When scrolling custom ListView, the checkbox value changes

Question

What I have: a custom listview with Textviews and checkbox.

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Problem: Suppose my screen can show only 6 items of list at time, and

Answer 1

You need to update the adapter to retain the value of checkbox

holder.chk.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                CheckBox c = (CheckBox)v.findViewById(R.id.chkID);
                Boolean chk = c.isChecked();
                Integer pos = (Integer)v.getTag();
                itemList.get(pos).setChk(chk);

            }
        });

For more help you can refer this post in Retain Checkbox value