How to change textView in list item on Button click

Question

I want to change my quantity textview to reflect the quantity of a particular item. But on clicking the add and sub buttons, the setText() function does not seem to work. Here i

Answer 1

You have to just call notifyDataSetChanged(); after add and sub button click code.

For Add

add.setOnClickListener(new OnClickListener() {
            @Override 
            public void onClick(View v) {
                // TODO Auto-generated method stub  
                quant[position]=quant[position]+1;
                count1 +=1;
                //holder.number.setText(Integer.toString(quant[position]));
                holder.number.setText(count1.toString());
                Toast.makeText(context, Integer.toString(quant[position]), Toast.LENGTH_SHORT).show();
                Log.d("Quantity",Integer.toString(quant[position]));
                positiveNumbers.put(holder.uniqueKey,count); //Key -> String.valueOf(position) and Value -> int count

                notifyDataSetChanged();
            } 
        }); 

For Sub

sub.setOnClickListener(new OnClickListener() {
            @Override 
            public void onClick(View v) {
                // TODO Auto-generated method stub 
                quant[position]--;
                Toast.makeText(context, Integer.toString(quant[position]), Toast.LENGTH_SHORT).show();
                holder.number.setText(Integer.toString(quant[position]));
                positiveNumbers.put(holder.uniqueKey,count);   //Key -> String.valueOf(position) and Value -> int count

               notifyDataSetChanged();
            } 
        });

Hope it's help !!