Swift 语言概览 -自己在Xcode6 动手写2-tableView

 import UIKit

 class ViewController: UIViewController ,UITableViewDelegate, UITableViewDataSource
 {
     var tableView : UITableView?
     var items :NSMutableArray?
     var leftBtn:UIButton?

     override func viewDidLoad() {
         super.viewDidLoad()
         self.title = "I love Swift"
         self.items = NSMutableArray()
        // self.items?.addObject("1","2")
         // Do any additional setup after loading the view, typically from a nib.
         setupViews()
         setupRightBarButtonItem()
         setupLeftBarButtonItem();
     }

     func setupViews()
     {
         self.tableView = UITableView(frame:self.view!.frame)
         self.tableView!.delegate = self
         self.tableView!.dataSource = self
         self.tableView!.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")
         self.view?.addSubview(self.tableView)
     }

     func setupLeftBarButtonItem()
     {
         self.leftBtn = UIButton.buttonWithType(UIButtonType.Custom) as? UIButton
         self.leftBtn!.frame = CGRectMake(,,,)
         self.leftBtn?.setTitleColor(UIColor.redColor(), forState: UIControlState.Normal)
         self.leftBtn?.setTitle("Edit", forState: UIControlState.Normal)
         self.leftBtn!.tag =
         self.leftBtn!.userInteractionEnabled = false
         self.leftBtn?.addTarget(self, action: "leftBarButtonItemClicked", forControlEvents: UIControlEvents.TouchUpInside)
         var barButtonItem = UIBarButtonItem(customView: self.leftBtn)
         self.navigationItem!.leftBarButtonItem = barButtonItem
     }

     func setupRightBarButtonItem()
     {
         var barButtonItem = UIBarButtonItem(title: "Add", style: UIBarButtonItemStyle.Plain, target: self, action: "rightBarButtonItemClicked")
         self.navigationItem!.rightBarButtonItem = barButtonItem
     }

     func rightBarButtonItemClicked()
     {

         var row = self.items!.count
         var indexPath = NSIndexPath(forRow:row,inSection:)
         self.items?.addObject("")
         self.tableView?.insertRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Left)
          self.leftBtn!.userInteractionEnabled = true
     }

     func leftBarButtonItemClicked()
     {
         if (self.leftBtn!.tag == )
         {
             self.tableView?.setEditing(true, animated: true)
             self.leftBtn!.tag =
             self.leftBtn?.setTitle("Done", forState: UIControlState.Normal)
         }
         else
         {
             self.tableView?.setEditing(false, animated: true)
             self.leftBtn!.tag =
             self.leftBtn?.setTitle("Edit", forState: UIControlState.Normal)
         }

     }

     override func didReceiveMemoryWarning() {
         super.didReceiveMemoryWarning()
         // Dispose of any resources that can be recreated.
     }

     func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int
     {
         return self.items!.count
     }

     func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell!
     {
         let cell = tableView .dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as UITableViewCell
         cell.textLabel.text = String(format: "%i", indexPath.row+)
         return cell
     }

     func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool
     {
         return true
     }

     func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!)
     {
         self.items?.removeObjectAtIndex(indexPath.row)

         self.tableView?.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Top)
         if (self.items!.count == )
         {
              self.leftBtn!.userInteractionEnabled = false
         }

     }

      func tableView(tableView: UITableView!, editingStyleForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCellEditingStyle
     {
         return (UITableViewCellEditingStyle.Delete)
     }

     func tableView(tableView: UITableView!, canMoveRowAtIndexPath indexPath: NSIndexPath!) -> Bool
     {
          return true
     }

     func tableView(tableView: UITableView!, moveRowAtIndexPath sourceIndexPath: NSIndexPath!, toIndexPath destinationIndexPath: NSIndexPath!)
     {
         self.tableView?.moveRowAtIndexPath(sourceIndexPath, toIndexPath: destinationIndexPath)
         self.items?.exchangeObjectAtIndex(sourceIndexPath.row, withObjectAtIndex: destinationIndexPath.row)
     }

     func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!)
     {
         println("row = %d",indexPath.row)
     }

 }

分享一个官网文档的链接，有兴趣的童鞋可以去看看，有关OC 和 Swift 的兼容问题

https://developer.apple.com/library/prerelease/mac/documentation/Swift/Conceptual/BuildingCocoaApps/MixandMatch.html#//apple_ref/doc/uid/TP40014216-CH10-XID_75