android handler传递数据

原由：在android使用get请求获取验证码时须要重开一个线程，这就形成了我没法获取到从服务器后台返回的数据

解决方法：建立全局变量，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

部分代码以下：

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，下面发连接  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，，再经过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，请从新测试！"); break; default: break; } super.handleMessage(msg); }