ReusableView

ReusableView.h

#import <UIKit/UIKit.h>

IB_DESIGNABLE //Reusable Views loaded from a xib file, you can see them on storyboard

@interface ReusableView : UIView

@property (weak, nonatomic) IBOutlet UILabel *message;

@end

ReusableView.m

#import "EmptyStateView.h"

@implementation EmptyStateView

  #pragma mark - init methods

  - (instancetype)initWithFrame:(CGRect)frame {
      self = [super initWithFrame:frame];
      if (self) {
          // load view frame XIB
          [self commonSetup];
      }
      return self;
  }

  - (instancetype)initWithCoder:(NSCoder *)aDecoder {
      self = [super initWithCoder:aDecoder];
      if (self) {
          // load view frame XIB
          [self commonSetup];
      }
      return self;
  }

  #pragma mark - setup view

  - (UIView *)loadViewFromNib {
      NSBundle *bundle = [NSBundle bundleForClass:[self class]];

      // An exception will be thrown if the xib file with this class name not found,
      UIView *view = [[bundle loadNibNamed:NSStringFromClass([self class]) owner:self options:nil] firstObject];
      return view;
  }

  - (void)commonSetup {
      UIView *nibView = [self loadViewFromNib];
      nibView.frame = self.bounds;

      // the autoresizingMask will be converted to constraints, the frame will match the parent view frame
      nibView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

      // Adding nibView on the top of our view
      [self addSubview:nibView];
  }

  - (void)awakeFromNib {
      [super awakeFromNib];
  }

@end

ReusableView.xib

/* Set the file owner as the .h file above */