我是 Swift 的新手,我正在创建聊天应用程序,我需要在应用程序处于前台或最小化时发送通知。
但是当应用程序最小化时我没有收到通知(它在连接 USB 时工作。
通知代码:
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
let gcmMessageIDKey = "gcm.message_id"
func application(_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
FirebaseApp.configure()
Messaging.messaging().delegate = self
Messaging.messaging().shouldEstablishDirectChannel = true
if #available(iOS 10.0, *) {
UNUserNotificationCenter.current().delegate = self
let authOptions: UNAuthorizationOptions = [.alert, .sound, .badge]
UNUserNotificationCenter.current().requestAuthorization(
options: authOptions,
completionHandler: {_, _ in })
} else {
let settings: UIUserNotificationSettings =
UIUserNotificationSettings(types: [.alert, .sound, .badge], categories: nil)
application.registerUserNotificationSettings(settings)
}
application.registerForRemoteNotifications()
NotificationCenter.default.addObserver(self, selector: #selector(tokenRefreshNotification(_:)), name: NSNotification.Name.InstanceIDTokenRefresh, object: nil)
return true
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) {
Messaging.messaging().appDidReceiveMessage(userInfo)
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],
fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
Messaging.messaging().appDidReceiveMessage(userInfo)
let action = userInfo["action"] as! String
let notification = UILocalNotification()
notification.fireDate = NSDate() as Date
notification.alertTitle = "test"
notification.alertBody = "test"
notification.alertAction = "Ok"
UIApplication.shared.applicationIconBadgeNumber = 1
UIApplication.shared.scheduleLocalNotification(notification)
completionHandler(UIBackgroundFetchResult.newData)
}
func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
print("Unable to register for remote notifications: \(error.localizedDescription)")
}
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
print("APNs token retrieved: \(deviceToken)")
// With swizzling disabled you must set the APNs token here.
Messaging.messaging().apnsToken = deviceToken
}
}
@available(iOS 10, *)
extension AppDelegate : UNUserNotificationCenterDelegate {
func userNotificationCenter(_ center: UNUserNotificationCenter,
willPresent notification: UNNotification,
withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
let userInfo = notification.request.content.userInfo
if let messageID = userInfo[gcmMessageIDKey] {
print("Message ID: \(messageID)")
}
completionHandler([.alert, .sound, .badge])
}
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse,
withCompletionHandler completionHandler: @escaping () -> Void) {
let userInfo = response.notification.request.content.userInfo
if let messageID = userInfo[gcmMessageIDKey] {
print("Message ID: \(messageID)")
}
print(userInfo)
completionHandler()
}
@objc func tokenRefreshNotification(_ notification: Notification) {
guard let token = InstanceID.instanceID().token() else {
print("No firebase token, aborting registering device")
return
}
print("No firebase token, aborting registering device")
}
}
extension AppDelegate : MessagingDelegate {
// [START refresh_token]
func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
print("Firebase registration token: \(fcmToken)")
Messaging.messaging().subscribe(toTopic: "/topics/channel_18")
}
func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
print("Received data message: \(remoteMessage.appData)")
}
}
FCM有效载荷:
{
"to" : "/topics/channel_18",
"data" : {
"action" : "NOTIFY",
"message" : "{"text":"test" }"
},
"content_available" : true
}
我试过优先级高和声音选项,但没有任何效果。
请注意,我没有根据客户要求使用“通知”键。我在 FCM 有效载荷中仅使用数据消息
当应用程序在没有 USB 连接的情况下处于后台时,请任何人帮助我工作通知。
最佳答案
如果它适用于非静默通知,则意味着:
content_available
的位置场成notification
(并且由于您不想要标题正文,因此不要添加标题/正文)或仅添加到有效负载本身中,直到看到它工作为止。 default 13:11:47.178186 +0200 dasd DuetActivitySchedulerDaemon Removing a launch request for application <private> by activity <private> default com.apple.duetactivityscheduler
那么很可能它是一个与此类似的错误 iOS11 question .但是你必须打开一个新的雷达,因为那个雷达是关闭的,我相信是因为它是固定的!
关于firebase - 当应用程序在后台(最小化)时,推送通知不起作用 - iOS,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51550990/