iOS ) collectionview 수평으로 페이징하기.

 let person_image_collectionview : UICollectionView =
    {
        let cv = UICollectionView(frame: CGRect.init(), collectionViewLayout: UICollectionViewFlowLayout.init())
        cv.translatesAutoresizingMaskIntoConstraints = false
        cv.backgroundColor = .black
		//한페이지당 페이징 설정하기
        cv.isPagingEnabled = true
        let layout = UICollectionViewFlowLayout()
        //수평으로 스크롤 가능하게하기
        layout.scrollDirection = .horizontal
        cv.collectionViewLayout = layout
        //cv.isScrollEnabled = false
        return cv
    }()