import UIKit
import UserNotifications
 
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
     
    var window: UIWindow?
     
    func application(_ application: UIApplication, didFinishLaunchingWithOptions
        launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        //请求通知权限
        UNUserNotificationCenter.current()
            .requestAuthorization(options: [.alert, .sound, .badge]) {
                (accepted, error) in
                if !accepted {
                    print("用户不允许消息通知。")
                }
        }
         
        return true
    }
     
    func applicationWillResignActive(_ application: UIApplication) {
    }
     
    func applicationDidEnterBackground(_ application: UIApplication) {
    }
     
    func applicationWillEnterForeground(_ application: UIApplication) {
    }
     
    func applicationDidBecomeActive(_ application: UIApplication) {
    }
     
    func applicationWillTerminate(_ application: UIApplication) {
    }
}

原文出自：www.hangge.com  转载请保留原文链接：https://www.hangge.com/blog/cache/detail_1851.html

import UIKit
import UserNotifications
 
class ViewController: UIViewController {
 
    override func viewDidLoad() {
        super.viewDidLoad()
         
        //设置推送内容
        let content = UNMutableNotificationContent()
        content.title = "hangge.com"
        content.body = "做最好的开发者知识平台"
         
        //设置通知触发器
        let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 30, repeats: false)
         
        //设置请求标识符
        let requestIdentifier = "com.hangge.testNotification"
         
        //设置一个通知请求
        let request = UNNotificationRequest(identifier: requestIdentifier,
                                            content: content, trigger: trigger)
         
        //将通知请求添加到发送中心
        UNUserNotificationCenter.current().add(request) { error in
            if error == nil {
                print("Time Interval Notification scheduled: \(requestIdentifier)")
            }
        }
    }
 
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
}

//设置推送内容
let content = UNMutableNotificationContent()
content.title = "hangge.com"
content.subtitle = "航歌（二级标题）"
content.body = "做最好的开发者知识平台"
content.badge = 2

let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 10, repeats: false)

var components = DateComponents()
components.year = 2017
components.month = 11
components.day = 11
let trigger = UNCalendarNotificationTrigger(dateMatching: components, repeats: false)

var components = DateComponents()
components.weekday = 2 //周一
components.hour = 8 //上午8点
components.second = 30 //30分
let trigger = UNCalendarNotificationTrigger(dateMatching: components, repeats: true)

let coordinate = CLLocationCoordinate2D(latitude: 52.10, longitude: 51.11)
let region = CLCircularRegion(center: coordinate, radius: 200, identifier: "center")
region.notifyOnEntry = true  //进入此范围触发
region.notifyOnExit = false  //离开此范围不触发
let trigger = UNLocationNotificationTrigger(region: region, repeats: true)