RecyclerView nicht über ein eigenes Feld in onBindViewHolder aktualisieren, nachdem notifydatasetchanged()

Question

Ich habe einen RecyclerView, in dem ich basierend auf einem Wert unterschiedliche Daten zu laden, die ich in einem update Verfahren bin zu ändern. Im Anschluss ist mein Code:

public class PerformanceAdapter extends RecyclerView.Adapter<PerformanceAdapter.ViewHolder> { 

ArrayList<Performance> list; 
Context ctx; 

int searchField; 

public PerformanceAdapter(ArrayList list, Context ctx) { 
    this.list = new ArrayList<>(); 
    this.list = list; 
    this.ctx = ctx; 
} 

public void updateList(ArrayList<Performance> list, int searchField) { 
    this.searchField = searchField; 
     ArrayList tempList = new ArrayList(); 
     tempList.addAll(list); 
     Log.i("saz","Size on notifyupdate: "+list.size()+" and searchField: "+this.searchField); 
     this.list.clear(); 
     this.list.addAll(tempList); 
     notifyDataSetChanged(); 
} 

@Override 
public PerformanceAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
    View v = LayoutInflater.from(parent.getContext()) 
      .inflate(R.layout.list_performance_cardview, parent, false); 
    // set the view's size, margins, paddings and layout parameters 

    searchField = viewType; 
    ViewHolder vh = new ViewHolder(v); 
    return vh; 
} 


@Override 
public void onBindViewHolder(PerformanceAdapter.ViewHolder holder, int position) { 
    /* position = (int) convertView.getTag(); 
    Log.i("saz","position value 2nd : "+position);*/ 
    Performance performance = this.list.get(position); 
Log.i("saz","searchField: "+searchField); 

    if (position%2 != 0) { 
     holder.cv.setCardBackgroundColor(ctx.getResources().getColor(R.color.lighter_gray)); 
    } else { 
     holder.cv.setCardBackgroundColor(ctx.getResources().getColor(R.color.white)); 
    } 

    Log.i("saz","searchField: "+searchField); 
    holder.txtModelName.setText(performance.getModelName()); 
    if (searchField == 0) { 
     holder.cv.setVisibility(View.GONE); 
    } else if (searchField == 1) { 
     Log.i("saz","searchField: "+searchField); 
     holder.cv.setVisibility(View.VISIBLE); 
     holder.cv2.setVisibility(View.GONE); 
     holder.cv3.setVisibility(View.GONE); 
     holder.cv4.setVisibility(View.GONE); 

    } else if (searchField == 2) { 
     holder.cv.setVisibility(View.VISIBLE); 
     holder.cv2.setVisibility(View.GONE); 
     holder.cv3.setVisibility(View.GONE); 
     holder.cv4.setVisibility(View.GONE); 
    } 
} 

@Override 
public int getItemViewType(int position) { 
    return searchField; 
} 

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

@Override 
public int getItemCount() { 
    Log.i("saz","List size in recycler: "+list.size()); 
    return this.list.size(); 
} 

Dann rufe ich

updateList(list, 0) 
updateList(list, 1) 
or updateList(list, 2) 

auf einen Klick.

Aber ich habe immer das Suchfeld als 0 in meinem bindViewHolder bekommen. Bitte helfen.

Answer 1

Sie es mit Viewtype überschrieben, das ist immer 0, da nur ein Typ ist.

@Override public 
PerformanceAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
    View v = LayoutInflater.from(parent.getContext()) 
     .inflate(R.layout.list_performance_cardview, parent, false); // set the view's size, margins, paddings and layout parameters 
    searchField = viewType; 
    ViewHolder vh = new ViewHolder(v); 
    return vh; 
}