无法使用FCM在前台接收推送通知 [英] unable to receive the push notification in foreground using FCM
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问题描述
我一直在尝试在我的应用中获取Firebase推送通知.我已经尝试了互联网上的所有内容，但找不到解决方案.我一直在后台收到通知，但是当App在前台时我无法收到通知.但是，当我在"didReceiveRemoteNotification"中打印userInfo时，会在控制台中收到消息任何帮助将不胜感激.
I have been trying to get firebase push-notification in my app. I have tried everything on the internet but couldn't find solution. I have been receiving notification in background, but when App is in foreground I am unable to get the notification. But when I print the userInfo in "didReceiveRemoteNotification" I get the message in console Any help would be appreciated.
import Firebase
import UserNotifications
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate{
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
//FirebaseApp.configure()
self.initializeFCM(application)
let token = InstanceID.instanceID().token()
debugPrint("GCM TOKEN = \(String(describing: token))")
return true
}
func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error)
{
debugPrint("didFailToRegisterForRemoteNotificationsWithError: \(error)")
}
func application(received remoteMessage: MessagingRemoteMessage)
{
debugPrint("remoteMessage:\(remoteMessage.appData)")
}
func initializeFCM(_ application: UIApplication)
{
print("initializeFCM")
if #available(iOS 10.0, *) // enable new way for notifications on iOS 10
{
let center = UNUserNotificationCenter.current()
center.delegate = self
center.requestAuthorization(options: [.badge, .alert , .sound]) { (accepted, error) in
if !accepted
{
print("Notification access denied.")
}
else
{
print("Notification access accepted.")
UIApplication.shared.registerForRemoteNotifications();
}
}
}
else
{
let type: UIUserNotificationType = [UIUserNotificationType.badge, UIUserNotificationType.alert, UIUserNotificationType.sound];
let setting = UIUserNotificationSettings(types: type, categories: nil);
UIApplication.shared.registerUserNotificationSettings(setting);
UIApplication.shared.registerForRemoteNotifications();
}
FirebaseApp.configure()
Messaging.messaging().delegate = self
Messaging.messaging().shouldEstablishDirectChannel = true
}
// enable new way for notifications on iOS 10
func application(_ application: UIApplication, didRegister notificationSettings: UIUserNotificationSettings)
{
debugPrint("didRegister notificationSettings")
if (notificationSettings.types == .alert || notificationSettings.types == .badge || notificationSettings.types == .sound)
{
application.registerForRemoteNotifications()
}
}
func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData)
{
debugPrint("didRegisterForRemoteNotificationsWithDeviceToken: NSDATA")
let token = String(format: "%@", deviceToken as CVarArg)
debugPrint("*** deviceToken: \(token)")
Messaging.messaging().apnsToken = deviceToken as Data
debugPrint("Firebase Token:",InstanceID.instanceID().token() as Any)
}
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data)
{
debugPrint("didRegisterForRemoteNotificationsWithDeviceToken: DATA")
let token = String(format: "%@", deviceToken as CVarArg)
debugPrint("*** deviceToken: \(token)")
Messaging.messaging().apnsToken = deviceToken
debugPrint("Firebase Token:",InstanceID.instanceID().token() as Any)
}
//-------------------------------------------------------------------------//
// [START receive_message]
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) {
Messaging.messaging().appDidReceiveMessage(userInfo)
print(userInfo)
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],
fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
Messaging.messaging().appDidReceiveMessage(userInfo)
print(userInfo)
completionHandler(UIBackgroundFetchResult.newData)
}
// [END receive_message]
}
// [START ios_10_message_handling]
@available(iOS 10, *)
extension AppDelegate : UNUserNotificationCenterDelegate {
// Receive displayed notifications for iOS 10 devices.
func userNotificationCenter(_ center: UNUserNotificationCenter,
willPresent notification: UNNotification,
withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
let userInfo = notification.request.content.userInfo
// With swizzling disabled you must let Messaging know about the message, for Analytics
Messaging.messaging().appDidReceiveMessage(userInfo)
print(userInfo)
// Change this to your preferred presentation option
completionHandler([])
}
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse,
withCompletionHandler completionHandler: @escaping () -> Void) {
let userInfo = response.notification.request.content.userInfo
Messaging.messaging().appDidReceiveMessage(userInfo)
print(userInfo)
completionHandler()
}
}
// [END ios_10_message_handling]
extension AppDelegate : MessagingDelegate {
// [START refresh_token]
func messaging(_ messaging: Messaging, didRefreshRegistrationToken fcmToken: String) {
print("Firebase registration token: \(fcmToken)")
}
func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
print("Received data message: \(remoteMessage.appData)")
}
// [END ios_10_data_message]
}
推荐答案
在iOS 10中，您可以使用以下功能显示Apple的默认通知横幅.通知行为将取决于您在completionHandler中返回的属性.
From iOS 10, You can display Apple's default notification banner using below function. Notification behaviour will depend on properties which you return within completionHandler.
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
let content = notification.request.content
// Process notification content
print("\(content.userInfo)")
completionHandler([.alert, .sound]) // Display notification Banner
}
根据您问题的详细信息，您已经实现了上述功能，但具有空白的completionHandler().因此，当应用程序处于前台状态时，通知横幅不会显示.
早期的iOS 10:
您需要自己处理.就像是在应用程序处于前台状态时要在收到通知时显示横幅一样.您需要自己执行此操作.您必须设计自定义通知横幅才能在应用程序中显示.
You need to handle this by yourself. Like if you want to display banner when you received a notification, while app is in foreground state. You need to do this by yourself. You have to design your custom notification banner to display within app.
希望它对您有帮助.
这篇关于无法使用FCM在前台接收推送通知的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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