android handler傳遞資料

標籤：

起因：在android使用get請求擷取驗證碼時需要重開一個線程，這就造成了我無法擷取到從伺服器後台返回的資料

解決方案：建立全域變數，將返回的資料解析後返回給handler，再在handler中將資料賦值給全域變數

部分代碼如下：

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是請求驗證碼地址，是一個全域變數，這裡沒有列出來，paramData是請求參數，HttpRequest是一個工具類，下面發連結                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);// 將伺服器返回的訂單號傳到Bundle中，，再通過handler傳出                        msg.setData(bundle);                        msg.arg1 = 0;   // 0為擷取驗證碼成功                        handler.sendMessage(msg);                    }else{                        msg = handler.obtainMessage();                        msg.arg1 = 1;  // -1為擷取驗證碼失敗                        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");// 這裡的orderid是一個全域變數                break;             case 1:                  showInfo("擷取驗證碼失敗！");                  break;            case 2:                  showInfo("訂購成功！");                  break;            case 3:                  showInfo("提交驗證碼錯誤，請重新測試！");                  break;              default:                  break;              }              super.handleMessage(msg);        }    

 

android handler傳遞資料