스피너 (Spinner)

    String[] groups = {"친구", "가족"};
...
    Spinner spinner = (Spinner) findViewById(R.id.spinner);
...
 
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, groups);
 
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
...
    spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
 
        @Override
        public void onItemSelected(<AdapterView<?> parent, View view, int position, long id) {
            Toast.makeText(getApplicationContext(), "선택된 아이템 인덱스 : " + position, Toast.LENGTH_LONG).show();
        }
 
        @Override
        public void onNothingSelected(AdapterView<?> parent) {
 
 
        }
    });