Android : How to Increment a number, in listView when clicking on Button

I'm new to Android, and i'm developing an application where users can like or dislike a post, when the user dislikes the post likes number-- if the user likes number++.

the problem is that when I press the button it works, but it doesn't work for some other items, and when I scroll down or up I lose the info, and it will be mixed all over the other items

I'm using an adapter view for my list view which look like this :

public adapter(Context context, ArrayList<statisticitem> questionaires) {
   super(context, 0, questionaires);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
   
   final statisticitem c = getItem(position);    
   

   if (convertView == null) {
      convertView = LayoutInflater.from(getContext()).inflate(R.layout.custom, parent, false);

   }
   
   TextView text1 = (TextView) convertView.findViewById(R.id.textView1);
   final TextView text2 = (TextView) convertView.findViewById(R.id.textView2);
   TextView text3 = (TextView) convertView.findViewById(R.id.textView3);
   ImageView like = (ImageView) convertView.findViewById(R.id.imageView1);
   
   
   text1.setText(c.getIdQuestion());
   
   like.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                
                   likes++;
        
                   text2.setText("likes :"+likes);
                    
                   
                }
 });




   return convertView;
}

}

the Main Activity where I have the Listview :

ListView list1 = (ListView) findViewById(R.id.listView1);
  lists  = new ArrayList<statisticitem>();
  for (int i=0;i<10;i++) {  
  statisticitem s = new statisticitem();
  s.setIdQuestion("Question"+i);
  lists.add(s);
  }

    adapter adapter = new adapter(MainActivity.this, (ArrayList<statisticitem>) lists);
    list1.setAdapter(adapter);


}