今天我遇到了很多麻烦来实现这些琐碎的通知,因为它是最近的新功能,我找不到任何解决方案(特别是在目标C中)！我目前有2个不同的通知,一个警报和一个徽章更新.
警报问题
在将我的手机从IOS 10.1升级到10.2之前,我在Appdelegate上发出警报,当用户手动关闭应用程序时,该警报立即被触发：
-(voID)applicationWillTerminate:(UIApplication *)application { NSLog(@"applicationWillTerminate"); // Notification terminate [self registerTerminateNotification];}// Notification Background terminate -(voID) registerTerminateNotification { // the center UNUserNotificationCenter * notifCenter = [UNUserNotificationCenter currentNotificationCenter]; // Content UNMutableNotificationContent *content = [UNMutableNotificationContent new]; content.Title = @"Stop"; content.body = @"Application closed"; content.sound = [UNNotificationSound defaultSound]; // Trigger UNTimeIntervalNotificationTrigger *trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:1 repeats:NO]; // IDentifIEr Nsstring *IDentifIEr = @"localnotificationTerminate"; // création de la requête UNNotificationRequest *terminateRequest = [UNNotificationRequest requestWithIDentifIEr:IDentifIEr content:content trigger:trigger]; // Ajout de la requête au center [notifCenter addNotificationRequest:terminateRequest withCompletionHandler:^(NSError * _Nullable error) { if (error != nil) { NSLog(@"Error %@: %@",IDentifIEr,error); } }];} 在IOS 10.2之前它运行得很好,当我手动关闭应用程序时,会出现警报.但是自从我更新到IOS 10.2后,没有任何理由没有任何显示,我没有改变任何东西,我看不出有什么遗漏……
徽章问题
我也试过(这次只在IOS 10.2中)在我的应用程序图标上实现了一个很好的标记,直到我试图删除它.这是执行它的功能：
+(voID) incrementBadgeIcon { // only increment if application is in background if ([[UIApplication sharedApplication] applicationState] == UIApplicationStateBackground){ NSLog(@"increment badge"); // notif center UNUserNotificationCenter *notifCenter = [UNUserNotificationCenter currentNotificationCenter]; // Content UNMutableNotificationContent *content = [UNMutableNotificationContent new]; content.badge = [NSNumber numberWithInt:1]; // Trigger UNTimeIntervalNotificationTrigger *trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:1 repeats:NO]; // IDentifIEr Nsstring *IDentifIEr = @"localnotificationIncrementBadge"; // request UNNotificationRequest *incrementBadgeRequest = [UNNotificationRequest requestWithIDentifIEr:IDentifIEr content:content trigger:trigger]; // Ajout de la requête au center [notifCenter addNotificationRequest:incrementBadgeRequest withCompletionHandler:^(NSError * _Nullable error) { if (error != nil) { NSLog(@"Error %@: %@",error); } }]; }} 现在它没有增加徽章编号,因为它的名称应该建议,但它只是将徽章编号设置为1.文档说如果你将content.badge设置为0,它会删除它,但这不起作用.我尝试使用其他数字,当我手动将其更改为“2”,“3”等时……它会发生变化,但如果我将其设置为0,则无效.
另外,在我之前链接的教程中,它提到了几个函数作为getPendingNotificationRequests：completionHandler：和getDeliverednotificationRequests：completionHandler：.我注意到,当我在调用incrementBadgeIcon之后立即调用这些函数时,如果content.badge设置为’1′,’2’等……它将出现在待处理通知列表中.但是,当我将其设置为0时,它不会出现在任何地方.我没有收到错误,Xcode中没有任何警告,我的应用程序徽章仍然存在.
有谁知道如何修复这两个警报？
预先感谢
PS：我也尝试使用removeAllPendingNotificationRequests和removeAllDeliverednotifications两者都没有成功.
解决方法 关于警报：当您的本地通知触发时,您的应用可能仍处于前台,因此您需要实施委托方法,以便通知执行任何 *** 作.例如,在您的委托中定义此方法将允许通知显示警报,发出声音并更新徽章：
func userNotificationCenter(_ center: UNUserNotificationCenter,willPresent notification: UNNotification,withCompletionHandler completionHandler: @escaPing (UNNotificationPresentationoptions) -> VoID) { completionHandler([.alert,.badge,.sound])} 关于徽章：
我观察到创建一个UNMutableNotificationContent对象并仅指定徽章值(作为NSNumber对象)适用于除0之外的所有徽章值(即,您无法以这种方式清除徽章).我没有找到任何关于为什么0的行为与任何其他值不同的文档,特别是因为.badge属性被定义为NSNumber？所以框架应该能够区分nil(无变化)和0(清除徽章).
我已针对此提交了radar.
作为解决方法,我发现在UNMutableNotificationContent对象上设置Title属性,徽章值为NSNumber(值：0).如果缺少Title属性,则不会触发.
添加Title属性仍然不会向用户显示警告(更新：在iOS 11中不再是这种情况！),因此这是一种无需调用UIApplication对象即可将徽章值静默更新为0的方法(通过UIApplication.shared.applicationIconBadgeNumber = 0).
这是我的示例项目中的全部代码; VIEwController代码中有一个MARK,显示插入Title属性的位置可以解决问题：
//// AppDelegate.swift// userNotificationZeroBadgeTest//// Created by Jeff Vautin on 1/3/17.// copyright © 2017 Jeff Vautin. All rights reserved.//import UIKitimport UserNotifications@UIApplicationMainclass AppDelegate: UIResponder,UIApplicationDelegate { var window: UIWindow? func application(_ application: UIApplication,dIDFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool { UNUserNotificationCenter.current().requestAuthorization(options: [.badge,.alert,.sound]) { (success,error) -> VoID in print("Badge auth: \(success)") } // For handling Foreground notifications,this needs to be assigned before finishing this method let vc = window?.rootVIEwController as! VIEwController let center = UNUserNotificationCenter.current() center.delegate = vc return true }}//// VIEwController.swift// userNotificationZeroBadgeTest//// Created by Jeff Vautin on 1/3/17.// copyright © 2017 Jeff Vautin. All rights reserved.//import UIKitimport UserNotificationsclass VIEwController: UIVIEwController,UNUserNotificationCenterDelegate { @IBAction func start(_ sender: Any) { // reset badge directly (this always works) UIApplication.shared.applicationIconBadgeNumber = 0 let center = UNUserNotificationCenter.current() // Schedule badge value of 1 in 5 seconds let notificationBadgeOneContent = UNMutableNotificationContent() notificationBadgeOneContent.badge = NSNumber(value: 1) let notificationBadgeOneTrigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 1*5,repeats: false) let notificationBadgeOneRequest = UNNotificationRequest.init(IDentifIEr: "1",content: notificationBadgeOneContent,trigger: notificationBadgeOneTrigger) center.add(notificationBadgeOneRequest) // Schedule badge value of 2 in 10 seconds let notificationBadgeTwoContent = UNMutableNotificationContent() notificationBadgeTwoContent.badge = NSNumber(value: 2) let notificationBadgeTwoTrigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 2*5,repeats: false) let notificationBadgeTwoRequest = UNNotificationRequest.init(IDentifIEr: "2",content: notificationBadgeTwoContent,trigger: notificationBadgeTwoTrigger) center.add(notificationBadgeTwoRequest) // Schedule badge value of 3 in 15 seconds let notificationBadgeThreeContent = UNMutableNotificationContent() notificationBadgeThreeContent.badge = NSNumber(value: 3) let notificationBadgeThreeTrigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 3*5,repeats: false) let notificationBadgeThreeRequest = UNNotificationRequest.init(IDentifIEr: "3",content: notificationBadgeThreeContent,trigger: notificationBadgeThreeTrigger) center.add(notificationBadgeThreeRequest) // Schedule badge value of 4 in 20 seconds let notificationBadgeFourContent = UNMutableNotificationContent() notificationBadgeFourContent.badge = NSNumber(value: 4) let notificationBadgeFourTrigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 4*5,repeats: false) let notificationBadgeFourRequest = UNNotificationRequest.init(IDentifIEr: "4",content: notificationBadgeFourContent,trigger: notificationBadgeFourTrigger) center.add(notificationBadgeFourRequest) // Schedule badge value of 0 in 25 seconds let notificationBadgeZeroContent = UNMutableNotificationContent() // MARK: Uncommenting this line setting Title property will cause notification to fire properly. //notificationBadgeZeroContent.Title = "Zero!" notificationBadgeZeroContent.badge = NSNumber(value: 0) let notificationBadgeZeroTrigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 5*5,repeats: false) let notificationBadgeZeroRequest = UNNotificationRequest.init(IDentifIEr: "0",content: notificationBadgeZeroContent,trigger: notificationBadgeZeroTrigger) center.add(notificationBadgeZeroRequest) } @IBAction func ListNotifications(_ sender: Any) { let center = UNUserNotificationCenter.current() center.getDeliverednotifications() { (notificationArray) -> VoID in print("Delivered notifications: \(notificationArray)") } center.getPendingNotificationRequests() { (notificationArray) -> VoID in print("Pending notifications: \(notificationArray)") } } // MARK: UNUserNotificationCenterDelegate func userNotificationCenter(_ center: UNUserNotificationCenter,withCompletionHandler completionHandler: @escaPing (UNNotificationPresentationoptions) -> VoID) { print("Received notification: \(notification)") completionHandler([.alert,.sound]) }} 总结 以上是内存溢出为你收集整理的IOS 10.2简单警报和徽章上的UserNotifications问题全部内容，希望文章能够帮你解决IOS 10.2简单警报和徽章上的UserNotifications问题所遇到的程序开发问题。
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