view only specific items in grid view android

Question

Hey I am trying to view specific items in the grid view which have an id less than 100. This is my adapter class but for some reason its not working and displays all the items. Logged in the id's and they are all fine.

public View getView(int position, View convertView, ViewGroup parent) {
    PreviousViewHolder holder = null;
    ServerFeed previousDayRank = getItem(position);

    LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
    if (convertView == null) {
        if (previousDayRank.getId() < 100) {
            convertView = layoutInflater.inflate(R.layout.popular_discover_list_item, null);
            holder = new PreviousViewHolder(convertView);
            convertView.setTag(holder);
        } else {
            convertView = layoutInflater.inflate(R.layout.null_item, null);
            holder = new PreviousViewHolder(convertView);
            convertView.setTag(holder);
        }

    } else {

        holder = (PreviousViewHolder) convertView.getTag();
        holder.setImageUrl(getContext(), previousDayRank.getName(), previousDayRank.getId());
    }
    return convertView;

}

I have tried varieos links link1 link2 but they didn't really help

you can filter your dataset before setting it to adapter because adapter will populate views as much your data count which invoked in getItemCount — Pavan, May 22 '17 at 12:02
It showed all the items. in and not just the one's with less the id 100 @YuvaanChauhan — Saransh Agarwal, May 22 '17 at 12:02

score 0 · Answer 1 · answered May 22 '17 at 12:06

Change your getView method like this

    public View getView(int position, View convertView, ViewGroup parent)                {
        PreviousViewHolder holder = null;
        ServerFeed previousDayRank = getItem(position);

        LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
        if (convertView == null) {           
 convertView = layoutInflater.inflate(R.layout.popular_discover_list_item, null);
                holder = new PreviousViewHolder(convertView);
                convertView.setTag(holder);
            } else {

                holder = (PreviousViewHolder)convertView.getTag();

            }

        if(previousDayRank.getId() < 100){
        holder.setImageUrl(getContext(), previousDayRank.getName(), previousDayRank.getId());}
       return convertView;
    }

hey your code worked it does not show the those items but it still has those items which were meant to be removed they are just not visible — Saransh Agarwal, May 22 '17 at 13:19

Roma Heshten · Answer 2 · 2017-05-22T12:15:40.257

0

Just filter your data before passing to addapter. Just like that:

for(ServerFeed item : mServerFeeds){if(item.getId() > 100) mServerFeeds.remove(item);}

edited May 22 '17 at 12:15

answered May 22 '17 at 12:09

Roma Heshten

46
5

Yuvaan Chauhan · Answer 3 · 2017-05-23T06:58:47.817

0

call this method in your code-

public int getItemPosition(long id)
{
for (int position=0; position<100; position++)
    if (mList.get(position).getId() == id)
        return position;
return 0;
}

edited May 23 '17 at 06:58

answered May 23 '17 at 06:47

Yuvaan Chauhan

344
1
3
12

view only specific items in grid view android

3 Answers3