Android Spinner 下拉列表

private Spinner spinner ;

        private List<String> list ;

        private ArrayAdapter<String> arrayAdapter ;

        @Override

        protected void onCreate(Bundle savedInstanceState) {

               super.onCreate(savedInstanceState);

              setContentView(R.layout. activity_main);

               spinner=(Spinner) findViewById(R.id. spinner1);

               list= new ArrayList<String>();

               //NEW arrayAdapter适配器

               arrayAdapter=new ArrayAdapter<String>(this ,android.R.layout.simple_spinner_dropdown_item, list);

               //adapter设置下拉列表样式

               arrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

               spinner.setAdapter( arrayAdapter);

               //设置监听器

               spinner.setOnItemSelectedListener( new OnItemSelectedListener() {

                      @Override

                      public void onItemSelected(AdapterView<?> parent, View view,

                                   int position, long id) {

                           

                     }

                      @Override

                      public void onNothingSelected(AdapterView<?> arg0) {

                           

                     }

              });

              

       }