Wrong Item Return In View Holder Onclick Event

Im trying to lock button after user click button on costume list. the item of list fetched from hayoola and then i use viewholder to show data to user in list. if user click accep

Solution 1:

Hehe. Do you think that. Just "n/number of your records" view(s) will be created?

Assume that: If you have 100 records and 10 rows will be draw.

And 10 rows won't re-draw.

Button accept of row 1 is disabled that mean Button accept of row 11 + n is the same. :D

May be that's your problem.

And Please read this:

Let I tell you something about ViewHolder pattern.

When you load data to ListView or GridView or something like these.

If your data has 1000 records, ... The ListView doesn't load 1000 records. It's just load "n records". "n" is number of record which compatible with your screen device.

Example: n = 10.

When you scroll down, The ListView will load more data. In this case, each row (view of row) will re-draw.

And with ListView which has large data, when use scroll up or down, you will see your app will be slow... because view is re-drawing.

And ViewHolder is the pattern which help you solve that problem.

When you use ViewHolder pattern, Just "n" (in this example n = 10) views will be created.

So, In your problem. I can tell you that:

May be you are implemented ViewHolder is incorrect.

OK. Let I tell you about the solution.

if (convertView == null) {
   //You just findView and set for view
   // viewHolder = new ViewHolder();
   // viewHolder.yourBtn = convertView.findViewById(R.id.some_view_id);
   // convertView.setTag(viewHolder);  
} else {
   //Right here, you will get viewHolder, because convertView is not null. It mean the viewHolder is existed.
}

And right here, It mean every time you will set data (You won't cache data, just cache VIEW)

Assume that Your data is an object and object has property which stand for status of button.

MyObject {
  boolean objStatus;
}

and when you set data

viewHolder.yourBtn.setEnable(instanceOfMyObject.objStatus);