android:layout_marginBottom="3dp" 
       android:layout_marginRight="20dp"/> 

      <ImageView 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:src="@drawable/ic_heure_dep_courselist"/> 

      <TextView 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:id="@+id/heureDepList" 
       android:paddingTop="3dp" 
       android:textColor="#000" 
       android:textSize="17dp" 
       android:text=" : Heure" 
       android:layout_marginBottom="3dp"/> 

      <ImageButton 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:src="@drawable/ic_details_courselist" 
       android:layout_marginLeft="65dp" 
       android:id="@+id/viewDetailsCourse" 
       android:paddingTop="5dp" 
       android:background="?android:selectableItemBackground"/> 

     </LinearLayout> 



    </LinearLayout> 
</LinearLayout> 

und der Listenansicht:

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingTop="10dp" 
    android:theme="@style/AppTheme" 
    tools:context="com.cmn.cmnvtc.MainPageFragment1"> 

    <RelativeLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_gravity="center_horizontal"> 
     <TextView 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:textAlignment="center" 
      android:id="@+id/TitleListCommand" 
      android:textSize="25dp" 
      android:layout_marginBottom="15dp" 
      android:textColor="#727574" 
      android:text="Liste de mes courses "/> 

     <ListView 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/TitleListCommand" 
      android:layout_alignParentStart="true" 
      android:id="@+id/lvCourses"></ListView> 

     <TextView 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_marginTop="200dp" 
      android:textColor="#969696" 
      android:layout_marginLeft="20dp" 
      android:layout_marginRight="20dp" 
      android:textSize="15dp" 
      android:textAlignment="center" 
      android:id="@+id/NoCommand" 
      android:text="" 
      android:enabled="false"/> 


    </RelativeLayout> 


</ScrollView> 

Ich hoffe, Sie helfen ich zu f Ind der Fehler und wenn Sie mehr wollen, versuchen Sie mir zu erklären, wie ich meinen Code optimieren kann. TY

Answer 1

Sie sollten notifyDataSetChanged() im ResponseListener nach dem Auffüllen Ihrer Liste aufrufen.

  @Override 
      public void onResponse(String response) { 
       try { 
        JSONObject jsonObject = new JSONObject(response); 
        boolean success = jsonObject.getBoolean("success"); 
        if(success){ 
         int count = jsonObject.getInt("count"); 

         for(int i=0; i<count; i++) { 
          ... 
          coursesList.add(course); 
         } 
         //notify adapter about change in data 
         coursesAdapter.notifyDataSetChanged(); 
        }else{ 
         NoCommand.setEnabled(true); 
         NoCommand.setText("Oups... Vous n'avez commandé aucune course pour le moment."); 
        } 

       } catch (JSONException e) { 
        e.printStackTrace(); 
       } 

      } 
     };