accessoryViewにUISwitchを仕掛けたCell

SwitchCell.h

#import <UIKit/UIKit.h>

// delegate method定義
@protocol UITableViewDelegateSwitchCell <UITableViewDelegate>
@optional
-(void)tableView:(UITableView *)tableView didChangeValue:(BOOL)value forRowWithIndexPath:(NSIndexPath *)indexPath;

@end

@interface SwitchCell : UITableViewCell

-(UISwitch *)switchView;

@end

SwitchCell.m

#import "SwitchCell.h"
#import "UITableViewCell+IndexPath.h"

@implementation SwitchCell
{
    UISwitch *_switchView;
}

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        // Initialization code
        [self setup];
    }
    return self;
}

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

-(void)setup
{
    _switchView = [[UISwitch alloc] init];
    // 値の変更を受け取る
    [_switchView addTarget:self action:@selector(valueChanged:) forControlEvents:UIControlEventValueChanged];
    self.accessoryView = _switchView;
}

-(UISwitch *)switchView
{
    return _switchView;
}

-(void)valueChanged:(id)sender
{
    // tableViewのdelegateに追加したdelegateメソッドを呼び出す
    if ([(id <UITableViewDelegateSwitchCell>)self.tableView.delegate respondsToSelector:@selector(tableView:didChangeValue:forRowWithIndexPath:)]) {
        [(id <UITableViewDelegateSwitchCell>)self.tableView.delegate tableView:self.tableView
                                                               didChangeValue:self.switchView.on
                                                          forRowWithIndexPath:self.indexPath];
    }
}

@end