在 Runnable 中使用 notifyDataSetChanged 进行ListView刷新问题

Question

Runnable listview

Answer 1

这样试试：
public class TestListView extends Activity {
    Button btnlist;
    static ArrayList<HashMap<String, Object>> listItem = new ArrayList<HashMap<String, Object>>();
    static SimpleAdapter listItemAdapter;
    Handler handler;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //绑定Layout里面的ListView
        ListView list = (ListView) findViewById(R.id.ListView01);
        btnlist = (Button) findViewById(R.id.button1);
         
        handler = new Handler(){
 @Override
        public void handleMessage(Message msg) {
            if (msg.what ==1) {
                  listItemAdapter.notifyDataSetChanged();
            }
        }
};
         
        btnlist.setOnClickListener(new OnClickListener(){
 
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                for(int i=0;i<10;i++)
                {
                    HashMap<String, Object> map = new HashMap<String, Object>();
                    map.put("ItemImage", R.drawable.checked);//图像资源的ID
                    map.put("ItemTitle", "Level "+i);
                    map.put("ItemText", "Finished in 1 Min 54 Secs, 70 Moves! ");
                    listItem.add(map);
                   new listMessageUpdate().start();
                    
                }
                
            }
             
        });
         
        //生成动态数组，加入数据
         
        
        //生成适配器的Item和动态数组对应的元素
        listItemAdapter = new SimpleAdapter(this,listItem,//数据源 
            R.layout.list_items,//ListItem的XML实现
            //动态数组与ImageItem对应的子项        
            new String[] {"ItemImage","ItemTitle", "ItemText"}, 
            //ImageItem的XML文件里面的一个ImageView,两个TextView ID
            new int[] {R.id.ItemImage,R.id.ItemTitle,R.id.ItemText}
        );
        
        //添加并且显示
        list.setAdapter(listItemAdapter);       
 
    }
     
    static Thread listMessageUpdate =new Thread(){
         @Override
         public void run() {
             Message msg = new Message();
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            msg.what =1;
            handler.sendMessage(msg);
         }
          
     };
     
}