ViewHolder ArrayIndexOutOfBoundsException: length = 2; index = 2

Question

cerco di usare due tipi di visualizzazioni e due tipi di ViewHolrdes, ma l'errore ricevuto:

java.lang.ArrayIndexOutOfBoundsException: length=2; index=2 
     at android.widget.AbsListView$RecycleBin.addScrapView(AbsListView.java:6705) 
     at android.widget.AbsListView.trackMotionScroll(AbsListView.java:5210) 
     at android.widget.AbsListView$FlingRunnable.run(AbsListView.java:4368) 
     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:776) 
     at android.view.Choreographer.doCallbacks(Choreographer.java:579) 
     at android.view.Choreographer.doFrame(Choreographer.java:547) 
     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:762) 
     at android.os.Handler.handleCallback(Handler.java:800) 
     at android.os.Handler.dispatchMessage(Handler.java:100) 
     at android.os.Looper.loop(Looper.java:194) 
     at android.app.ActivityThread.main(ActivityThread.java:5371) 
     at java.lang.reflect.Method.invokeNative(Native Method) 
     at java.lang.reflect.Method.invoke(Method.java:525) 
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
     at dalvik.system.NativeStart.main(Native Method) 

E qui è il mio adattatore:

public class FriendsListAdapterFromKesh extends ArrayAdapter<FriendListEntryItem> { 
    List<FriendListEntryItem> friends; 
    List<FriendListEntryItem> friendsWithoutPoints; 
    Context context; 
    private LayoutInflater inflater; 
    private LayoutInflater mLayoutInflater; 
    private static String ROOT_DIRECTORY_PATH = Environment.getExternalStorageDirectory() + File.separator + ".SleepKeeker/Photos old"; 
    FriendsTab friendsTab; 

    public FriendsListAdapterFromKesh(Context context, final List<FriendListEntryItem> friends, final List<FriendListEntryItem> friendsWithoutPoints) { 
     super(context, 0); 
     this.context = context; 
     inflater = LayoutInflater.from(context); 
     this.friendsWithoutPoints = friendsWithoutPoints; 
     this.friends = friends; 
     friendsTab = new FriendsTab(); 
     mLayoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    } 

    public void updateList(List<FriendListEntryItem> newlist1, List<FriendListEntryItem> newlist2) { 
     friends.clear(); 
     friends.addAll(newlist1); 
     friendsWithoutPoints.clear(); 
     friendsWithoutPoints.addAll(newlist2); 
     this.notifyDataSetChanged(); 
    } 

    public List<FriendListEntryItem> getFriends() { 
     return friends; 
    } 

    @Override 
    public int getCount() { 
     return friends.size() + friendsWithoutPoints.size(); 
    } 

    public String getIdSocTypeName(int position) { 

     if (friends == null || position + 1 >= friends.size()) { 
      return ""; 
     } 
     FriendListEntryItem ei = friends.get(position - 1); 
     return ei.userId + "," + ei.socType + "," + ei.name; 
    } 

    static class ViewHolder1 { 
     public ImageView image = null; 
     public TextView title = null; 
     public TextView subtitle = null; 
    } 

    static class ViewHolder2 { 
     public ImageView image; 
     public TextView title; 
     public TypefacedButton button; 
    } 

    @Override 
    public int getItemViewType(int pos) { 
     if (pos < friends.size()) 
      return 1; 
     return 2; 
    } 

    //@TargetApi(Build.VERSION_CODES.JELLY_BEAN) 
    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     int viewType = getItemViewType(position); 
     ViewHolder1 viewHolder1 = null; 
     ViewHolder2 viewHolder2 = null; 
     if (convertView == null) { 
      if (viewType == 1) { 
       LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
       convertView = inflater.inflate(R.layout.list_frnds_item_with_points, parent, false); 
       viewHolder1 = new ViewHolder1(); 
       viewHolder1.title = (TextView) convertView.findViewById(R.id.list_item_title_friend); 
       viewHolder1.image = (ImageView) convertView.findViewById(R.id.imageFriendAva); 
       viewHolder1.subtitle = (TextView) convertView.findViewById(R.id.list_item_friend_woke_time); 
       convertView.setTag(viewHolder1); 
      } else { 
       LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
       convertView = inflater.inflate(R.layout.list_frnds_item_without_points, parent, false); 

       viewHolder2 = new ViewHolder2(); 
       viewHolder2.title = (TextView) convertView.findViewById(R.id.list_item_title_friend); 
       viewHolder2.image = (ImageView) convertView.findViewById(R.id.imageFriendAva); 
       viewHolder2.button = (TypefacedButton) convertView.findViewById(R.id.inviteButton); 
       viewHolder2.button.setClickListner(); 
       convertView.setTag(viewHolder2); 
      } 

     } else { 
      if (viewType == 1) { 
       viewHolder1 = (ViewHolder1) convertView.getTag(); 
      } else { 
       viewHolder2 = (ViewHolder2) convertView.getTag(); 
      } 
     } 
     if (viewType == 1) { 
      final FriendListEntryItem ei = friends.get(position); 
      viewHolder1.title.setText(ei.name); 
      viewHolder1.subtitle.setText(ei.wokeTime); 
      File picture = findPicture(ei.name); 
      if (picture != null && picture.exists()) { 
        Picasso.with(context).load("file://" + picture.getAbsolutePath()).fit().centerCrop().into(viewHolder1.image); 
      } 

     } else { 
       final FriendListEntryItem ei2 = friendsWithoutPoints.get(position - friends.size()); 
       viewHolder2.title.setText(ei2.name); 
       viewHolder2.button.setFriendItem(ei2); 
       File picture = findPicture(ei2.name); 
       if (picture != null && picture.exists()) { 
        Picasso.with(context).load("file://" + picture.getAbsolutePath()).fit().centerCrop().into(viewHolder2.image); 
       } 
     } 
     return convertView; 
    } 
    @Override 
    public int getViewTypeCount() { 
     return 2; 
    } 

    private File findPicture(String name) { 
     File root = new File(ROOT_DIRECTORY_PATH); 
     if (root!= null) 
     { 
      File[] files = root.listFiles(); 
      if (files == null) 
       return null; 

      for (int i = 0; i<files.length; i++) { 
       Log.d("qedsds", "" + files[i].getName()); 
       if (files[i].getName().contains(name)) 
        return files[i]; 
      } 
     } 
     return null; 
    } 
} 

errore appare quando ho scorrere la elenco. Ma non riesco a capire perché. Ho passato un sacco di tempo già per risolvere questo problema, ma senza alcun risultato

Answer 1

Sostituire

@Override 
public int getItemViewType(int pos) { 
    if (pos < friends.size()) 
     return 1; 
    return 2; 
} 

da

@Override 
public int getItemViewType(int pos) { 
    if (pos < friends.size()) 
     return 0; 
    return 1; 
} 

Da the Adapter documentation for the method getItemViewType (il corsivo è mio):

Returns

An integer representing the type of View. Two views should share the same type if one can be converted to the other in getView(int, View, ViewGroup). Note: Integers must be in the range 0 to getViewTypeCount() - 1. IGNORE_ITEM_VIEW_TYPE can also be returned.

Al momento, si stanno restituendo i valori 1 e 2 per la vista t ipo. Devi invece restituire i valori 0 e 1 per soddisfare la condizione in grassetto.