delegate not responding to method call

Question

Here are my relevant bits of code

This is my changeDaysViewController.h

@protocol changedays <NSObject>

    -(void)didChangeDays:(NSNumber *)position :(BOOL )on_off;

@end


#import "AddSiteViewController.h"
#import <UIKit/UIKit.h>


@interface daysoftheweekViewController : UITableViewController{


}
    @property (retain, nonatomic)NSMutableArray *daysOfTheWeek;
    @property (retain, nonatomic)NSMutableArray *daysOfTheWeekNames;
    @property (assign) id<changedays>deligate;
@end

This is the method in my changeDaysViewController.m

-(void)updateSwitch:(UIControl*)button withEvent:(UIEvent* )Event{
    UISwitch *swch=(UISwitch *)button;
    UITableViewCell *cell=(UITableViewCell*)swch.superview;
    if ([swch isOn]) {
         NSLog(@" is onchanged is %d",swch.tag);
        [self.deligate didChangeDays:[NSNumber numberWithInt:cell.tag] :YES];
    }else{
         NSLog(@" id off row changed is %d",swch.tag);
        [self.deligate didChangeDays:[NSNumber numberWithInt:cell.tag] :NO];
    }
     [self.deligate didChangeDays:[NSNumber numberWithInt:cell.tag] :NO];
       NSLog(@" row changed is %d",swch.tag);

}

in my add addsiteViewController.h I have implemented the protocol

@interface AddSiteViewController : UIViewController <CLLocationManagerDelegate,UITableViewDelegate ,UIActionSheetDelegate,changedays>{...

in the addsiteViewController.m I have

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        daysoftheweekViewController *daysvc=[[daysoftheweekViewController alloc]init];
        daysvc.deligate=self;

    }
    return self;
}

and i have

-(void)didChangeDays:(NSNumber *)position :(BOOL)on_off{
    [daysOfTheWeek replaceObjectAtIndex:[position integerValue] withObject:[NSNumber numberWithBool:on_off]];
    NSLog(@"days of the week changed in delegate");
}

edit 1 here is the cellorrowatindexpath

 -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSInteger row=[indexPath row];
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
   // if(cell==nil){
        cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
        UISwitch *sw= [[UISwitch alloc]initWithFrame:CGRectMake(200.0f, 5.0f, 75.0f, 30.0f)];
        cell.accessoryView=sw;
        sw.tag=row;
        [sw addTarget:self action:@selector(updateSwitch:withEvent:) forControlEvents:UIControlEventValueChanged];

   // }
    cell.textLabel.text=[daysOfTheWeekNames objectAtIndex:row];
    if([[daysOfTheWeek objectAtIndex:row]integerValue]==1){
        UISwitch *sw=(UISwitch *)cell.accessoryView;
        [sw setOn:YES];
    }else{
        UISwitch *sw=(UISwitch *)cell.accessoryView;
        [sw setOn:NO];
    }
    return cell;
}

when i change the switch on the UITableView , I get "is on changed is 1" logged on the console from the table view method -(void) updateSwitch . However, nothing happens in the -(void)didChangeDays method that is in my AddSiteViewController. What am I doing wrong?

Answer 1

I have found my own problem.

I was trying to set the delegate in the viewDidLoad method of AddSiteViewControler, where there was no class of changedaysViewController.

i removed

daysoftheweekViewController *daysvc=[[daysoftheweekViewController alloc]init];
        daysvc.deligate=self;

from my viewdidLoad and added this

controller.deligate=self;

to

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
    if([segue.identifier isEqualToString:@"daysoftheweek"]){
        daysoftheweekViewController *controller=[segue destinationViewController];
        controller.daysOfTheWeek=daysOfTheWeek;
        controller.daysOfTheWeekNames=daysOfTheWeekNames;
        controller.deligate=self;
    }

}

Thanks for all the comments

Answer 2

Try @property (nonatomic, retain) id<changedays>deligate; in your changeDaysViewController.h & @synthesize deligate changeDaysViewController.m