Android 使用 firebase 的通知

Question

您好，我正在开发网络推送通知api。最近我已经升级到 fire base 并使用下面的代码。

string deviceId = "dmsGj47_Ulk:APA91bEMkevJzP2_mV2ALCSc_kSTZw57gMBEP2TWtHkrPl1VGTPJYvb0Be_F0zrzsttk78wopecHT_Af3ShAU39sMku0Ht09Pz22YevWkk6hkHjjl87DEvz_7mUJ3vGc05j4n0wjfKR7";
            string message = "Demo Notification";
            string tickerText = "Patient Registration";
            string contentTitle = "Hi";
            string postData =
            "{ \"registration_ids\": [ \"" + deviceId + "\" ], " +
              "\"data\": {\"tickerText\":\"" + tickerText + "\", " +
                         "\"contentTitle\":\"" + contentTitle + "\", " +
                         "\"message\": \"" + message + "\"}}";

            string apiKey = "";

            string response = SendGCMNotification(apiKey, postData);
            return Request.CreateResponse(HttpStatusCode.OK, "notification sent");
  private string SendGCMNotification(string apiKey, string postData, string postDataContentType = "application/json")
        {
            ServicePointManager.ServerCertificateValidationCallback += new RemoteCertificateValidationCallback(ValidateServerCertificate);
            byte[] byteArray = Encoding.UTF8.GetBytes(postData);
            HttpWebRequest Request = (HttpWebRequest)WebRequest.Create("https://android.googleapis.com/gcm/send");
            Request.Method = "POST";
            Request.ContentType = postDataContentType;
            Request.Headers.Add(string.Format("Authorization: key={0}", apiKey));
            Request.ContentLength = byteArray.Length;
            Stream dataStream = Request.GetRequestStream();
            dataStream.Write(byteArray, 0, byteArray.Length);
            dataStream.Close();
            try
            {
                WebResponse Response = Request.GetResponse();
                HttpStatusCode ResponseCode = ((HttpWebResponse)Response).StatusCode;
                if (ResponseCode.Equals(HttpStatusCode.Unauthorized) || ResponseCode.Equals(HttpStatusCode.Forbidden))
                {
                    var text = "Unauthorized - need new token";
                }
                else if (!ResponseCode.Equals(HttpStatusCode.OK))
                {
                    var text = "Response from web service isn't OK";
                }
                StreamReader Reader = new StreamReader(Response.GetResponseStream());
                string responseLine = Reader.ReadToEnd();
                Reader.Close();
                return responseLine;
            }
            catch (Exception e)
            {
            }
            return "error";
        }

当我运行上面的代码出现错误“{\"multicast_id\":6423299842549772135,\"success\":0,\"failure\":1,\"canonical_ids\":0,\"results\":[{\"error\":\"MismatchSenderId\"}]}". 在设置选项的 https://console.firebase.google.com/project/androidnotification-17721223233/settings/general/ 中有一个常规选项卡。在常规选项卡中有 Web API 键。在云消息选项卡下，我可以看到服务器密钥、旧版服务器密钥和发件人 ID。在上面的 api 密钥代码中，我使用了服务器密钥、旧版服务器密钥和 webapi 密钥，但都失败了。我可以知道哪个是正确的使用方法吗？任何帮助，将不胜感激。谢谢。

    HttpWebRequest Request = (HttpWebRequest)WebRequest.Create("https://fcm.googleapis.com/fcm/send");
    Request.Method = "POST";
    Request.ContentType = postDataContentType;
    Request.Headers.Add(string.Format("Authorization: key={0}", apiKey));
    Request.Headers.Add(string.Format("Sender: id={1}", "507022575461"));

Answer 1

您必须在 http-header

中设置发件人 ID

在云消息选项卡下，服务器密钥是发件人 ID。

在http-header中：

'Content-type: application/json'

'Authorization: key=AAAA0...' <= 你的钥匙在这里。

向此地址发送 POST 请求： https://fcm.googleapis.com/fcm/send

Answer 2

错误消息是MismatchSenderId。如果您运行 android 上的此代码，您应该将 google-services.json 放入应用程序的 app 文件夹中，并且它应该是在 [=] 中为您的应用程序创建的那个13=]。如果您的 android 项目中有此文件，请打开它并检查 senderID 的值是否与您正在使用的 server key 的 senderId 相同。

Android 使用 firebase 的通知

Android notification using fire base

android

push-notification

google-cloud-messaging