swift 快速创建一些基本控件

1.tableview 

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private lazy var cellId = "cellId" fileprivate lazy var tv : UITableView = {     let tv = UITableView(frame: CGRect.zero, style: UITableView.Style.grouped)     tv.register(UITableViewCell.self, forCellReuseIdentifier: cellId)     tv.translatesAutoresizingMaskIntoConstraints = false     tv.separatorStyle = .none     tv.backgroundColor = UIColor.white     tv.delegate = self     tv.dataSource = self     tv.bounces = false     return tv }()       // MARK: - UITableViewDelegate, UITableViewDataSource extension JYJYRtbMineVc:UITableViewDelegate, UITableViewDataSource{     func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {         return 1     }           func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {         let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath)                   return cell     } }

　　

2.流水布局

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let JYLoadImageCollectionCellId = "JYLoadImageCollectionCell" let JYAddImageCollectionCellId = "JYAddImageCollectionCell" private lazy var collectionView: UICollectionView = {     let layout = UICollectionViewFlowLayout()     let itemWidth = CGFloat(Int((JY_DEVICE_WIDTH - 10 * 4)/3))     let itemHeight = itemWidth     layout.itemSize = CGSize(width: itemWidth, height: itemHeight)     layout.minimumLineSpacing = 0     layout.minimumInteritemSpacing = 0     layout.sectionInset = UIEdgeInsets(top: 0, left: 10, bottom: 0, right: 10)           let collectionV = UICollectionView(frame: CGRect.zero, collectionViewLayout: layout)     collectionV.translatesAutoresizingMaskIntoConstraints = false     //        collectionV.register(UINib.init(nibName: "JYChooseShopTimeCollectionCell", bundle: nil), forCellWithReuseIdentifier: "JYChooseShopTimeCollectionCell")     collectionV.register(JYLoadImageCollectionCell.classForCoder(), forCellWithReuseIdentifier: JYLoadImageCollectionCellId)     collectionV.register(JYAddImageCollectionCell.classForCoder(), forCellWithReuseIdentifier: JYAddImageCollectionCellId)     collectionV.delegate = self     collectionV.dataSource = self     collectionV.backgroundColor = .white     collectionV.showsHorizontalScrollIndicator = false     collectionV.showsVerticalScrollIndicator = false           return collectionV }()       extension JYShopDetailFigureVc:UICollectionViewDataSource, UICollectionViewDelegate,UICollectionViewDelegateFlowLayout{     func numberOfSections(in collectionView: UICollectionView) -> Int {         return 1     }           func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {         return 1     }           func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {                   let cell = collectionView.dequeueReusableCell(withReuseIdentifier: JYAddImageCollectionCellId, for: indexPath) as! JYAddImageCollectionCell         return cell     }           func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {     } }