java.lang.IndexOutOfBoundsException: Invalid Index 1, Größe ist 1 in Sectored RecyclerView

Question

Ich bekomme diesen Fehler, wenn ich versuche, die aktuelle Position des Objekts in RecyclerView in Methode onClick() zu erhalten. Hier ist ein Fragment des Codes:

@Override 
    public void onClick(View v) { 
     if (v == btnAccept) { 
      int position    = (Integer) v.getTag(); 
      Notification notification = mNotifications.get(position); // Here is an error 
      mFragmentPageOne.acceptMembership(notification.getGroupId()); 
     } else if (v == btnDecline) { 

     } 
    } 

@Override 
public void onBindItemViewHolder(RecyclerView.ViewHolder holder, Notification item, @ViewType int viewType) { 
    NotificationHolder notificationHolder = (NotificationHolder) holder; 
    final int position = holder.getAdapterPosition(); 

    notificationHolder.tvNotification.setText(
       item.getNotification() + " ti je poslao zahtev za clanstvo u ekipu " 
      + item.getGroupName()); 
    long timestamp = DateUtil.getDifference(item.getTimestamp()); 
    // Converting timestamp into x ago format 
    CharSequence timeAgo = DateUtils.getRelativeTimeSpanString(
      Long.parseLong(String.valueOf(timestamp)), 
      System.currentTimeMillis(), DateUtils.SECOND_IN_MILLIS); 
    notificationHolder.tvTimestamp.setText(timeAgo); 

    notificationHolder.btnAccept.setTag(position); 
    notificationHolder.btnDecline.setTag(position); 

    setAnimation(notificationHolder.mRelativeLayout, position); 
} 

So versuche ich eine Position des aktuellen ausgewählten Objekts in der Liste zu finden. Diese Liste enthält auch einige Abschnitte. ich hier Daten auf das Array von Objekten einstellen:

try { 
    JSONObject obj = new JSONObject(response); 
    boolean error = obj.getBoolean("error"); 
    JSONArray ary = obj.getJSONArray("membership"); 
    if (!error) { 
     for (int i = 0; i < ary.length(); i++) { 
      JSONObject innerObj = ary.getJSONObject(i); 
      Notification notification = new Notification(); 
      notification.setNotification(innerObj.getString("name")); 
      notification.setTimestamp(innerObj.getString("createdAt")); 
      notification.setGroupId(innerObj.getInt("group_id")); 
      notification.setGroupName(innerObj.getString("group_name")); 
      notification.setCategory("Membership Requests"); 
      mNotificationList.add(notification); 
     } 

     mAdapter = new NotificationHeaderListAdapter(getActivity(), mNotificationList, FragmentPageOne.this); 
     LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false); 
     mRecyclerView.setLayoutManager(linearLayoutManager); 
     mRecyclerView.addItemDecoration(new HorizontalDividerItemDecoration(getActivity())); 
     mRecyclerView.setHasFixedSize(true); 
     mRecyclerView.setAdapter(mAdapter); 
    } 
} catch (JSONException e) { 
    e.printStackTrace(); 
} 

Das ganze Fehlerprotokoll:

Process: com.solaris.timster, PID: 4850 
java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1 
    at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255) 
    at java.util.ArrayList.get(ArrayList.java:308) 
    at com.solaris.timster.adapter.NotificationHeaderListAdapter$NotificationHolder.onClick(NotificationHeaderListAdapter.java:99) 
    at android.view.View.performClick(View.java:5697) 
    at android.widget.TextView.performClick(TextView.java:10814) 
    at android.view.View$PerformClick.run(View.java:22526) 
    at android.os.Handler.handleCallback(Handler.java:739) 
    at android.os.Handler.dispatchMessage(Handler.java:95) 
    at android.os.Looper.loop(Looper.java:158) 
    at android.app.ActivityThread.main(ActivityThread.java:7229) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 

Answer 1

Arraylisten in Java sind Null basiert. Versuchen Sie Notification notification = mNotifications.get(Position-1);

Answer 2

try this:

notificationHolder.checkParentView.setTag(itemsData.ge(position)); 
notificationHOlder.checkParentView.setOnClickListener(checkedListener); 
private View.OnClickListener checkedListener = new View.OnClickListener() { 
    @Override 
    public void onClick(View v) { 

     int positon = (Integer) v.getTag(); 
    } 
};