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1,下面的样例是给表格UITableView添加编辑功能:
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import UIKit class ViewController : UIViewController , UITableViewDelegate , UITableViewDataSource , UIGestureRecognizerDelegate { var tableView: UITableView ? var allnames: Dictionary < Int , [ String ]>? var adHeaders:[ String ]? override func loadView() { super .loadView() } override func viewDidLoad() { super .viewDidLoad() //初始化数据,这一次数据,我们放在属性列表文件里 self .allnames = [ 0:[ String ]([ "UILabel 标签" , "UIButton 按钮" ]), 1:[ String ]([ "UIDatePiker 日期选择器" , "UITableView 表格视图" ]) ]; println ( self .allnames) self .adHeaders = [ "常见 UIKit 控件" , "高级 UIKit 控件" ] //创建表视图 self .tableView = UITableView (frame: self .view.frame, style: UITableViewStyle . Grouped ) self .tableView!.delegate = self self .tableView!.dataSource = self //创建一个重用的单元格 self .tableView!.registerClass( UITableViewCell . self , forCellReuseIdentifier: "SwiftCell" ) self .view.addSubview( self .tableView!) //创建表头标签 var headerLabel = UILabel (frame: CGRectMake (0, 0, self .view.bounds.size.width, 30)) headerLabel.backgroundColor = UIColor .blackColor() headerLabel.textColor = UIColor .whiteColor() headerLabel.numberOfLines = 0 headerLabel.lineBreakMode = NSLineBreakMode . ByWordWrapping headerLabel.text = "UIKit 控件" headerLabel.font = UIFont .italicSystemFontOfSize(20) self .tableView!.tableHeaderView = headerLabel //绑定对长按的响应 var longPress = UILongPressGestureRecognizer (target: self , action: Selector ( "tableviewCellLongPressed:" )) //代理 longPress.delegate = self longPress.minimumPressDuration = 1.0 //将长按手势添加到需要实现长按操作的视图里 self .tableView!.addGestureRecognizer(longPress) } func tableviewCellLongPressed(gestureRecognizer: UILongPressGestureRecognizer ) { if (gestureRecognizer.state == UIGestureRecognizerState . Began ) { println ( "UIGestureRecognizerStateBegan" ); } if (gestureRecognizer.state == UIGestureRecognizerState . Changed ) { println ( "UIGestureRecognizerStateChanged" ); } if (gestureRecognizer.state == UIGestureRecognizerState . Ended ) { println ( "UIGestureRecognizerStateEnded" ); //在正常状态和编辑状态之间切换 if ( self .tableView!.editing == false ) { self .tableView!.setEditing( true , animated: true ) } else { self .tableView!.setEditing( false , animated: true ) } } } //在本例中,有2个分区 func numberOfSectionsInTableView(tableView: UITableView !) -> Int { return 2 } //返回表格行数(也就是返回控件数) func tableView(tableView: UITableView , numberOfRowsInSection section: Int ) -> Int { var data = self .allnames?[section] return data!.count } // UITableViewDataSource协议中的方法,该方法的返回值决定指定分区的头部 func tableView(tableView: UITableView , titleForHeaderInSection section: Int )-> String { var headers = self .adHeaders!; return headers[section]; } // UITableViewDataSource协议中的方法,该方法的返回值决定指定分区的尾部 func tableView(tableView: UITableView , titleForFooterInSection section: Int )-> String { var data = self .allnames?[section] return "有\(data!.count)个控件" } //创建各单元显示内容(创建参数indexPath指定的单元) func tableView(tableView: UITableView , cellForRowAtIndexPath indexPath: NSIndexPath ) -> UITableViewCell { //为了提供表格显示性能,已创建完成的单元需重复使用 let identify: String = "SwiftCell" //同一形式的单元格重复使用,在声明时已注册 let cell = tableView.dequeueReusableCellWithIdentifier(identify, forIndexPath: indexPath) as UITableViewCell cell.accessoryType = UITableViewCellAccessoryType . DisclosureIndicator var secno = indexPath.section var data = self .allnames?[secno] cell.textLabel?.text = data![indexPath.row] return cell } // UITableViewDelegate 方法,处理列表项的选中事件 func tableView(tableView: UITableView !, didSelectRowAtIndexPath indexPath: NSIndexPath !) { self .tableView!.deselectRowAtIndexPath(indexPath, animated: true ) var itemString = self .allnames![indexPath.section]![indexPath.row] var alertview = UIAlertView (); alertview.title = "提示!" alertview.message = "你选中了【\(itemString)】" ; alertview.addButtonWithTitle( "确定" ) alertview.show(); } func tableView(tableView: UITableView !, editingStyleForRowAtIndexPath indexPath: NSIndexPath !) -> UITableViewCellEditingStyle { if (indexPath.section == 1) { return UITableViewCellEditingStyle . Insert } return UITableViewCellEditingStyle . Delete } func tableView(tableView: UITableView !, titleForDeleteConfirmationButtonForRowAtIndexPath indexPath: NSIndexPath !) -> String ! { var data = self .allnames?[indexPath.section]! var itemString = data![indexPath.row] as String return "确定删除\(itemString)?" } func tableView(tableView: UITableView !, commitEditingStyle editingStyle: UITableViewCellEditingStyle , forRowAtIndexPath indexPath: NSIndexPath !) { if (editingStyle == UITableViewCellEditingStyle . Delete ) { self .allnames?[indexPath.section]?.removeAtIndex(indexPath.row) self .tableView!.reloadData() self .tableView!.setEditing( true , animated: true ) println ( "你确认了删除按钮" ) // Array } else if (editingStyle == UITableViewCellEditingStyle . Insert ) { self .allnames?[indexPath.section]?.insert( "插入一项新的" , atIndex: indexPath.row+1) println ( "你按下了插入按钮" ) self .tableView!.reloadData() } } override func didReceiveMemoryWarning() { super .didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } } |
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原文地址:http://www.cnblogs.com/Free-Thinker/p/4838232.html