ScrollView created programmatically with AutoLayout, using Masonry

ScrollView.m

self.scrollView = [UIScrollView new];
self.scrollView.pagingEnabled = YES;
self.scrollView.directionalLockEnabled = YES;
self.scrollView.showsHorizontalScrollIndicator = NO;
self.scrollView.showsVerticalScrollIndicator = NO;

self.contentView = [UIView new];
[self.scrollView addSubview:self.contentView];
[self.contentView updateConstraints:^(MASConstraintMaker *make) {
    make.edges.equalTo(self.scrollView);
    make.height.equalTo(self.scrollView);
}];

UIView *lastElementView;

for (NSString *imageUrl in self.images) {
    
    UIImageView *imageView = [UIImageView new];
    imageView.contentMode = UIViewContentModeScaleAspectFill;
    imageView.clipsToBounds = YES;
    [imageView sd_setImageWithURL:[NSURL URLWithString:imageUrl]];
    
    [self.contentView addSubview:imageView];
    
    [imageView updateConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(lastElementView ? lastElementView.right : self.contentView.left);
        make.top.equalTo(self.contentView);
        make.height.equalTo(self.contentView);
        make.width.equalTo(self.scrollView);
    }];
    
    lastElementView = imageView;
}

[self.contentView updateConstraints:^(MASConstraintMaker *make) {
    make.right.equalTo(lastElementView);
}];