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将值更新到数据库时，不是每次更新 1 行（这是我们想要的），而是更新整个数据库列。这是我的代码：

Java代码：

  private Dialog alertDialog() {          final AlertDialog.Builder

alertDialog = new AlertDialog.Builder(NotificationActivity.this);

              // Setting Dialog Title
              alertDialog.setTitle("Confirmation...");

              // Setting Dialog Message
              alertDialog.setMessage("Do you want to accept this job?");

              // Setting Icon to Dialog
              alertDialog.setIcon(R.drawable.ic_dialog_alert);

              // Setting Positive "Yes" Button
              alertDialog.setPositiveButton("YES", new DialogInterface.OnClickListener() {
                          public void onClick(DialogInterface dialog,int which) {
                              // Write your code here to execute after dialog
                              Toast.makeText(getApplicationContext(), "Accept", Toast.LENGTH_SHORT).show();
                              // Return Result from alertdialog to database
                              result = "accepted";
                               System.out.println("The result is "+ result);
                               new UpdateActivity().execute();
                          }
                      });
              // Setting Negative "NO" Button
              alertDialog.setNegativeButton("NO", new DialogInterface.OnClickListener() {
                          public void onClick(DialogInterface dialog, int which) {
                              // Write your code here to execute after dialog
                              Toast.makeText(getApplicationContext(), "Reject", Toast.LENGTH_SHORT).show();
                              dialog.cancel();
                              // Return Result from alertdialog to database
                              result = "rejected";
                              System.out.println("The result is "+ result);
                               new UpdateActivity().execute();
                          }
                      });
              return alertDialog.show();      }

/** * 更新数据库的后台异步任务 * */ class UpdateActivity extends AsyncTask {

/** * 在启动后台线程之前显示进度对话框 * */ @Override protected void onPreExecute() { super.onPreExecute(); pDialog = new ProgressDialog(NotificationActivity.this); pDialog.setMessage("发送中..."); pDialog.setIndeterminate(false); pDialog.setCancelable(true); pDialog.show(); }

/** * 保存产品 * */ protected String doInBackground(String... args) { System.out.println("Sending...");

  // getting updated data from dialog         String confirmation =

结果.toString(); System.out.println("结果到字符串..." + 确认 );

  // Building Parameters              List<NameValuePair> params = new

数组列表（）; params.add(new BasicNameValuePair(TAG_ID, uid)); params.add(new BasicNameValuePair(TAG_RESULT, 确认)); // 获取 JSON 对象 // 注意 create product url 接受 POST 方法 JSONObject json = jsonParser.makeHttpRequest(UPDATE_URL, "POST", params); System.out.println("Json 解析..."); // 检查日志 cat 来自响应 Log.d("Create Response", json.toString());

          // check for success tag
          try {
              System.out.println("Checking...");
              int success = json.getInt(TAG_SUCCESS);

              if (success == 1) {
                  // successfully created product
                  Intent i = new Intent(getApplicationContext(), JobsAcceptedActivity.class);
                  startActivity(i);
                  //Toast.makeText(getApplicationContext(), "Update successfully...", Toast.LENGTH_SHORT).show();
                  System.out.println("Successfully updated...");
                  // closing this screen
                  finish();
              } else {
                  // failed to create product
                  //Toast.makeText(getApplicationContext(), "Update unsucessfully...", Toast.LENGTH_SHORT).show();
                  System.out.println("Update unsuccessfully...");
              }
          } catch (JSONException e) {
              e.printStackTrace();
          }
          System.out.println("Done!");

          return null;            }

      /**
       * After completing background task Dismiss the progress dialog
       * **/          protected void onPostExecute(String file_url) {
          // dismiss the dialog once done
          pDialog.dismiss();          }

  }   }

PHP代码：

$响应 = 数组（）；// 检查必填字段 if (isset($_POST['U​​ID']) && isset($_POST['accept'])) {

$UID = $_POST['UID'];
$accept = $_POST['accept'];

// include db connect class
require_once __DIR__ . '/db_connect.php';

// connecting to db
$db = new DB_CONNECT();

// mysql update row with matched pid
$result = mysql_query("UPDATE notification SET accept = '$accept' WHERE UID = $UID");

// check if column inserted or not
if ($result) {
    // successfully updated
    $response["success"] = 1;
    $response["message"] = "Notification successfully updated.";

    // echoing JSON response
    echo json_encode($response);
} else {

} } else {
// required field is missing
$response["success"] = 0;
$response["message"] = "Required field(s) is missing";

// echoing JSON response
echo json_encode($response);
4

2 回答 2

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问：将值更新到数据库时，不是每次更新 1 行（这是我们想要的），而是更新整个数据库列。

答：听起来您可能想要在更新中使用更严格的“where”子句:)

于 2013-09-16T05:49:48.487 回答
0

这是你的 ==> $result = mysql_query("UPDATE notification SET accept = '$accept' WHERE UID = $UID");
我的建议 ==> $result = mysql_query("UPDATE notification SET accept = '$accept' WHERE UID = '$UID'"); 或
$queryString= "UPDATE 通知 SET accept = ".$accept." WHERE UID =".$UID;
$result = mysql_query($queryString);

于 2013-09-16T06:02:31.250 回答