即使每天的特定时间过去了，如何发送本地通知？

更新了@ Paulw11对Swift 3.0的回答，并包装在一个函数中：

/// Set up the local notification for everyday/// - parameter hour: The hour in 24 of the day to trigger the notificationclass func setUpLocalNotification(hour: Int, minute: Int) {    // have to use NSCalendar for the components    let calendar = NSCalendar(identifier: .gregorian)!;    var dateFire = Date()    // if today's date is passed, use tomorrow    var fireComponents = calendar.components( [NSCalendar.Unit.day, NSCalendar.Unit.month, NSCalendar.Unit.year, NSCalendar.Unit.hour, NSCalendar.Unit.minute], from:dateFire)    if (fireComponents.hour! > hour         || (fireComponents.hour == hour && fireComponents.minute! >= minute) ) {        dateFire = dateFire.addingTimeInterval(86400)  // Use tomorrow's date        fireComponents = calendar.components( [NSCalendar.Unit.day, NSCalendar.Unit.month, NSCalendar.Unit.year, NSCalendar.Unit.hour, NSCalendar.Unit.minute], from:dateFire);    }    // set up the time    fireComponents.hour = hour    fireComponents.minute = minute    // schedule local notification    dateFire = calendar.date(from: fireComponents)!    let localNotification = UILocalNotification()    localNotification.fireDate = dateFire    localNotification.alertBody = "Record Today Numerily. Be completely honest: how is your day so far?"    localNotification.repeatInterval = NSCalendar.Unit.day    localNotification.soundName = UILocalNotificationDefaultSoundName;    UIApplication.shared.scheduleLocalNotification(localNotification);}