Question

I have a class for the row, it extends RelativeLayout and inflates some layout to self. A CheckBox checked state listener is also set.

public class LayersListRow extends RelativeLayout {         

  public LayersListRow (Context context, final GITuple tuple) {
    super(context);
    LayoutInflater.from(context).inflate(R.layout.layers_list_item, this, true);
        ...

    CheckBox checkbox = (CheckBox)findViewById(R.id.layers_list_item_switch);

    checkbox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
        public void onCheckedChanged (CompoundButton buttonView, boolean isChecked) {
        ...
        }
    });
  }
    ...
}

I have a custom ArrayAdapter, which is filled with some objects of this class. I want to use them as the view too.

public class LayersAdapter extends ArrayAdapter<LayersListRow> {

    @Override
    public View getView (int position, View convertView, ViewGroup parent) {
        return getItem(position);
    }

    public LayersAdapter (Context context, int resource, int textViewResourceId) {
        super(context, resource, textViewResourceId);
    }
}

But when I set this adapter to my ListView the CheckBox‘s listener doesn’t work. But for the items which appears on scroll down, it works fine.

If I replace return getItem(position); in the getView method with

if (null == convertView)
  return getItem(position);

return convertedView;

then for all items visible at first in the list listener works great, but when I try to scroll I get wrong item (the first one again), ListView freezes and don’t respond.

Why is this happening and how should I make it work properly?

Answer 1

When you use this

if (null == convertView)
  return getItem(position);

return convertedView;

The view are reused. Hence when you scroll the views that where first shown will again be shown.

I would recommend you to see the answer I have written in this post. If you cannot follow it put a comment down here.

Get checked Listitems from ListView and pass that to another activity