Question

( i have image in res/drawable, the name of image in database)
I’ve done to display image from res/drawable to listview, but images appear same picture..
i want display difference image from the others….

how to change image id from drawable folder (using setImageResource()). My drawable folder contains more than 1 image and i want to change these images using name in database already stored..

here is my code from tutorial…

//the result from database (image2.jpg)

public KontakItemListBaseAdapter(Context context, ArrayList<KontakItemDetails> results) {
    itemDetailsrrayList = results;
    l_Inflater = LayoutInflater.from(context);
}

public int getCount() {
    return itemDetailsrrayList.size();
}

public Object getItem(int position) {
    return itemDetailsrrayList.get(position);
}

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

public View getView(int position, View convertView, ViewGroup parent) {
    try{
    ViewHolder holder;
    if (convertView == null) {
        convertView = l_Inflater.inflate(R.layout.kontak_details_view, null);
        holder = new ViewHolder();
        holder.txt_itemName = (TextView) convertView.findViewById(R.id.name);
        holder.txt_itemDescription = (TextView) convertView.findViewById(R.id.itemDescription);
        holder.itemImage = (ImageView) convertView.findViewById(R.id.photo);
        convertView.setTag(holder);
    } else {
        holder = (ViewHolder) convertView.getTag();
    }

    holder.txt_itemName.setText(itemDetailsrrayList.get(position).getName());
    holder.txt_itemDescription.setText(itemDetailsrrayList.get(position).getItemDescription());


    holder.itemImage.setImageResource(R.drawable.iddy);

    }catch (Exception ex) {
        throw new Error("kontakitemlistadapter :"+ex.toString());

    }
    return convertView;
}

static class ViewHolder {
    TextView txt_itemName;
    TextView txt_itemDescription;
    TextView txt_itemPrice;
    ImageView itemImage;
}

i think my problem is here..

holder.itemImage.setImageResource(R.drawable.iddy);

how to change R.drawable.iddy to be path name??

Answer 1

you can get all Drawables id’s in an Arrays as :

private Integer[] images;

Field[] list = R.drawable.class.getFields();
int count = 0, index = 0, j = list.length;

images = new Integer[count];
try {
   for(int i=0; i < j; i++)
    images[index++] = list[i].getInt(null);
 } catch(Exception e) {}

now use images Array for setting Image src in getView method of Adapter as:

holder.itemImage.setImageResource(images[position]);