public void doUnAttTask(final Father host) {
    if (mUser != null) {
      String cancelId = "";
      AsyncHttpClient asyncHttpClient = new AsyncHttpClient();
      RequestParams params = new RequestParams();
      params.put("uid", mUser.getUid());
      params.put("token", mUser.getToken());
      for (int i = 0; i < hostAtts.size(); i++) {
        Host hosts = hostAtts.get(i);
        if (hosts.getUid().equals(host.getUid())) {
          cancelId = hosts.getHostAttId();
          break;
        }
      }
      params.put("cancleId", cancelId);
      asyncHttpClient.post(
          AppConstants.PAY_HOST_UNATTE,
          params,
          new AsyncHttpResponseHandler() {
            @Override
            public void onStart() {
              super.onStart();
              mDialog = Utils.showProgressDialog(TraceHostSeeActivity.this, "操作中……");
              mDialog.show();
            }

            @Override
            public void onSuccess(String content) {
              super.onSuccess(content);
              mDialog.dismiss();
              if (content != null) {
                JSONObject jsonObject;
                try {
                  jsonObject = new JSONObject(content);
                  boolean success = jsonObject.getBoolean("success");
                  if (success == true) {
                    Utils.MakeToast(getApplicationContext(), "取消成功");
                    getHostAtt();
                  } else {
                    String message = jsonObject.optString("msg");
                    Utils.MakeToast(getApplicationContext(), message);
                  }
                } catch (Exception e) {
                  e.printStackTrace();
                }
              }
            }

            @Override
            public void onFailure(Throwable error, String content) {
              super.onFailure(error, content);
              mDialog.dismiss();
              Utils.MakeToast(getApplicationContext(), "网络连接超时");
            }
          });
    } else {
      Utils.MakeToast(getApplicationContext(), "请先登录");
    }
  }
 public boolean hasAtten(Father host) {
   for (int i = 0; i < hostAtts.size(); i++) {
     Host host2 = hostAtts.get(i);
     if (host2.getUid().equals(host.getUid())) {
       return true;
     }
   }
   return false;
 }