我一直在尝试在我的应用程序中获取 firebase 推送通知。我已经尝试了互联网上的所有方法,但找不到解决方案。我一直在后台收到通知,但是当应用程序在前台时我无法收到通知。但是当我在“didReceiveRemoteNotification”中打印 userInfo 时,我在控制台中收到了消息 任何帮助将不胜感激。
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]
}
最佳答案
自 iOS 14 以来,.alert
已弃用,您可以改用 .banner
:
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
let content = notification.request.content
// Process notification content
print("\(content.userInfo)")
completionHandler([.banner, .list, .sound]) // Display notification Banner
}
从 iOS 10 开始,您可以使用以下函数显示 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。
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
}
根据您问题中的详细信息,您已经实现了上述功能,但 completionHandler() 为空。因为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:
你需要自己处理。就像你想在收到通知时显示横幅,而应用程序处于前台状态。你需要自己做这件事。您必须设计要在应用内显示的自定义通知横幅。
希望对你有帮助。
关于ios - 无法使用 FCM 在前台接收推送通知,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44939407/