Widget class which allows you to inherit from widget and create a xib file with the same name as the class. Once this is done you can reuse the xib anywhere by setting a view's subclass.

Widget.h

#import <UIKit/UIKit.h>

@interface Widget : UIView

@property (strong, nonatomic, readonly) IBOutlet UIView* view;

@end

Widget.m

#import "Widget.h"

@interface Widget ()

@property (strong, nonatomic, readwrite) UIView* view;

@end

@implementation Widget

- (void)awakeFromNib {
    [super awakeFromNib];
    [[NSBundle mainBundle] loadNibNamed:NSStringFromClass(self.class) owner:self options:nil];
    
    [self fitUIIfNecessary];
    
    [self addSubview:self.view];
}

- (void)fitUIIfNecessary {
    [self fitWidthWithContentIfNecessary];
    [self fitHeightWithContentIfNecessary];
}

- (void)fitWidthWithContentIfNecessary {
    bool flexableWidth = (self.view.autoresizingMask & UIViewAutoresizingFlexibleWidth);
    
    if (!flexableWidth)
        self.width = self.view.width;
}

- (void)fitHeightWithContentIfNecessary {
    bool flexableHeight = (self.view.autoresizingMask & UIViewAutoresizingFlexibleHeight);
    
    if (!flexableHeight)
        self.height = self.view.height;
}

@end