How to update a ListView from a MultiChoiceAdapter library?

Question

I'm trying to implement this example from this MultiChoiceAdapter library.

It looks perfect so far. The only thing that I changed is the ListView height and added a Button after such ListView.

Now, my idea with that Button is to update the adapter. For that, I created the following method:

private void updateData(Bundle savedInstanceState){
    List<String> items = Arrays.asList("Item1", "Item2", "Item3", "Item4");
    adapter = null;
    adapter = new ComplexItemLayoutAdapter(savedInstanceState, items);
    adapter.notifyDataSetChanged();
}

At the end, it did not work. I tried following this answer, but it did not work because this example does not extend ArrayAdapter.

What can I do to update this kind of adapter?

Many thanks.

Answer 1

Created one method in ComplexItemLayoutAdapter named setData(List<String> items) and set these items to existing data.

And change your method implementation

    private void updateData(Bundle savedInstanceState){
        List<String> items = Arrays.asList("Item1", "Item2", "Item3", "Item4");
        adapter = null;
        adapter = new ComplexItemLayoutAdapter(savedInstanceState, items);
        adapter.notifyDataSetChanged();
    }

to

    private void updateData(){
        List<String> items = Arrays.asList("Item1", "Item2", "Item3", "Item4");
        adapter.setData(items);
        listView.setAdapter(adapter);
        adapter.notifyDataSetChanged();
    }