In Android, I want to use a Spinner that initially (when the user has not
made a selection yet) displays the text "Select One". When the user clicks
the spinner, the list of items is displayed and the user selects one of the
options. After the user has made a selection, the selected item is
displayed in the Spinner instead of "Select One".

I have the following code to create a Spinner:

String[] items = new String[] {"One", "Two", "Three"};
Spinner spinner = (Spinner) findViewById(R.id.mySpinner);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_spinner_item, items);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_it em);
spinner.setAdapter(adapter);

With this code, initially the item "One" is displayed. I could just add a
new item "Select One" to the items, but then "Select One" would also be
displayed in the dropdown list as first item, which is not what I want.

Any ideas? Thanks in advance.