Calling instance method in class method with Singleton

Question

I have read about calling instance method in class method is the best way with Singleton.

I have tried it but it didn't work. I am trying to call the void method in @selector() but I couldn't. Please where would be my issue?

.H

+ (void)normalizeCell:(UITableViewCell *)cell withLables:(NSArray *)lbls sx:(CGFloat)sx widths:(NSArray *)widths;
- (void)edit;

.M

+ (void)normalizeCell:(UITableViewCell *)cell withLables:(NSArray *)lbls sx:(CGFloat)sx widths:(NSArray *)widths
{

    static PozisyonOzetiTableCell *sharedMyManager = nil;
static BOOL initialized = NO;

if(!initialized)
{
    initialized = YES;
    sharedMyManager = [[PozisyonOzetiTableCell alloc] init];
}
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

//// I have tried edit & [sharedMyManager edit]
[button addTarget:self action:@selector(edit) forControlEvents:UIControlEventTouchUpInside];

[button setImage:[UIImage imageNamed:@"settingKey.png"] forState:UIControlStateNormal];
button.frame = CGRectMake(-23, 0, 70, 40);
[cell.contentView addSubview:button];
}

- (void)edit
{
    NSLog(@"CLICKED");
}

Answer 1

In + method you can't use self for that puspose, because self in class method returns Class and not the instance.

replace

[button addTarget:self action:@selector(edit) forControlEvents:UIControlEventTouchUpInside];

with

[button addTarget:sharedMyManager action:@selector(edit) forControlEvents:UIControlEventTouchUpInside];

Of course , if your sharedMyManager is static field. And make sure that your sharedMyManager was already initialized before calling that method.