[IOS]tableView的操作。

////  ViewController.swift//  try////  Created by Stary on 3/28/16.//  Copyright © 2016 Stary. All rights reserved.//import UIKitclass NewTableViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {    var array = [String](count: 50, repeatedValue: "yan")    var arrayIsMarked = [Bool](count: 51, repeatedValue: false)    // 必备的两个函数。    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {        return array.count    }    func numberOfSectionsInTableView(tableView: UITableView) -> Int {        return 1    }    // 对每一个cell的操作。    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {        // 每个自定义的cell都有一个identify        let identistring = "trys"        let cell = tableView.dequeueReusableCellWithIdentifier(identistring, forIndexPath: indexPath) as! NewTableViewCell        cell.ClassLabel.text = "Variable"        cell.DescriptionLabel.text = "Let's try"        cell.NewimageView.image = UIImage(named: "p1.jpg")        if arrayIsMarked[indexPath.row] {            cell.accessoryType = .Checkmark        } else {            cell.accessoryType = .None        }        return cell    }    // 按住某个cell的反应。    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {        let controller = UIAlertController(title: "Thanks", message: "\(array[0])", preferredStyle: .Alert)        let okAction = UIAlertAction(title: "Ok", style: .Default, handler: {            (action : UIAlertAction) -> Void in            let cell = tableView.cellForRowAtIndexPath(indexPath)            cell?.accessoryType = UITableViewCellAccessoryType.Checkmark            self.arrayIsMarked[indexPath.row] = true        })        tableView.deselectRowAtIndexPath(indexPath, animated: true)        let alert = UIAlertAction(title: "Cancel", style: .Cancel, handler: {            (action : UIAlertAction) -> Void in            let cell = tableView.cellForRowAtIndexPath(indexPath)            cell?.accessoryType = UITableViewCellAccessoryType.None            self.arrayIsMarked[indexPath.row] = false        })        controller.addAction(alert)        controller.addAction(okAction)        self.presentViewController(controller, animated: true, completion: nil)    }    // 把一个cell左拉后会出现的按键。    func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {        let deleteAction = UITableViewRowAction(style: UITableViewRowActionStyle.Destructive, title: "Delete", handler: {            (action: UITableViewRowAction, NSIndexPath) -> Void in            self.array.removeAtIndex(indexPath.row)            self.arrayIsMarked.removeAtIndex(indexPath.row)            tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Left)        })        let ChangeAction = UITableViewRowAction(style: UITableViewRowActionStyle.Normal, title: "Change") { (UITableViewRowAction, NSIndexPath) -> Void in            let Controller = UIAlertController(title: "Do you wanna change?", message: nil, preferredStyle: UIAlertControllerStyle.Alert)            let YesAction = UIAlertAction(title: "Yes", style: UIAlertActionStyle.Default, handler: {                action in                let controller = UIAlertController(title: "Thank you for your changing", message: nil, preferredStyle: UIAlertControllerStyle.Alert)                let cancelAction = UIAlertAction(title: "Bye", style: UIAlertActionStyle.Cancel, handler: nil)                controller.addAction(cancelAction)                self.presentViewController(controller, animated: true, completion: nil)            })            let NoAction = UIAlertAction(title: "No", style: .Cancel, handler: nil)            Controller.addAction(YesAction)            Controller.addAction(NoAction)            self.presentViewController(Controller, animated: true, completion: nil)        }        return [deleteAction, ChangeAction]    }    // 返回每个cell的高度。    func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {        return 80    }}

tableView还要注意设定delegate & datasource的委托。