Как добавить динамический текстовый просмотр в адаптер просмотра recycler?

Question

Я хочу добавить динамический текст в адаптера recycliewiew, когда элемент выбран. Но динамическое представление добавляется в другое представление, и когда я просматриваю recyclerview, динамически созданный вид изменяется каждый раз в этом представлении. Это мой адаптер класс

public class MultiSelectRecyclerViewAdapter SelectableAdapter<MultiSelectRecyclerViewAdapter.ViewHolder> { 

private static List<Ingredient> mArrayList; 
private static Context mContext; 
private ViewHolder.ClickListener clickListener; 

static ImageView add_img; 
static ImageView remove_img; 
static TextView textView_count; 
RelativeLayout relativeLayout; 
static boolean flag = false; 
static HashMap<String,TextView> mTextViewList = new HashMap<>(); 
private ViewHolder mViewHolder; 

public MultiSelectRecyclerViewAdapter (Context context, List<Ingredient> arrayList, ViewHolder.ClickListener clickListener) { 
    this.mArrayList = arrayList; 
    this.mContext = context; 
    this.clickListener = clickListener; 
} 

// Create new views 
@Override 
public MultiSelectRecyclerViewAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, 
                 int viewType) { 

    View itemLayoutView = LayoutInflater.from(parent.getContext()).inflate(
      R.layout.cardview_toppings, null); 

    ViewHolder viewHolder = new ViewHolder(itemLayoutView,clickListener); 
    this.mViewHolder = viewHolder; 

    return viewHolder; 
} 

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1) 
@Override 
public void onBindViewHolder(final ViewHolder viewHolder, int position) { 

    if(isSelected(position)) 
    { 
     Ion.with(mContext).load(mArrayList.get(position).getThumbnail()).withBitmap().asBitmap() 
       .setCallback(new FutureCallback<Bitmap>() { 
        @Override 
        public void onCompleted(Exception e, Bitmap result) { 
         viewHolder.thumbnail.setImageBitmap(result); 
        } 
       }); 

     viewHolder.textView.setText(mArrayList.get(position).getIngredient_name()); 

     viewHolder.textView_count.getId(); 

     for (Map.Entry<String, TextView> entry : mTextViewList.entrySet()) { 
       entry.getValue().setVisibility(isSelected(position) ? View.VISIBLE : View.GONE); 
      entry.getValue().setBackgroundResource(R.drawable.badge_circle); 
     } 

    }else { 
     Ion.with(mContext).load(mArrayList.get(position).getThumbnail()).withBitmap().asBitmap() 
       .setCallback(new FutureCallback<Bitmap>() { 
        @Override 
        public void onCompleted(Exception e, Bitmap result) { 
         viewHolder.thumbnail.setImageBitmap(result); 
        } 
       }); 

     viewHolder.textView.setText(mArrayList.get(position).getIngredient_name()); 
    } 
} 

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

public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener,View.OnLongClickListener { 
     public TextView tvName; 
     private ClickListener listener; 
     private final View selectedOverlay; 

     public ImageView thumbnail; 
     public RelativeLayout relativeLayout; 
     public TextView textView; 
     public RelativeLayout dynamic_relativeLayout; 
     public TextView textView_count; 

     public ViewHolder(View itemLayoutView, ClickListener listener) { 
      super(itemLayoutView); 

      this.listener = listener; 

      tvName = (TextView) itemLayoutView.findViewById(R.id.bottom_name); 
      selectedOverlay = (View) itemLayoutView.findViewById(R.id.selected_overlay); 

      thumbnail = (ImageView) itemLayoutView.findViewById(R.id.thumbnail); 
      textView = (TextView) itemLayoutView.findViewById(R.id.bottom_name); 
      relativeLayout = (RelativeLayout) itemView.findViewById(R.id.thumbnail_relative); 
      dynamic_relativeLayout = (RelativeLayout) itemView.findViewById(R.id.dynamic_layout); 

      textView_count = new TextView(mContext); 


      itemLayoutView.setOnClickListener(this); 

      itemLayoutView.setOnLongClickListener (this); 
     } 

     @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1) 
     @Override 
     public void onClick(View v) { 
      if (listener != null) { 

       flag = true; 
      setImagePerview(mArrayList.get(getAdapterPosition()).getPreview(), mContext); 
     int id = View.generateViewId(); 

     textView_count.setId(id); 
     RelativeLayout.LayoutParams params_text = new RelativeLayout.LayoutParams(50, 50); 
     params_text.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, RelativeLayout.TRUE); 
     textView_count.setLayoutParams(params_text); 
     textView_count.setBackgroundResource(R.drawable.badge_circle); 
     textView_count.setGravity(Gravity.CENTER); 
     mTextViewList.put(String.valueOf(id),textView_count); 
     relativeLayout.addView(textView_count); 

       listener.onItemClicked(getAdapterPosition()); 

      } 
     } 
     @Override 
     public boolean onLongClick (View view) { 
      if (listener != null) { 
       return listener.onItemLongClicked(getAdapterPosition()); 
      } 
      return false; 
     } 

     public interface ClickListener { 
      public void onItemClicked(int position); 

      public boolean onItemLongClicked(int position); 
     } 
     } 
    } 

Answer 1

this is a common issues as you need to sync access to the holder. There are a few quite good libraries to handle this and other cases of bitmap caching, reusing, pooling. 

вы можете использовать скольжение для локальных и сетевых изображений:

**Glide.with(context).load(items.get(i).getImage()).into(viewHolder.image);** 

или только для сетевых изображений Volley или Jus swithing их NetworkImageView виджета, а затем в адаптере :

Они могут использовать разные подходы, но все они знают, что делать