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