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