UserNotifications

"NotificationsTesting" Would Like to Send You Notifications

Notifications may include alerts, sounds, and icon badges. These can be configured in Settings.

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| Dont't Allow |   Allow   |
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let center = UNUserNotificationCenter.current()
center.requestAuthorization(options: [.alert, .sound, .badge, .provisional]) { granted, error in
    
    if let error = error {
        // Handle the error here.
    }
    
    // Provisional authorization granted.
}

let center = UNUserNotificationCenter.current()
center.getNotificationSettings { settings in
    guard (settings.authorizationStatus == .authorized) ||
          (settings.authorizationStatus == .provisional) else { return }

    if settings.alertSetting == .enabled {
        // Schedule an alert-only notification.
    } else {
        // Schedule a notification with a badge and sound.
    }
}

import SwiftUI
import UserNotifications
import AlertToast

struct ContentView: View {
    @State private var showToast = false
    @State private var alertTitle = ""
    var body: some View {
        VStack {
            Image(systemName: "globe")
                .imageScale(.large)
                .foregroundColor(.accentColor)
            Text("Hello, world!")
            Button("Request Permission") {
                // First, Authorization 
                UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { success, error in
                    if success {
                        showToast.toggle()
                        alertTitle = "Success"
                    } else if let error = error {
                        print(error.localizedDescription)
                    }
                }
            }
            .alert(alertTitle, isPresented: $showToast) {}
            
            Button("Schedule Notification") {
                // Second, Schedule Notification
                let content = UNMutableNotificationContent()
                content.title = "Feed the cat"
                content.subtitle = "It looks hungry"
                content.sound = UNNotificationSound.default
                
                // show this notification five seconds from now
                let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)
                
                // choose a random identifier
                let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: trigger)
                
                // add our notification request
                UNUserNotificationCenter.current().add(request)
                
                showToast.toggle()
                alertTitle = "Notification is coming"
            }
        }
        .padding()
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

#pragma mark - Notifications
/// 添加系统通知状态的观察者
- (void)addObserverForSystemNotificationStatus {
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(checkNotificationAuthorization)
                                                 name:UIApplicationWillEnterForegroundNotification
                                               object:nil];
}
// 在 checkNotificationAuthorization 方法中检查通知权限
- (void)checkNotificationAuthorization {
    [[UNUserNotificationCenter currentNotificationCenter] getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
        dispatch_async(dispatch_get_main_queue(), ^{
            BOOL newAuthorizationStatus = self.isSystemNotificationOn;
            if (settings.authorizationStatus == UNAuthorizationStatusAuthorized) {
                newAuthorizationStatus = YES;
            } else {
                newAuthorizationStatus = NO;
            }
            // iOS 12.0 新增了 Provisional 的状态，无需获得用户授权也可发送 Deliver Quietly 的通知
            if (@available(iOS 12.0, *)) {
                if (settings.authorizationStatus == UNAuthorizationStatusProvisional) {
                    newAuthorizationStatus = YES;
                }
            }
            
            // 刷新表格
            if (newAuthorizationStatus != self.isSystemNotificationOn) {
                self.isSystemNotificationOn = newAuthorizationStatus;
                [self.tableView reloadData];
            }
        });
    }];
}

- (void)userNotificationCenter:(UNUserNotificationCenter *)center openSettingsForNotification:(UNNotification *)notification {
    NSURL *url = [NSURL URLWithString:@"https://google.com"];
    [self openTrdPartyURL:url];
}