NotificationCenter注册的选择器未调用 [英] NotificationCenter registered selector is not called

问题描述

我目前在下面有以下代码，以查看这一天是否已过，但似乎无法正常运行.我编码正确了吗?

I currently have this code below to see if the day has elapsed, but it doesn't seem to be working. Have I coded this correctly?

NotificationCenter.default.addObserver(self, selector:"calendarDayDidChange:", name:NSNotification.Name.NSCalendarDayChanged, object:nil)

func calendarDayDidChange(notification : NSNotification) {
    // code to respond to notification
}

推荐答案

我认为您注册观察员的方式不正确.请尝试以下检查.

I think the way you registered observer is not correct. Please try the below and check.

NotificationCenter.default.addObserver(self, selector:#selector(self.calendarDayDidChange(notification:)), name:NSNotification.Name.NSCalendarDayChanged, object:nil)

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