每天在特定时间安排UILocalNotification

Question

我使用下面的代码来在特定时间安排本地通知.但通知是每分钟而不是一天后重复的.我是否错过了任何通知设置.我的时区是(亚洲/加尔各答(IST)偏移19800)并使用iPhone 4s.

- (void)applicationDidEnterBackground:(UIApplication *)application
{     
    NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar] ;
    NSDate *now = [NSDate date];
    NSDateComponents *components = [calendar components:(NSCalendarUnitYear | NSCalendarUnitMonth |  NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute) fromDate:now]; 
    [components setHour:12];
    [components setMinute:00];

    UILocalNotification *notification = [[UILocalNotification alloc]init];
    notification.fireDate = [calendar dateFromComponents:components];
    [notification setAlertBody:@"U got notification!!!"];
    // notification.soundName = UILocalNotificationDefaultSoundName;
    [[UIApplication sharedApplication] scheduleLocalNotification:notification]; 
}

Answer 1

你应该指定repeatInterval.

- (void)applicationDidEnterBackground:(UIApplication *)application
{     
    NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar] ;
    NSDate *now = [NSDate date];
    NSDateComponents *components = [calendar components:(NSCalendarUnitYear | NSCalendarUnitMonth |  NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute) fromDate:now]; 
    [components setHour:12];
    [components setMinute:00];

    UILocalNotification *notification = [[UILocalNotification alloc]init];
    notification.fireDate = [calendar dateFromComponents:components];
    notification.repeatInterval = NSDayCalendarUnit;
    [notification setAlertBody:@"U got notification!!!"];
    // notification.soundName = UILocalNotificationDefaultSoundName;
    [[UIApplication sharedApplication] scheduleLocalNotification:notification]; 
}