CheckBox will uncheck and check when scrolling down the listview

Question

In my application I use this to count the checked checkbox in real time meaning when tick the box the count above will increase or decrease. but when scrolling down the listview

Answer 1

You have to maintain the list of selected checkbox and then set or unset the checkbox based on that list.

So let's say you have selectedcheckBox list which have the list of the selected checkbox.

ArrayList<> selectedcheckBox = new ArrayList<>();

So what you can do is:

lstdept.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView adapterView, View view, int i, long l) {
                if (view != null) {
                    selectedcheckBox.add(//Add item to the list)
                    CheckBox checkBox = (CheckBox) view.findViewById(R.id.list_view_item_checkbox);
                    checkBox.setChecked(!checkBox.isChecked());
                    if (!checkBox.isChecked()) {
                        test = test - 1 ;
                    } else {
                        test = test + 1 ;
                    }
                }
               getSupportActionBar().setTitle(country + "              Total Count: " + lstdept.getCount()+"       " + test);
            }

        });

And when you are populating the listView in your adapter, make a check with selectedcheckBox list. If the value is set in the list then set the checkbox else unset.

The reason why is this happening because listView recycles itself as it moves out of the view and becomes visible again. So all the values are set again as it becomes visible again. So one should maintain proper checks to inflate the view.