如何在 UNNotificationRequest 中设置重复间隔以及触发日期

Question

以前，我在我的应用程序中使用UILocalNotification进行提醒。

但如上所述 API 在 iOS 10.0 中已弃用，现在需要使用 UserNotifications Framework 的UNNotificationRequest 。

使用UILocalNotification我能够设置触发日期以及重复间隔如下：

UILocalNotification *localNotification = [[UILocalNotification alloc] init];

    NSDate *tomorrow = [NSDate dateWithTimeInterval:(24*60*60) sinceDate:[NSDate date]];
    localNotification.fireDate = tomorrow;


    if(repeatUnit!=0){
          localNotification.repeatInterval = NSWeekCalendarUnit;
    }

    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

在上面的代码中，我可以设置明天通知将被触发的日期，并且我还设置了从触发日期开始的 1 周重复间隔。

如何使用 UserNotifications Framework 的UNNotificationRequest实现这UNNotificationRequest 。

因为在新的 api 中，我们可以使用触发器UNCalendarNotificationTrigger和UNTimeintervalNotificationTrigger来启动UNNotificationRequest 。

有什么办法可以像UILocalNotification一样设置两者？

Answer 1

您仍然可以使用触发日期和重复间隔，但它不像以前那样明显。 当您初始化通知触发器时，您将其重复参数设置为YES 。 重复间隔由您通过dateMatching参数传递给触发器的日期组件定义：

每天重复：
只需传递日期组件小时，分钟，秒
⟶ 触发器每天都会在那个时间触发

每周重复：
还传递所需的工作日组件： weekday , hour , minute , second
⟶ 触发器将在每周那个工作日的那个时间触发

这是一个明天在同一时间发出通知并每周重复一次的示例：

目标-C：

UNMutableNotificationContent *notification = [[UNMutableNotificationContent alloc] init];

// find out what weekday is tomorrow
NSDate *sameTimeTomorrow = [NSDate dateWithTimeIntervalSinceNow:60*60*24];
NSInteger weekdayTomorrow = [[NSCalendar currentCalendar] component:NSCalendarUnitWeekday fromDate: sameTimeTomorrow];

// set the current time (without weekday)
unsigned unitFlags = NSCalendarUnitHour | NSCalendarUnitMinute |  NSCalendarUnitSecond;
NSDateComponents *firstFireDateComponents = [[NSCalendar currentCalendar] components:unitFlags fromDate:sameTimeTomorrow];

// add tomorrow's weekday
firstFireDateComponents.weekday = weekdayTomorrow;

// set a repeating trigger for the current time and tomorrow's weekday
// (trigger repeats every week on that weekday at the current time)
UNCalendarNotificationTrigger *notificationTrigger = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:firstFireDateComponents repeats:YES];

UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:@"notification" content:notification trigger:notificationTrigger];
[[UNUserNotificationCenter currentNotificationCenter] addNotificationRequest:request withCompletionHandler: nil];

迅速：

let notification = UNMutableNotificationContent()

// find out what weekday is tomorrow
let weekDayTomorrow = Calendar.current.component(.weekday, from: Date(timeIntervalSinceNow: 60*60*24))

// set the current time (without weekday)
var firstFireDateComponents = Calendar.current.dateComponents([.hour, .minute, .second], from: Date())

// add tomorrow's weekday
firstFireDateComponents.weekday = weekDayTomorrow

// set a repeating trigger for the current time and tomorrow's weekday
// (trigger repeats every week on that weekday at the current time)
let notificationTrigger = UNCalendarNotificationTrigger(dateMatching: firstFireDateComponents, repeats: true)

let request = UNNotificationRequest(identifier: "notification", content: notification, trigger: notificationTrigger)
UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)