iphone – xcode – 按时间安排本地通知(每天早上6点)

发布时间：2020-12-14 17:49:31 所属栏目：百科来源：网络整理

导读：我正在使用 Xcode 4.3.2,如何在每天早上6点设置本地通知“dateToFire”？ -(void)notification{ UILocalNotification *localNotification = [[[UILocalNotification alloc] init] autorelease]; if (!localNotification) return; // Current date NSDate *da

我正在使用 Xcode 4.3.2,如何在每天早上6点设置本地通知“dateToFire”？

-(void)notification
{
    UILocalNotification *localNotification = [[[UILocalNotification alloc] init] autorelease];

    if (!localNotification) 
        return;

    // Current date
    NSDate *date = [NSDate date]; 
    NSDate *dateToFire = //Everyday: 6AM;

    // Set the fire date/time
    [localNotification setFireDate:dateToFire];
    [localNotification setTimeZone:[NSTimeZone defaultTimeZone]];
    [localNotification setAlertBody:@"Notification" ];      

    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self notification];
}

解决方法

使用CalendarComponents将小时设置为6,并将localNotification.repeatInterval设置为NSDayCalendarUnit

NSCalendar *calendar = [NSCalendar currentCalendar]; // gets default calendar
NSDateComponents *components = [calendar components:(NSYearCalendarUnit | NSMonthCalendarUnit |  NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit) fromDate:[NSDate date]]; // gets the year,month,day,hour and minutesfor today's date
[components setHour:18];
[components setMinute:0];

localNotification.fireDate = [calendar dateFromComponents:components];

（编辑：李大同）

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