Textview resets to old value when scrolling up - android-listview

Question

I am creating a list view. I am populating the listview using custom adapter. In my listview there is a text view widget. When I reset the value of that text view it displays fine. Then, I scroll down to get new values into the listView. But when I scroll up the text view widget resets back to the old populated value.
How can I retain the new value set by me persistently?
Here is the code of my listview adapter class where I populate the values to my listview. I am clicking on imageview in the listview that fires the event to set new text value to the text view widget in the list view.
private class MyListAdapter extends ArrayAdapter<CommentInfo> {
public MyListAdapter()
{
super(Comment.this, R.layout.listview_xml, myComments);
}
#Override
public View getView(final int position, final View convertView, final ViewGroup parent)
{
itemView = convertView;
if(itemView == null)
{
itemView = getLayoutInflater().inflate(R.layout.listview_xml, parent, false);
}
CommentInfo currentComment = myComments.get(position);
TextView tvLikes = (TextView) itemView.findViewById(R.id.tvLikes);
tvLikes.setText(currentComment.likes);
ImageView ivLikes = (ImageView) itemView.findViewById(R.id.likeBtn);
ivLikes.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
likePosition = position;
TextView tvlikes1 = (TextView) convertView.findViewById(R.id.tvLikes);
// Here, i will get the correct value from DB and set it.
// I am setting 999 for sample purpose
tvlikes1.setText("999");
}
});
return itemView;
}
}
I reset the value of listview's text view by getting convertView value in getView() argument in my above adapter class and accessing my listview's textview widget through it. Then, i set it to value 999 (for example purpose). Now, I scroll down to get more new listView items. But, on scrolling up the new value (999) that i set to the old item disappears.
Please help me with it.

Answer 1

I have done a test myself. The ListView adapter will always take the values from the myComments list, so in order to update the TextView as you want, you have to do like this:
ivLikes.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
likePosition = position;
myComments.get(position).setLikes("999");//Assume that your CommentInfo's likes is a string.
notifyDataSetChanged();
}
});