Android and iOs tips

Question

I m working with BaseAdapter class and i get an ClassCastException error in getView method when i try to cast my viewHolder class.

Here is my code:


public View getView(int position, View convertView, ViewGroup parent){
            // TODO Auto-generated method stub
            NoteItem noteItem = list.get(position);
            TextView tv;
            LinearLayout ll;
            if(convertView == null){
                convertView = inflater.inflate(R.layout.dialog_listitem_note, null);
                ll = (LinearLayout) convertView.findViewById(R.id.llNote);
                tv = (TextView) convertView.findViewById(R.id.tvNoteItem);
                convertView.setTag(new NoteItemViewHolder(tv, ll));
                ll.setOnClickListener(new OnClickListener(){...});
            }else{
                NoteItemViewHolder viewHolder = (NoteItemViewHolder) convertView.getTag(); //ClassCastException error here
                ll = viewHolder.getLl();
                tv = viewHolder.getName();
            }
            tv.setText(noteItem.getName());
            ll.setTag(noteItem);
            ...
            return convertView;
        }  

private class NoteItemViewHolder{

    TextView name;
    LinearLayout ll;

    public NoteItemViewHolder(TextView name, LinearLayout ll){
        this.name = name;
        this.ll = ll;
    }

    public TextView getName(){
        return name;
    }

    public LinearLayout getLl(){
        return ll;
    }       
}

Dont get why this error occurs, please help.

Answer 1 · 2013-04-16 10:24:27Z

getView method should Like below and Also Check Your Control Like LinearLayout is bind with R.id.yourLinearID


  public View getView(int position, View view, ViewGroup parent) {
        // TODO Auto-generated method stub
        ViewHolder holder;
        if(view == null)
        {
            view = inflater.inflate(R.layout.checkin_item, null);
            holder =  new ViewHolder();

            holder.iconImage = (ImageView)view.findViewById(R.id.chkin_item_iv);
            holder.placeName = (TextView)view.findViewById(R.id.chkin_item_tv_name);
            holder.placeAddress = (TextView)view.findViewById(R.id.chkin_item_tv_address);
            holder.placeKm = (TextView)view.findViewById(R.id.chkin_item_tv_0);             

            view.setTag(holder);
        }
        else
        {
            holder = (ViewHolder)view.getTag();
        }

        try

            if(googleSetGetArray.getGoogleSetGets().get(position).getName().length() != 0)
            {
                holder.placeName.setText(googleSetGetArray.getGoogleSetGets().get(position).getName());
            }
            else
            {
                holder.placeName.setText(mContext.getString(R.string.mfitem_lbl_namenotpresent));
            }
            if(googleSetGetArray.getGoogleSetGets().get(position).getVicinity() != null && googleSetGetArray.getGoogleSetGets().get(position).getVicinity().length() != 0)
            {
                holder.placeAddress.setText(googleSetGetArray.getGoogleSetGets().get(position).getVicinity());
            }
            else
            {
                holder.placeAddress.setText(mContext.getString(R.string.mfitem_lbl_addressnotpresent));
            }
            if(googleSetGetArray.getGoogleSetGets().get(position).getDistance() != 0.0f)
            {
                holder.placeKm.setText(Float.toString(googleSetGetArray.getGoogleSetGets().get(position).getDistance()));
            }
            else
            {
                holder.placeKm.setText(Float.toString(0.0f));
            }
        }catch(Exception ex)
        {
            ex.printStackTrace();
        }           


        imageLoader.DisplayImage(data[position], holder.iconImage);
        return view;
    }

    class ViewHolder
    {
        ImageView iconImage;
        TextView placeName;
        TextView placeAddress;
        TextView placeKm;

    }

Android and iOs tips

Tuesday, April 16, 2013

[android help] ClassCastException error, dont know why it occurs

No comments:

Post a Comment

Google Voice on T-Mobile? [General]

Blogroll