List控件的使用1

public void onCreate(Bundle savedInstanceState) {
??????? super.onCreate(savedInstanceState);
??????? setContentView(R.layout.main);
??????? ArrayList<HashMap<String,String>> list=new ArrayList<HashMap<String,String>>();
??????? HashMap<String,String> map1=new HashMap<String,String>();
??????? HashMap<String,String> map2=new HashMap<String,String>();
??????? HashMap<String,String> map3=new HashMap<String,String>();
??????? HashMap<String,String> map4=new HashMap<String,String>();
??????? map1.put("user_name", "cheng");
??????? map1.put("user_ip", "127.0.0.1");
??????? map2.put("user_name", "chengqing");
??????? map2.put("user_ip", "127.0.0.2");
??????? map3.put("user_name", "chengh");
??????? map3.put("user_ip", "127.0.0.3");
??????? map4.put("user_name", "chengf");
??????? map4.put("user_ip", "127.0.0.4");
??????? list.add(map1);
??????? list.add(map2);
??????? list.add(map3);
??????? list.add(map4);
??????? SimpleAdapter listAdapter=new SimpleAdapter(this,list,R.layout.user,new String[]{"user_name","user_ip"},new int[]{R.id.user_name,R.id.user_ip});
??????? setListAdapter(listAdapter);
??? }