RecyclerView: Kein Adapter angeschlossen; Layout überspringen während mit Retro-Fit zu holen JSON

Question

Ich benutze Retrofit zum Abrufen von JSON-Daten von REST API. Ich habe Retrofit implementiert, aber nach dem Start der App stürzt es mit einem Fehler ab: RecyclerView: No adapter attached; skipping layout. Ich benutze eine vorherige Antwort, aber keine von ihnen löst mein Problem. Hier ist mein Code:

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_cinsio_notif); 

    initViews(); 


private void initViews() { 
    recyclerView = (RecyclerView) findViewById(R.id.noti_recyle); 
    recyclerView.setHasFixedSize(true); 
    RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext()); 
    recyclerView.setLayoutManager(layoutManager); 
    loadJSON(); 
} 


private void loadJSON() { 
    Retrofit retrofit = new Retrofit.Builder() 
      .baseUrl("http://chikoop.com/api/index.php/") 
      .addConverterFactory(GsonConverterFactory.create()) 
      .build(); 
    notiIterface request = retrofit.create(notiIterface.class); 
    Call<JSONResponse> call = request.getNotification(userId, sessionId); 
    call.enqueue(new Callback<JSONResponse>() { 
     @Override 
     public void onResponse(Call<JSONResponse> call, Response<JSONResponse> response) { 
      JSONResponse jsonResponse = response.body(); 
      data = new ArrayList<>(Arrays.asList(jsonResponse.getAndroid())); 
      adapter = new noti_adapter(data, getApplicationContext()); 
      recyclerView.setAdapter(adapter); 
     } 

     @Override 
     public void onFailure(Call<JSONResponse> call, Throwable t) { 

     } 
    }); 
} 

Und mein xml-Code:

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@color/textColor"> 

    <include 
     android:id="@+id/custome_actionbar" 
     layout="@layout/cusmote_actionbar" 
     android:layout_width="match_parent" 
     android:layout_height="60dp" /> 

    <android.support.v7.widget.RecyclerView 
     android:id="@+id/noti_recyle" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_below="@+id/custome_actionbar"> 

    </android.support.v7.widget.RecyclerView> 
</RelativeLayout> 

-------------------------- ------->

Wenn jemand meinen Adapter Code benötigt:

List<noti_sec> noti_list; 
    private Context context; 

    //Constructor of this class 
    public noti_adapter(List<noti_sec> noti_list, Context context){ 
     super(); 
     //Getting all superheroes 
     this.noti_list = noti_list; 
     this.context = context; 
    } 


    public static class notiViewHolder extends RecyclerView.ViewHolder { 

     CircleImageView profile_pic; 
     TextView name; 
     TextView about_noti; 
     TextView noti_time; 
     ImageView from; 


     public notiViewHolder(View v) { 
      super(v); 
      profile_pic = (CircleImageView) v.findViewById(R.id.profile_image); 
      name = (TextView) v.findViewById(R.id.name); 
      about_noti = (TextView) v.findViewById(R.id.notif_about); 
      noti_time = (TextView) v.findViewById(R.id.noti_time); 
      from = (ImageView) v.findViewById(R.id.msg_img); 
     } 
    } 

    @Override 
    public noti_adapter.notiViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
     View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.noti_msg_screen, parent, false); 
     return new notiViewHolder(view); 
    } 

    @Override 
    public void onBindViewHolder(notiViewHolder holder, final int position) { 
     holder.profile_pic.setImageResource(R.drawable.border_frame1); 
     holder.name.setText(noti_list.get(position).getUsername()); 
     holder.about_noti.setText(noti_list.get(position).getNoti_msg()); 

     Picasso.with(context) 
       .load(image) 
       .into(holder.from); 
    } 


    @Override 
    public int getItemCount() { 
     return noti_list.size(); 
    } 

Fehlerprotokoll Katze:

02-15 20:12:16.247 13338-13338/com.release.chikoopapp E/RecyclerView: No adapter attached; skipping layout 
02-15 20:12:16.248 13338-13338/com.release.chikoopapp E/RecyclerView: No adapter attached; skipping layout 
02-15 20:12:16.406 13338-13338/com.release.chikoopapp D/AndroidRuntime: Shutting down VM 
02-15 20:12:16.415 13338-13338/com.release.chikoopapp E/AndroidRuntime: FATAL EXCEPTION: main 
                     Process: com.release.chikoopapp, PID: 13338 
                     java.lang.RuntimeException: Empty builders! 
                      at com.nightonke.boommenu.ExceptionManager.judge(ExceptionManager.java:71) 
                      at com.nightonke.boommenu.ExceptionManager.judge(ExceptionManager.java:27) 
                      at com.nightonke.boommenu.BoomMenuButton.doLayoutJobs(BoomMenuButton.java:346) 
                      at com.nightonke.boommenu.BoomMenuButton.access$600(BoomMenuButton.java:55) 
                      at com.nightonke.boommenu.BoomMenuButton$8.run(BoomMenuButton.java:1013) 
                      at android.os.Handler.handleCallback(Handler.java:739) 
                      at android.os.Handler.dispatchMessage(Handler.java:95) 
                      at android.os.Looper.loop(Looper.java:135) 
                      at android.app.ActivityThread.main(ActivityThread.java:5343) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at java.lang.reflect.Method.invoke(Method.java:372) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700) 

Answer 1

Das Setzen eines Adapters, sobald RecyclerView erstellt wird, kann dieses Problem verursachen. Da Sie die Daten herunterladen müssen, die angezeigt werden, können Sie einen Adapter mit einem leeren Dataset festlegen und die Daten später festlegen.

Eine Hilfsmethode wie die folgende kann verwendet werden, um einen weiteren Fehler bei der Benachrichtigung des Adapters über die Änderung im Dataset zu vermeiden.

public void resetRecyclerView(final List<noti_sec> data) { 
final Handler handler = new Handler(); 
handler.post(new Runnable() { 
    @Override 
    public void run() { 
     if (recyclerView.isComputingLayout()) { 
      handler.post(this); 
     } else { 
      noti_adapter adapter = (noti_adapter)recyclerView.getAdapter(); 
      adapter.setData(data);// custom method in your adapter 
      adapter.notifyDataSetChanged(); 
     } 
    } 
}); 
}