Update ListView background color when bluetooth get a new read

Question

I'm trying to update each element every time an read comes from the Bluetooth, I found this

deviceListAdapter = new ArrayAdapter<String>(view.getContext(),
            android.R.layout.simple_list_item_1, mylist) {
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View row = super.getView(position, convertView, parent);

               if(getItem(position).startsWith("something"))
                {
                    // do something change color
                    row.setBackgroundColor (Color.GREEN); // some color
                }
                else
                {
                    // default state
                    row.setBackgroundColor (Color.RED); // default coloe
                }               
            return row;
        }
    };

It does updates the color, but here is the thing I have a list like this one

The list is loaded through a call to a server with Volley.

The things is that when the Bluetooth receive data, check if he id exists in the ListView and update the color to green.

I this even possible? Any thoughts on this can I do this?

Answer 1

So I found what It was missing in the conditional to look if the id has being read.

I had to add testArray.contains() with that part it works as expected.

if(testArray.contains(getItem(position)))
    {
      row.setBackgroundColor (Color.GREEN); // some color
    }
    else
    {
      row.setBackgroundColor (Color.RED); // default coloe
    }
                   
    return row;

Answer 2

All you need to do is update the item in myList and then call deviceListAdapter.notifyDataSetChanged() to refresh the list views.