ArrayList valforspinner=new ArrayList();
ArrayAdapter<String> adapter=null;
spinner = (Spinner) findViewById(R.id.Spinner01);
adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, Printers);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
new Thread(new Runnable() {
public void run() {
valforspinner= GetList.List(myPrefs.getString("IP", ""));
adapter.notifyDataSetChanged();
}}).start();
当结果以数组列表的形式出现时,即使有值,下拉选择框仍然为空吗?