Swift UI学习UITableView and protocol use
Models: UserModel.swift Views: UserInfoCell.swift Controllers: RootViewController.swift, DetailViewController.swift AppDelegate.swift: import UIKit @UIApplicationMain class AppDelegate: UIResponder, UIApplicationDelegate { var window: UIWindow? func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary? ) -> Bool { self.window = UIWindow(frame: UIScreen.mainScreen().bounds) // let rootController = RootViewController(style: UITableViewStyle.Plain) let rootNav = UINavigationController(rootViewController: rootController) self.window!.rootViewController = rootNav // self.window!.backgroundColor = UIColor.whiteColor() self.window!.makeKeyAndVisible() return true } } UserModel.swift import Foundation // // @brief The model of user, using to store user datas // @author huangyibiao // class UserModel : NSObject { var userName: String ///< store user's name, optional var userID: Int ///< store user's ID var phone: String? ///< store user's telephone number var email: String? ///< store user's email // designated initializer init(userName: String, userID: Int, phone: String?, email: String?) { self.userName = userName self.userID = userID self.phone = phone self.email = email super.init() } } UserInfoCell.swift: import Foundation import UIKit // // @brief The cell of showing user infos // @author huangyibiao // class UserInfoCell : UITableViewCell { var userNameLabel : UILabel! var phoneLabel : UILabel! var emailLabel : UILabel! init(style: UITableViewCellStyle, reuseIdentifier: String!) { super.init(style: style, reuseIdentifier: reuseIdentifier) userNameLabel = UILabel(frame: CGRectMake(30, 0, 100, 44)) userNameLabel.backgroundColor = UIColor.clearColor() userNameLabel.font = UIFont.systemFontOfSize(14) self.contentView.addSubview(userNameLabel) phoneLabel = UILabel(frame: CGRectMake(120, 0, 200, 20)) phoneLabel.backgroundColor = UIColor.clearColor() phoneLabel.font = UIFont.systemFontOfSize(12) self.contentView.addSubview(phoneLabel) emailLabel = UILabel(frame: CGRectMake(120, 20, 200, 20)) emailLabel.backgroundColor = UIColor.clearColor() emailLabel.font = UIFont.systemFontOfSize(12) self.contentView.addSubview(emailLabel) } func configureCell(userModel: UserModel?) { if let model = userModel { userNameLabel.text = model.userName phoneLabel.text = model.phone emailLabel.text = model.email } } } RootViewController.swift: import Foundation import UIKit // // @brief 作为窗体的rootViewControllor // @author huangyibiao // class RootViewController : UITableViewController, DetailViewControllerDelegate { var dataSource = NSMutableArray() var currentIndexPath: NSIndexPath? override func viewDidLoad() { super.viewDidLoad() for index in 0...12 { let model = UserModel(userName: "name:\(index + 1)", userID: index, phone: "13877747982", email: "632840804@qq.com") dataSource.addObject(model) } self.title = "UITableViewDemo" } override func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int { return dataSource.count } override func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! { // can't use static? let cellIdentifier: String = "UserInfoCellIdentifier" // may be no value, so use optional var cell: UserInfoCell? = tableView.dequeueReusableCellWithIdentifier(cellIdentifier) as? UserInfoCell if cell == nil { // no value cell = UserInfoCell(style: UITableViewCellStyle.Default, reuseIdentifier: cellIdentifier) } let model: UserModel? = dataSource[indexPath.row] as? UserModel cell!.configureCell(model) return cell } override func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) { let detail = DetailViewController() detail.userModel = dataSource[indexPath.row] as? UserModel detail.delegate = self currentIndexPath = indexPath self.navigationController.pushViewController(detail, animated: true) } func changeItem(forUserModel userModel: UserModel?) { var index = 0 for index = 0; index < dataSource.count; index++ { let model = dataSource[index] as UserModel if model.userID == userModel?.userID { model.phone = userModel? .phone model.email = userModel?.email tableView.reloadRowsAtIndexPaths([currentIndexPath!], withRowAnimation: UITableViewRowAnimation.Fade) break } } } } DetailViewController.swift: import Foundation import UIKit // this delegate needs a @objc, because @optional is only for objective-c, not for swift @objc protocol DetailViewControllerDelegate : NSObjectProtocol { @optional func changeItem(forUserModel userModel: UserModel?) } class DetailViewController : UIViewController { var userModel: UserModel? var delegate: DetailViewControllerDelegate? override func viewDidLoad() { super.viewDidLoad() self.view.backgroundColor = UIColor.whiteColor() self.title = userModel? .userName let button = UIButton(frame: CGRectMake(10, 200, 300, 40)) button.setTitle("change", forState:UIControlState.Normal) button.backgroundColor = UIColor.redColor() button.addTarget(self, action: "onChangeButtonClick:", forControlEvents: UIControlEvents.TouchUpInside) self.view.addSubview(button) } func onChangeButtonClick(sender: UIButton!) { if userModel { userModel!.userName = "ChangeName" // changeItem needs to add a ? to the end, before (), because // this function is optional // delegate? 表示可能没有代理。而changeItem? 表示方法可能没有实现，这样写就算没有实现也没有问题 delegate?.changeItem? (forUserModel: userModel) self.navigationController.popViewControllerAnimated(true) } } } 效果图： 版权声明：本文博客原创文章，博客，未经同意，不得转载。 本文转自mfrbuaa博客园博客，原文链接：http://www.cnblogs.com/mfrbuaa/p/4727952.html，如需转载请自行联系原作者
