Iphone kCFCalendarUnitWeekday的传递值

Iphone kCFCalendarUnitWeekday的传递值,iphone,cocoa-touch,uilocalnotification,nsdatecomponents,Iphone,Cocoa Touch,Uilocalnotification,Nsdatecomponents,我想在某一天设置闹钟。我不知道如何设置kCFCalendarUnitWeekday的值。这是我的密码： NSDateComponents *components = [[NSDateComponents alloc] init]; UILocalNotification *localNotif = [[UILocalNotification alloc] init]; if (localNotif == nil) return; localNotif.fireDate = selecte

kCFCalendarUnitWeekday

NSDateComponents *components = [[NSDateComponents alloc] init];
UILocalNotification *localNotif = [[UILocalNotification alloc] init];
if (localNotif == nil)
    return;
localNotif.fireDate = selected;
localNotif.timeZone = [NSTimeZone defaultTimeZone];
localNotif.repeatCalendar = [NSCalendar currentCalendar];

if (isSun) {
    [components setWeekday:1];

    [localNotif setRepeatInterval:(NSInteger)components];
}

if (isMon) {
    [components setWeekday:2];
    [localNotif  setRepeatInterval:(NSInteger)components];  
}

NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components = [gregorian components:NSWeekdayCalendarUnit|NSYearCalendarUnit|NSDayCalendarUnit|NSHourCalendarUnit|NSMinuteCalendarUnit|NSSecondCalendarUnit fromDate:[NSDate date]];

    // this will set the weekday to sunday
[components setWeekday:1];
    // this is a new date on sunday
NSDate * newDate = [gregorian dateFromComponents:components];

// ... init code ...

// *** this the important date ***
localNotif.fireDate = dateOnASunday;
localNotif.timeZone = [NSTimeZone defaultTimeZone];
localNotif.repeatCalendar = NSWeekCalendarUnit;

... // add body etc. ...

[[UIApplication sharedApplication] scheduleLocalNotification:localNotif];
[localNotif release];

// repeats notification on a weekly basis
localNotif.repeatCalendar = NSWeekCalendarUnit;