Replacing the class to subclass after loading a custom view from Interface Builder

CustomView.h

//
//  CustomView.h
//  IBSubclassTest
//
//  Created by Lukas Kubanek on 17.06.2014.
//  Copyright (c) 2014 Lukas Kubanek. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface CustomView : UIView

@end

CustomView.m

//
//  CustomView.m
//  IBSubclassTest
//
//  Created by Lukas Kubanek on 17.06.2014.
//  Copyright (c) 2014 Lukas Kubanek. All rights reserved.
//

#import "CustomView.h"
#import "SubclassCustomView.h"

@implementation CustomView

- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (self) {
        self.backgroundColor = [UIColor redColor];
    }
    return self;
}

- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder
{
    Class subclass = [SubclassCustomView class];
    
    return [[subclass alloc] initWithCoder:aDecoder];
}

@end

SubclassCustomView.h

//
//  SubclassCustomView.h
//  IBSubclassTest
//
//  Created by Lukas Kubanek on 17.06.2014.
//  Copyright (c) 2014 Lukas Kubanek. All rights reserved.
//

#import "CustomView.h"

@interface SubclassCustomView : CustomView

@end

SubclassCustomView.m

//
//  SubclassCustomView.m
//  IBSubclassTest
//
//  Created by Lukas Kubanek on 17.06.2014.
//  Copyright (c) 2014 Lukas Kubanek. All rights reserved.
//

#import "SubclassCustomView.h"

@implementation SubclassCustomView

- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (self) {
        self.backgroundColor = [UIColor blueColor];
    }
    return self;
}

@end