起因：在android使用get请求获取验证码时需要重开一个线程，这就造成了我无法获取到从服务器后台返回的数据
解决方法：创建全局变量，将返回的数据解析后返回给handler，再在handler中将数据赋值给全局变量
部分代码如下：
private void getYzm(int money) {
// TODO Auto-generated method stub
String res = "";
Date nowTime = new Date();
SimpleDateFormat time = new SimpleDateFormat("yyMMddHHmm");
String tel = PhoneUtils.getPhoneNumber(context);
final String paramData = "imsi=" + imsi + "&imei=" + imei + "&tel="
+ tel + "&money=" + money + "&app="
+ app+ "&time=" + time.format(nowTime);
String resultCode;
new Thread(){
public void run() {
final String gainCode = HttpRequest.sendGet(url,
paramData);
// url是请求验证码地址，是一个全局变量，这里没有列出来，paramData是请求参数，HttpRequest是一个工具类，下面发链接
String resultCode;
JSONObject dataJson;
String orderid;
try {
dataJson = new JSONObject(gainCode);
resultCode = dataJson.getString("resultCode");
orderid=dataJson.getString("orderid");
if("200000".equals(resultCode)){
msg = handler.obtainMessage();
Bundle bundle = new Bundle();
bundle.putString("orderid", orderid);// 将服务器返回的订单号传到Bundle中，，再通过handler传出
msg.setData(bundle);
msg.arg1 = 0; // 0为获取验证码成功
handler.sendMessage(msg);
}else{
msg = handler.obtainMessage();
msg.arg1 = 1; // -1为获取验证码失败
handler.sendMessage(msg);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}.start();
}
class MsgHandler extends Handler {
private Activity activity;
public MsgHandler(Activity activity){
this.activity=activity;
}
@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
switch (msg.arg1) {
case 0:
dialog.show();
Bundle bundle=msg.getData();
orderid=bundle.getString("orderid");// 这里的orderid是一个全局变量
break;
case 1:
showInfo("获取验证码失败！");
break;
case 2:
showInfo("订购成功！");
break;
case 3:
showInfo("提交验证码错误，请重新测试！");
break;
default:
break;
}
super.handleMessage(msg);
}