iOS 每天在 Xamarin Forms 中重复闹钟

Question

我试图在我的 Xamarin Forms 中每天同时重复一个闹钟。但是 iOS 版本不会重复，但只会在指定的日期和时间出现一次。我正在将 DateTime 转换为 NSPDateComponents 并将其传递给 UNCalendarNotificationTrigger 以创建警报。日期时间值正确，但重复无效。

public static NSDateComponents ToNSDateComponents(this DateTime dt)
{
  var d = new NSDateComponents
  {
     Hour = dt.Hour,
     Minute = dt.Minute,
     Second = dt.Second,
     Month = dt.Month,
     Year = dt.Year,
     Day = dt.Day,
     TimeZone = NSTimeZone.SystemTimeZone
  };
  return d;
}

// notifyDate returns (e.g 16/11/2020 10:00 so I want the alarm to repeat every day at 10:00)
var trigger = UNCalendarNotificationTrigger.CreateTrigger(notifyDate.ToNSDateComponents(), true);
var requestID = "request_" + id;
var request = UNNotificationRequest.FromIdentifier(requestID, content, trigger);
UNUserNotificationCenter.Current.AddNotificationRequest(request, (err) => {
if (err != null){
}
});

Answer 1

您设置的是特殊日期，因此只能重复一次。

这里是每天09:30重复闹钟的例子，你可以看看：

// 1
var dateComponents = new NSDateComponents();
dateComponents.Hour = 9;
dateComponents.Minute = 30;
var trigger = UNCalendarNotificationTrigger.CreateTrigger(dateComponents, true);

// 2
var content = new UNMutableNotificationContent();
content.Title = "Daily reminder";
content.Body = "Enjoy your day!";

var requestID = "request_" + id;
var request = UNNotificationRequest.FromIdentifier(requestID, content, trigger);

// 3
UNUserNotificationCenter.Current.AddNotificationRequest(request, (err) => {
    if (err != null)
    {
    }
});

iOS 每天在 Xamarin Forms 中重复闹钟

Repeat alarm every day in Xamarin Forms in iOS

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