Question

I have NSMutableArray “day” which contain (6 NSMutable arrays) arrays contain

class Lesson{
    NSString *time1;
    NSString *time2;
    NSString *predmet;
    NSString *namPrepod;
    NSString *zamet;
}

I have function to get current week, day, lesson

-(Lesson *)lessonInWeek:(int)week inDay:(int)day lessonNumber:(int)lNumber
{
    Week *currentWeek = nil;
    if(week)    
        currentWeek = nechetNedel;
    else        
        currentWeek = chetNedel;

    NSMutableArray *dayArray = [currentWeek.days objectAtIndex:day];
    Lesson *lesson = [dayArray objectAtIndex:lNumber];

    return lesson;
}

with this function I show in

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
......
 Lesson *item = [[Singleton sharedInstance] lessonInWeek:segmentedControl.selectedSegmentIndex inDay:indexPath.section lessonNumber:indexPath.row];

    ....
    time1.text= item.time1;
    ....

    time2.text= item.time2;
    ....
    predmet.text=item.predmet;
    .....
    namePrepod.text=item.namPrepod;
    ......
    zamet.text=item.zamet;
    ....

who can I delete a row with this function without the use of ?

if(segmentedControl.selectedSegmentIndex==0)
if(section==1)
......

The function need to edit for delete a row.

Answer 1

Add a deleteLessonInWeek:inDay:lessonNumber: to your singleton class, and call it from your tableView:commitEditingStyle:forRowAtIndexPath: implementation:

- (void) tableView:(UITableView*)tableView
    commitEditingStyle:(UITableViewCellEditingStyle)editingStyle
    forRowAtIndexPath:(NSIndexPath*)indexPath {
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        [[Singleton sharedInstance] deleteLessonInWeek:segmentedControl.selectedSegmentIndex inDay:indexPath.section lessonNumber:indexPath.row];
    }
}

The implementation iside the Singleton could use the same clean pattern of looking up day array, then the lesson inside its day, and then deleting the requested item:

-(void)deleteLessonInWeek:(int)week inDay:(int)day lessonNumber:(int)lNumber {
    // Choose odd or even week:
    Week *currentWeek = week ? nechetNedel : chetNedel;
    NSMutableArray *dayArray = [currentWeek.days objectAtIndex:day];
    [dayArray removeObjectAtIndex:lNumber];
}