在 iOS 10 - Swift 3 中添加本地通知

Question

所以我一直在尝试向新的 UNUserNotificationCenter 添加通知，但我似乎没有收到。

我的视图控制器有一个动作：

@IBAction func sendPressed(_ sender: AnyObject) {
    let content = UNMutableNotificationContent()

    content.title = "Hello"
    content.body = "What up?"
    content.sound = UNNotificationSound.default()

    // Deliver the notification in five seconds.
    let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 5, repeats: false)
    let request = UNNotificationRequest.init(identifier: "FiveSecond", content: content, trigger: trigger)

    // Schedule the notification.
    let center = UNUserNotificationCenter.current()
    center.add(request) { (error) in
        print(error)
    }
    print("should have been added")
}

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)

    let center = UNUserNotificationCenter.current()
    center.requestAuthorization([.alert, .sound]) { (granted, error) in
    }
}

而且我在项目中也有一个 Notification Content Extension，但它似乎根本没有被触发，我缺少什么想法？我正在尝试用户文档中的示例，但它并没有告诉我更多信息，或者我已经错过了。

此处：https://developer.apple.com/reference/usernotifications/unmutablenotificationcontent

还有： https://developer.apple.com/reference/usernotificationsui https://developer.apple.com/reference/usernotifications

编辑：

所以将应用程序置于后台就可以了。

Answer 1

您需要注册通知...我试过了并且有效。

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.
        let center = UNUserNotificationCenter.current()
        center.requestAuthorization([.alert, .sound]) { (granted, error) in
            // Enable or disable features based on authorization.
        }
        return true
    }

编辑： 从 iOS 10 开始，您无需将应用置于后台即可显示通知。

使用下面的回调将通知配置为在前台显示。

func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void)

Here 是示例项目。

Answer 2

使用 Objective-C 实现：

我在这里写了一个Demo工程：iOS10AdaptationTips .

导入用户通知

///Notification become independent from Foundation
@import UserNotifications;

请求 localNotification 授权

UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
[center requestAuthorizationWithOptions:(UNAuthorizationOptionBadge | UNAuthorizationOptionSound | UNAuthorizationOptionAlert)
                      completionHandler:^(BOOL granted, NSError * _Nullable error) {
                          if (!error) {
                              NSLog(@"request authorization succeeded!");
                              [self showAlert];
                          }
                      }];

请求授权：

安排本地通知

更新应用程序图标徽章编号

    //        //Deliver the notification at 08:30 everyday
    //        NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
    //        dateComponents.hour = 8;
    //        dateComponents.minute = 30;
    //        UNCalendarNotificationTrigger *trigger = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:dateComponents repeats:YES];

    UNMutableNotificationContent *content = [[UNMutableNotificationContent alloc] init];
    content.title = [NSString localizedUserNotificationStringForKey:@"Elon said:" arguments:nil];
    content.body = [NSString localizedUserNotificationStringForKey:@"Hello Tom！Get up, let's play with Jerry!"
                                                         arguments:nil];
    content.sound = [UNNotificationSound defaultSound];

    /// 4. update application icon badge number
    content.badge = @([[UIApplication sharedApplication] applicationIconBadgeNumber] + 1);
    // Deliver the notification in five seconds.
    UNTimeIntervalNotificationTrigger *trigger = [UNTimeIntervalNotificationTrigger
                                                  triggerWithTimeInterval:5.f repeats:NO];
    UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:@"FiveSecond"
                                                                          content:content trigger:trigger];
    /// 3. schedule localNotification
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
    [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
        if (!error) {
            NSLog(@"add NotificationRequest succeeded!");
        }
    }];

那么会出现这样的：

在后台：锁定屏幕：

如果Repeat默认只显示一个而不是在 iOS9 的锁定屏幕上显示很多：并且自动支持3D Touch

我在这里写一个Demo：iOS10AdaptationTips .

Answer 3

我按如下方式解决了我的问题（Firebase，Swift 3）：

Find this method on your AppDelegate:

func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {

Find this line:

completionHandler()

End set:

completionHandler([.alert,.sound,.badge])

如果您没有将演示选项传递给 completionHandler 方法，则不会触发通知。

Answer 4

我已经为 Swift 3 做了一个实现，这可能有帮助，你可以在这里查看：

Answer 5

这里有几个步骤：

确保您拥有权限。如果没有，请使用 UNUserNotificationCenter.current().requestAuthorization 来获取它。或者如果你想显示请求弹出不止一次，请按照。
如果你想显示通知 foreground，必须将 UNUserNotificationCenterDelegate 分配给某个地方。

给我看代码

@IBAction func sendPressed(_ sender: AnyObject) {
    let content = UNMutableNotificationContent()
    content.title = "Hello"
    content.body = "What up?"
    content.sound = UNNotificationSound.default()

    let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 5, repeats: false)
    let request = UNNotificationRequest.init(identifier: "FiveSecond", content: content, trigger: trigger)

    let center = UNUserNotificationCenter.current()
    center.add(request) { (error) in
        print(error)
    }
}

override func viewDidLoad(_ animated: Bool) {
    super.viewDidLoad(animated)

    // Assign the delegate
    UNUserNotificationCenter.current().delegate = self

    // Ask the permission
    let center = UNUserNotificationCenter.current()
    center.requestAuthorization([.alert, .sound]) { (granted, error) in
        if granted {
            // do something
        }
    }
}
// Remember to add UNUserNotificationCenterDelegate to your view controller
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
    print("Got the msg...")
    completionHandler([.badge, .sound, .alert])
}

在 iOS 10 - Swift 3 中添加本地通知

Add Local Notification in iOS 10 - Swift 3

swift

swift3

uilocalnotification

ios10

unusernotificationcenter