实现的功能就是远程注册登录后，跳转到首页，首页显示欢迎信息，并把服务器从数据库取回的数据以json格式返回，并显示在listview上，登录用户的代码是参考一位坛友的本地注册登录的实例。

服务器端：server.php

< php
include('dbconfig.php');

$address = $_POST['address'];
$longitude = $_POST['longitude'];
$latitude = $_POST['latitude'];

if(empty($address) or empty($longitude) or empty($latitude)){
die("You have to fill all the fields!");
}
$conn = mysql_connect($server,$username,$password);
if(!$conn){
die("connection failed:".mysql_error());
}

mysql_select_db($dbName,$conn);

$query = "insert into ".$tableName." values(NULL,'".$address."',".$longitude.",".$latitude.",'".date('Y-m-d H:i:s',time())."');";
$result = mysql_query($query,$conn);
if(!$result){
die("mysql error:".mysql_error());
}

echo "add information to database sucessfullly!";
>