[001][iOS-Swift]TableViewCell左滑删

Github: https://github.com/ZIYOCHIRO/DesignTips/tree/master/UITableView-Delete

CornerRectCell
customDeleteButton

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1.自定义圆角TableViewCell

新建DeleteTableViewCell以及DeleteTableViewCell.xib文件

customTableViewCell
在DeleteTableViewCell的ContentView中添加一个View作为CornerView，并设置其Top及Bottom Constraints与ContentView的间隔为7.5，以实现每个cell中间的间隔。
AddCornerViewAndLabel
将CornerView以及Lable连接到DeleteTableViewCell 的文件里，设置cornerView
的CornerRadiuscornerView.setCornerRadius(with: 10), 设置Cell的选中样式为无self.selectionStyle = .none

//  DeleteTableViewCell.swift
//  UITableView-Delete
import UIKit

class DeleteTableViewCell: UITableViewCell {
    @IBOutlet weak var cornerView: UIView!
    
    @IBOutlet weak var contentLabel: UILabel!
    
    override func awakeFromNib() {
        super.awakeFromNib()
        cornerView.setCornerRadius(with: 10)
        // Initialization code
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)
        self.selectionStyle = .none

        // Configure the view for the selected state
    }
    
}

extension UIView {
    
    func setCornerRadius(with Radius: CGFloat) {
        self.layer.cornerRadius = Radius
    }
    
    func setShadow(withRadius Radius: CGFloat) {
        self.layer.cornerRadius = Radius
        self.layer.shadowOffset = CGSize(width: 0, height: 0)
        self.layer.shadowColor = UIColor.lightGray.cgColor
        self.layer.shadowOpacity = 0.4
        self.layer.shadowRadius = 4
        self.layer.masksToBounds = false
        
    }
}

2.自定义侧滑删除按钮

自定义TableView的侧滑删除按钮，实际上就是要自定义一个TableView，改变其侧滑View里的button样式。
cellHeight 为每个cell的实际高度，也就是Cell的Corner View的高度，而不是Content View 的高度
buttonColor 为侧滑删除按钮的颜色

//  DeleteTableView.swift
//  UITableView-Delete

import UIKit

class DeleteTableView: UITableView {
    
    @IBInspectable var cellHeight: CGFloat = 60 {
        didSet {
            layoutSubviews()
        }
    }
    
    @IBInspectable var buttonColor: UIColor = .red {
        didSet {
            layoutSubviews()
        }
    }
    
    var buttonTitle: String = "删除"
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        if #available(iOS 11.0, *) {
            for subview in self.subviews where subview.isKind(of: NSClassFromString("UISwipeActionPullView")!) {
                
                for view in subview.subviews where view.isKind(of: NSClassFromString("UISwipeActionStandardButton")!) {
                    
                    
                    view.frame = CGRect.init(x: 0, y: 7.5, width: 60, height: cellHeight)
                    
                    for subSubView in view.subviews where view.isKind(of: UIButton.self) {
                        subSubView.removeFromSuperview()
                    }
                 
                    let deleteButton = setDeleteButton(frame: view.frame)
                    view.addSubview(deleteButton)
                    view.bringSubviewToFront(deleteButton)
                    
                }
            }
            
        } else {    // IOS 10以及以下
            for subview in subviews where subview.isKind(of: NSClassFromString("UITableViewCellDeleteConfirmationView")!) {
                subview.backgroundColor = buttonColor
                
                for view in subview.subviews where view.isKind(of: UIButton.self) {
                    view.backgroundColor = buttonColor
                    
                    view.backgroundColor = UIColor.clear
                    view.frame = CGRect.init(x: 0, y: 7.5, width: 60, height: cellHeight )
                    
                    let deleteButton = setDeleteButton(frame: view.frame)
                    view.addSubview(deleteButton)
                    view.bringSubviewToFront(deleteButton)
                }
            }
        }
    }
    
    private func setDeleteButton(frame: CGRect) -> UIButton {
        let deleteButton = UIButton(type: .custom)
        deleteButton.frame = CGRect.init(x: 10, y: 0, width: cellHeight, height: cellHeight )
        deleteButton.backgroundColor = buttonColor
        deleteButton.setTitle(buttonTitle, for: .normal)
        deleteButton.setTitleColor(UIColor.white, for: .normal)
        deleteButton.titleLabel?.numberOfLines = 0
        deleteButton.titleLabel?.font = UIFont.systemFont(ofSize: 15)
        deleteButton.setCornerRadius(with: cellHeight / 2)
        
        return deleteButton
    }

}

3.使用自定义的TableView（带有自定义的侧滑按钮）以及自定的Cell

添加一个TableView，设置其class为DeleteTableView,并设置其cell高度，Button的颜色

DeleteTableView
setCellHeightAndButtonColor

将tableView连接到viewController，在viewDidLoad方法里为tableView注册自定义的cell，不要忘了设置cell的identifier

//  ViewController.swift
//  UITableView-Delete

import UIKit

class ViewController: UIViewController {
    
    var exampleContent: [String] = ["item1", "item2", "item3", "item4", "item5"]

    @IBOutlet weak var exampleTableView: UITableView!
    override func viewDidLoad() {
        super.viewDidLoad()
        
        exampleTableView.delegate = self
        exampleTableView.dataSource = self
        exampleTableView.separatorStyle = .none
        exampleTableView.register(UINib.init(nibName: "DeleteTableViewCell", bundle: nil), forCellReuseIdentifier: "DeleteTableViewCell")
        
    }
}

extension ViewController: UITableViewDelegate, UITableViewDataSource {
    
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 80
    }
    
    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return exampleContent.count
    }
    
    func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
        return 10
    }
    
    func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
        let view = UIView()
        view.backgroundColor = UIColor.clear
        return view
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "DeleteTableViewCell", for: indexPath) as! DeleteTableViewCell
        cell.contentLabel.text = exampleContent[indexPath.row]
        
        return cell
    }
    
    func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
        let delete = UITableViewRowAction.init(style: .default, title: "删除") { (action, indexpath) in
        }
        delete.backgroundColor = UIColor.lightGray
        return [delete]
    }
    
    
}