【SwiftUI】通知機能の実装方法！ローカル通知とリモート通知の違い

ContentView.swift
struct ContentView: View {
    
    init(){
        let center = UNUserNotificationCenter.current()
        center.requestAuthorization(options: .alert) { granted, error in
            if granted {
                print("許可されました！")
            }else{
                print("拒否されました...")
            }
        }
    }
    
    var body: some View {
        Button(action: {
          // ここに通知送信の処理を記述
        }, label: {
            Text("通知を送信")
        })
    }
}

struct UNAuthorizationOptions {
  static var alert: UNAuthorizationOptions { get }       // アラート
  static var sound: UNAuthorizationOptions { get }       // サウンド
  static var badge: UNAuthorizationOptions { get }       // バッジ
  static var carPlay: UNAuthorizationOptions { get }     // carPlay
  static var provisional: UNAuthorizationOptions { get } // 通知機能のお試し用(通知許可ポップアップは非表示)
}

ContentView.swift
func sendNotificationRequest(){
    // 通知オブジェクト作成
    let content = UNMutableNotificationContent()
    content.title = "通知のタイトルです"
    content.body = "通知の内容です"
    // 通知を発行するトリガー(条件)を設定
    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)
    let request = UNNotificationRequest(identifier: "通知No.1", content: content, trigger: trigger)
    // 通知を登録
    UNUserNotificationCenter.current().add(request)
}

Button(action: {
    sendNotificationRequest()
}, label: {
    Text("通知を送信")
})

let content = UNMutableNotificationContent()
content.title = "通知のタイトルです"
content.body = "通知の内容です"

let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)

var dateComponents = DateComponents()
dateComponents.year = year
dateComponents.month = month
dateComponents.day = day
dateComponents.hour = hour
dateComponents.minute = minute
let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: true)

let request = UNNotificationRequest(identifier: "通知No.1", content: content, trigger: trigger)

UNUserNotificationCenter.current().add(request)

let center = UNUserNotificationCenter.current()
center.requestAuthorization(options: .provisional) { granted, error in
    if granted {
        print("許可されました！")
    }else{
        print("拒否されました...")
    }
}

AppDelegate.swift
import Foundation
import UIKit

class AppDelegate: NSObject, UIApplicationDelegate{
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
        print("アプリが起動したよ")
        return true
    }
}

AppDelegate.swift
import Foundation
import UIKit

class AppDelegate:NSObject,UIApplicationDelegate{
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
      let center = UNUserNotificationCenter.current()
        center.requestAuthorization(options: [.alert, .sound, .badge]) { granted, error in
            if granted {
                print("許可されました！")
            }else{
                print("拒否されました...")
            }
        }
        return true
    }
}

HelloWorldApp.swift
import SwiftUI

@main
struct HelloWorldApp: App {
    
    @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
    
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

AppDelegate.swift
import Foundation
import UIKit

class AppDelegate: NSObject, UIApplicationDelegate, UNUserNotificationCenterDelegate{
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {

        // UNUserNotificationCenterDelegateの適応
        UNUserNotificationCenter.current().delegate = self
      
        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { granted, error in
            if granted {
                print("許可されました！")
            }else{
                print("拒否されました...")
            }
        }
        return true
    }
    
    func userNotificationCenter(
        _ center: UNUserNotificationCenter,
        willPresent notification: UNNotification,
        withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
            completionHandler([[.banner, .list, .sound]])
    }
}

AppDelegate.swift
extension AppDelegate :UNUserNotificationCenterDelegate{

    func userNotificationCenter(
        _ center: UNUserNotificationCenter,
        didReceive response: UNNotificationResponse,
        withCompletionHandler completionHandler: @escaping () -> Void) {

        print("タップされたよ")
        completionHandler()
    }
}