Question

我想根据用户输入设置每日闹钟。就像用户将从日期选择器中选择时间＆＃34; 10:30＆＃34;，然后我需要每天在那个时间设置闹钟。我写了以下代码：

func setAlarmAtTime(#time:NSString, withMessage message:NSString){
    var loacalNotification = UILocalNotification();
    var calendar = NSCalendar.currentCalendar();
    calendar.timeZone = NSTimeZone.localTimeZone()
    var components = calendar.components(NSCalendarUnit.CalendarUnitYear | NSCalendarUnit.MonthCalendarUnit | NSCalendarUnit.DayCalendarUnit, fromDate: NSDate.date());
    NSLog("%@",NSDate.date())
    NSLog(time);
    var timeComponents = time.componentsSeparatedByString(":");
    components.hour = timeComponents[0].integerValue;
    components.minute = timeComponents[1].integerValue;
    if components.isValidDateInCalendar(calendar){
        var fireDate = calendar.dateFromComponents(components);
        NSLog("%@",fireDate!);
        loacalNotification.repeatInterval = NSCalendarUnit.CalendarUnitDay;
        loacalNotification.timeZone = NSTimeZone.localTimeZone();
        loacalNotification.fireDate = fireDate;
        loacalNotification.repeatInterval = NSCalendarUnit.CalendarUnitDay;
        loacalNotification.soundName = UILocalNotificationDefaultSoundName;
        loacalNotification.alertBody = message;
    }

但它显示基于时区的不同时间以下是我尝试在6:40设置闹钟时的行为：

Current Date:  2014-08-12 12:07:21 +0000
Alarm Time: 6:40
Fire Date: 2014-08-12 01:10:00 +0000

我尝试将时区设置为本地和当前，但没有任何作用：（

Answer 1

        NSDateFormatter *df = [[NSDateFormatter alloc] init];
        [df setDateFormat:@"dd-MMM-yyyy HH:mm"];
        NSDate *reminderDate = [df dateFromString:self.lblDate.text];
        // Schedule the notification
        UILocalNotification* localNotification = [[UILocalNotification alloc] init];
        localNotification.fireDate = reminderDate;
        localNotification.alertBody = self.txtName.text;
        localNotification.alertAction = @"Show me the item";
        localNotification.timeZone = [NSTimeZone defaultTimeZone];
        localNotification.soundName =@"sound.mp3";
        NSMutableDictionary *notifyDict = [[NSMutableDictionary alloc] init];
        [notifyDict setValue:self.lblType.text forKey:NOTIFICATION_TYPE];
        [notifyDict setValue:self.txtName.text forKey:NOTIFICATION_TITLE];
        if (![self.tvDescription.text isEqualToString:@"Write Description"]) {
            [notifyDict setValue:self.tvDescription.text forKey:NOTIFICATION_DESCRIPTION];
        }
        [notifyDict setValue:self.lblDate.text forKey:NOTIFICATION_DATE];
        localNotification.userInfo = notifyDict;
        localNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;
        [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
        [self.navigationController popViewControllerAnimated:YES];
        [[NSNotificationCenter defaultCenter] postNotificationName:@"reloadData" object:self];

Answer 2

给出的时间是格林威治标准时间（GMT）

我们只需要设置

localNotification.timeZone = [NSTimeZone systemTimeZone];

因为它代表您的设备或系统时区并安排您的应用

[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

本地通知设置了开火时间

2 个答案: