Swift 语言概览 -自己在Xcode6 动手写2-tableView

  1 import UIKit
  2 
  3 class ViewController: UIViewController ,UITableViewDelegate, UITableViewDataSource
  4 {
  5     var tableView : UITableView?
  6     var items :NSMutableArray?
  7     var leftBtn:UIButton?
  8                             
  9     override func viewDidLoad() {
 10         super.viewDidLoad()
 11         self.title = "I love Swift"
 12         self.items = NSMutableArray()
 13        // self.items?.addObject("1","2")
 14         // Do any additional setup after loading the view, typically from a nib.
 15         setupViews()
 16         setupRightBarButtonItem()
 17         setupLeftBarButtonItem();
 18     }
 19     
 20     func setupViews()
 21     {
 22         self.tableView = UITableView(frame:self.view!.frame)
 23         self.tableView!.delegate = self
 24         self.tableView!.dataSource = self
 25         self.tableView!.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")
 26         self.view?.addSubview(self.tableView)
 27     }
 28     
 29     func setupLeftBarButtonItem()
 30     {
 31         self.leftBtn = UIButton.buttonWithType(UIButtonType.Custom) as? UIButton
 32         self.leftBtn!.frame = CGRectMake(0,0,50,40)
 33         self.leftBtn?.setTitleColor(UIColor.redColor(), forState: UIControlState.Normal)
 34         self.leftBtn?.setTitle("Edit", forState: UIControlState.Normal)
 35         self.leftBtn!.tag = 100
 36         self.leftBtn!.userInteractionEnabled = false
 37         self.leftBtn?.addTarget(self, action: "leftBarButtonItemClicked", forControlEvents: UIControlEvents.TouchUpInside)
 38         var barButtonItem = UIBarButtonItem(customView: self.leftBtn)
 39         self.navigationItem!.leftBarButtonItem = barButtonItem
 40     }
 41     
 42     func setupRightBarButtonItem()
 43     {
 44         var barButtonItem = UIBarButtonItem(title: "Add", style: UIBarButtonItemStyle.Plain, target: self, action: "rightBarButtonItemClicked")
 45         self.navigationItem!.rightBarButtonItem = barButtonItem
 46     }
 47     
 48     func rightBarButtonItemClicked()
 49     {
 50       
 51         var row = self.items!.count
 52         var indexPath = NSIndexPath(forRow:row,inSection:0)
 53         self.items?.addObject("1")
 54         self.tableView?.insertRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Left)
 55          self.leftBtn!.userInteractionEnabled = true
 56     }
 57     
 58     func leftBarButtonItemClicked()
 59     {
 60         if (self.leftBtn!.tag == 100)
 61         {
 62             self.tableView?.setEditing(true, animated: true)
 63             self.leftBtn!.tag = 200
 64             self.leftBtn?.setTitle("Done", forState: UIControlState.Normal)
 65         }
 66         else
 67         {
 68             self.tableView?.setEditing(false, animated: true)
 69             self.leftBtn!.tag = 100
 70             self.leftBtn?.setTitle("Edit", forState: UIControlState.Normal)
 71         }
 72         
 73     }
 74     
 75     
 76     override func didReceiveMemoryWarning() {
 77         super.didReceiveMemoryWarning()
 78         // Dispose of any resources that can be recreated.
 79     }
 80     
 81     func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int
 82     {
 83         return self.items!.count
 84     }
 85     
 86     func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell!
 87     {
 88         let cell = tableView .dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as UITableViewCell
 89         cell.textLabel.text = String(format: "%i", indexPath.row+1)
 90         return cell
 91     }
 92     
 93     func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool
 94     {
 95         return true
 96     }
 97     
 98     func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!)
 99     {
100         self.items?.removeObjectAtIndex(indexPath.row)
101     
102         self.tableView?.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Top)
103         if (self.items!.count == 0)
104         {
105              self.leftBtn!.userInteractionEnabled = false
106         }
107        
108     }
109     
110      func tableView(tableView: UITableView!, editingStyleForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCellEditingStyle
111     {
112         return (UITableViewCellEditingStyle.Delete)
113     }
114     
115     func tableView(tableView: UITableView!, canMoveRowAtIndexPath indexPath: NSIndexPath!) -> Bool
116     {
117          return true
118     }
119     
120     func tableView(tableView: UITableView!, moveRowAtIndexPath sourceIndexPath: NSIndexPath!, toIndexPath destinationIndexPath: NSIndexPath!)
121     {
122         self.tableView?.moveRowAtIndexPath(sourceIndexPath, toIndexPath: destinationIndexPath)
123         self.items?.exchangeObjectAtIndex(sourceIndexPath.row, withObjectAtIndex: destinationIndexPath.row)
124     }
125     
126     func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!)
127     {
128         println("row = %d",indexPath.row)
129     }
130     
131     
132     
133     
134     
135     
136 
137 }
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