Question

当我的手机离线（未连接到互联网）时，我会向我的设备发送通知.5或6分钟后，我将手机连接到互联网，但我没有收到我之前发送的通知。如何在连接到互联网后获得通知。

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    private static final String TAG = "MyFirebaseMsgService";

    Integer notify_no = 0;

    /**
     * Called when message is received.
     *
     * @param remoteMessage Object representing the message received from Firebase Cloud Messaging.
     */
    // [START receive_message]
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        // [START_EXCLUDE]
        // There are two types of messages data messages and notification messages. Data messages are handled
        // here in onMessageReceived whether the app is in the foreground or background. Data messages are the type
        // traditionally used with GCM. Notification messages are only received here in onMessageReceived when the app
        // is in the foreground. When the app is in the background an automatically generated notification is displayed.
        // When the user taps on the notification they are returned to the app. Messages containing both notification
        // and data payloads are treated as notification messages. The Firebase console always sends notification
        // messages. For more see: https://firebase.google.com/docs/cloud-messaging/concept-options
        // [END_EXCLUDE]

        // TODO(developer): Handle FCM messages here.

        Log.d(TAG, "From: " + remoteMessage.getFrom());

        // Check if message contains a data payload.
        if (remoteMessage.getData().size() > 0) {
            Log.d(TAG, "Message data payload: " + remoteMessage.getData());
           /* Integer badge = Integer.parseInt(remoteMessage.getData().get("badge"));
            Log.d("notificationNUmber",":"+badge);
            setBadge(getApplicationContext(), badge);*/
        }

        // Check if message contains a notification payload.
        if (remoteMessage.getNotification() != null) {
            Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
        }
         notify_no = Integer.parseInt(remoteMessage.getData().get("msgcnt"));

        if (notify_no < 1) {
            notify_no = notify_no + 1;
        } else {
            notify_no = 0;
        }





        //EventBus.getDefault().post(remoteMessage.getNotification().getBody());
        sendNotification(remoteMessage.getNotification().getBody());



        // Also if you intend on generating your own notifications as a result of a received FCM
        // message, here is where that should be initiated. See sendNotification method below.
    }




public void sendNotification(String messageBody)
 {

     Intent intent = new Intent(this,Main2Activity.class);
        intent.putExtra("messages","messages");
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.putExtra("fcm_notification", "Y");
       // startActivity(intent);

        PendingIntent pendingIntent = PendingIntent.getActivity(this,0, intent,
                PendingIntent.FLAG_ONE_SHOT);

        Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
                .setContentTitle("FCM Message")
                .setContentText(messageBody)
                .setAutoCancel(true)
                .setSound(Uri.parse("content://settings/system/notification_sound"))
                .setVibrate(new long []{100,2000,500,2000})
                .setContentIntent(pendingIntent);

        NotificationManager notificationManager =(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);


        if (NOTIFICATION_ID > 1073741824) {
            NOTIFICATION_ID = 0;
        }
        notificationManager.notify(NOTIFICATION_ID++, notificationBuilder.build());


        // ShortcutBadger.with(getApplicationContext()).count(badgeCount);
    }
}

如何在连接到互联网后收到通知？

我使用PHP发送

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
$result = curl_exec($ch);
if ($result === FALSE) {
die('Curl failed: ' . curl_error($ch));
}
curl_close($ch);

Answer 1

正如您在手册中看到的那样：

https://firebase.google.com/docs/cloud-messaging/concept-options

FCM通常在发送后立即发送消息。但是，这可能并非总是可行。例如，如果平台是Android，则可以关闭，离线或以其他方式不可用设备。 FCM可能会故意延迟消息，以防止应用消耗过多的资源并对电池寿命产生负面影响。

和此：

您可以使用HTTP和XMPP请求中支持的time_to_live参数来指定邮件的最长生命周期。此参数的值必须是0到2,419,200秒的持续时间，它对应于FCM存储和尝试传递消息的最长时间。不包含此字段的请求默认为最长四周。

未显示FCM通知

1 个答案: