spinner 下拉式選單

    private Spinner spinner;
    private String[] list = {"test1","test2","test3"};
    private ArrayAdapter<String> listAdapter;
    private Context mContext;


spinner=(Spinner)findViewById(R.id.spinner);
 mContext = this.getApplicationContext();


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

       spinner.setOnItemSelectedListener(new OnItemSelectedListener(){
           @Override
           public void onItemSelected(AdapterView<?> arg0, View arg1,int position, long arg3) {
              Toast.makeText(mContext, "你選的是"+list[position], Toast.LENGTH_SHORT).show();

           }
           @Override
           public void onNothingSelected(AdapterView<?> arg0) {
              // TODO Auto-generated method stub
           }