notifyDataSetChanged不工作？

Question

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(); 

当结果出现在数组列表中时，即数值仍然是微调框仍然是空的？

Answer 1

notifyDataSetChanged()需要从一个UI线程调用。尝试使用AsyncTask。

Answer 2

可能这将有利于 android:how to Reload the ArrayAdapater Class in Check/uncheck event of ListView's Chekbox?