错误:没有有效的注册IDS IOS FCM

Question

所以我正在努力进行推送通知，并且遵循了本教程，并且能够成功地将Firebase项目的推送通知发送到我的手机。现在，我试图将发送消息传递到设备组，如本Google教程所示。

现在，我使用此方法获得了设备令牌：

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data)
{
    let   tokenString = deviceToken.reduce("", {$0 + String(format: "%02X",    $1)})
    print("deviceToken: (tokenString)")
}

我试图将其添加到设备组(在服务器端(，例如：

public static String addDeviceToGroup(String userKeyName, List<String> deviceToken, String notificationKey) throws IOException, JSONException {
    String result = "";
    URL url = new URL(API_URL_FCM_GROUP);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setUseCaches(false);
    conn.setDoInput(true);
    conn.setDoOutput(true);
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Authorization", "key=" + AUTH_KEY_FCM);
    conn.setRequestProperty("Content-Type", "application/json");
    conn.setRequestProperty("project_id", SENDER_ID);
    JSONObject json = new JSONObject();
    json.put("registration_ids",deviceToken);
    json.put("operation","add");
    json.put("notification_key_name",userKeyName.trim());
    json.put("notification_key",notificationKey.trim());
    try {
        OutputStreamWriter wr = new OutputStreamWriter(
                conn.getOutputStream());
        wr.write(json.toString());
        wr.flush();
        int responseCode = conn.getResponseCode();
        System.out.print("RESPONSE CODE in addDeviceToGroup IS: " + responseCode  + "n");
        BufferedReader br = null;
        if (responseCode == 200)
            br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        else
            br = new BufferedReader(new InputStreamReader(conn.getErrorStream()));
        String output;
        System.out.println("Output from Server .... n");
        while ((output = br.readLine()) != null) {
            System.out.println(output);
        }
        result = SUCCESS;
    } catch (Exception e) {
        e.printStackTrace();
        result = FAILURE;
    }
    System.out.println("FCM Notification added device to group successfully RESULT IS " + result);
    return result;
}

我一直将400作为响应代码，并且我继续遇到此错误：

{"error":"no valid registration ids"}

尝试从设备组删除时也会遇到相同的错误。

编辑：但是，当我获得该令牌时：

let secondToken = InstanceID.instanceID().token()!

成功将令牌添加到设备组中，当我将用户MSG发送到属于设备的通知密钥时，在我的控制台中显示了它已交付：

{"success":2,"failure":0}

但不会在我的设备上弹出。

任何帮助将不胜感激。

Answer 1

我不知道您是否仍然需要帮助，但是为了摆脱错误，您必须将DeviceToken放在数组中。

  let postparameters = ["operation": "create",
                          "notification_key_name": name,
                          "registration_ids": [devicetoken]] as [String : Any]