This is a UISwitch with a block based hander for value change control events

ZUISwitch.h

//
//  ZUISwitch.h
//  zeebox
//
//  Created by Will on 26/10/2012.
//  Copyright (c) 2012 Electric Labs. All rights reserved.
//


@interface ZUISwitch : UISwitch

- (void)onValueChange:(void (^)(UISwitch *uiSwitch)) block;

@end

ZUISwitch.m

//
//  ZUISwitch.m
//  zeebox
//
//  Created by Will on 26/10/2012.
//  Copyright (c) 2012 zeebox. All rights reserved.
//

#import "ZUISwitch.h"

@interface ZUISwitch ()

@property (nonatomic, copy) void (^valueChangeBlock)(UISwitch *uiSwitch);

@end

@implementation ZUISwitch


- (void) awakeFromNib {
    [self commonInit];
}

- (id)init {
    self = [super init];
    if (self) {
        [self commonInit];
    }
    return self;
}

- (void)commonInit {
    [self addTarget:self action:@selector(switchValueChanged:) forControlEvents:UIControlEventValueChanged];
}


- (void)onValueChange:(void (^)(UISwitch *uiSwitch)) block {
    self.valueChangeBlock = block;
}


- (void)switchValueChanged:(id)sender {
    if(_valueChangeBlock) {
        _valueChangeBlock(self);
    }
}


@end