iOS開發——UI篇Swift篇&UISlider

標籤：

UISlider

 

  1    2     override func viewDidLoad() {  3         super.viewDidLoad()  4           5         titleLabel.text = titleString  6           7           8         // Do any additional setup after loading the view.  9          10          11          12          13         //建立 14         var slider:UISlider = UISlider(frame: CGRectMake(20, 100, 200, 60)) 15          16         //添加到視圖上 17         self.view.addSubview(slider) 18          19         //設定最小值 20         slider.minimumValue = 10 21          22         //設定最大值 23         slider.maximumValue = 80 24          25         //設定預設值 26         slider.value = 30 27          28         //設定左端圖片 29         slider.setMinimumTrackImage(UIImage(named: "minimumTrackImage"), forState: UIControlState.Normal) 30          31         //設定又端圖片 32         slider.setMaximumTrackImage(UIImage(named: "maximumTrackImage"), forState: UIControlState.Normal) 33          34          35          36         //讀取當滑塊控制項的值： 37         var value = slider.value 38         println(value) 39          40          41         //添加通知，擷取值改變 42         slider.addTarget(self, action: "sliderValueChange:", forControlEvents: UIControlEvents.ValueChanged) 43          44         //continuous預設是true，設定成false後，只有停止拖動才會觸發sliderValueChange:方法 45         slider.continuous = false 46          47          48          49         //-----自訂滑塊 50          51         //定義左右圖片 52         var stetchLeftTrack:UIImage! = UIImage(named: "leftTrack.png") 53         var stetchRightTrack:UIImage! = UIImage(named: "rightTrack.png") 54         55         //定義滑塊圖片 56          var thumbImage:UIImage! = UIImage(named: "thumbImage.png") 57          58         //建立UISlider對象 59         var newSlider:UISlider = UISlider(frame: CGRectMake(30, 300, 257, 8)) 60         newSlider.backgroundColor = UIColor.clearColor() 61         newSlider.minimumValue = 0.5 62         newSlider.maximumValue = 1.5 63         newSlider.value = 1.0 64          65         //設定左右圖片 66         newSlider.setMinimumTrackImage(stetchLeftTrack, forState: UIControlState.Normal) 67         newSlider.setMaximumTrackImage(stetchRightTrack, forState: UIControlState.Normal) 68          69         //設定拖動圓點的圖片，注意這裡要加UIControlState.Highlighted的狀態，否則當拖動滑塊時滑塊將變成原生的控制項 70         newSlider.setThumbImage(thumbImage, forState: UIControlState.Normal) 71         newSlider.setThumbImage(thumbImage, forState: UIControlState.Highlighted) 72          73         //添加通知，擷取值改變 74         newSlider.addTarget(self, action: "newSliderValueChange:", forControlEvents: UIControlEvents.ValueChanged) 75          76          77         //滑動拖動後的事件 78         newSlider.addTarget(self, action: "newSliderTouchUpInside:", forControlEvents: UIControlEvents.TouchUpInside) 79          80         self.view.addSubview(newSlider) 81     } 82  83     override func didReceiveMemoryWarning() { 84         super.didReceiveMemoryWarning() 85         // Dispose of any resources that can be recreated. 86     } 87      88  89     /* 90     // MARK: - Navigation 91  92     // In a storyboard-based application, you will often want to do a little preparation before navigation 93     override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) { 94         // Get the new view controller using segue.destinationViewController. 95         // Pass the selected object to the new view controller. 96     } 97     */ 98      99     100     //slider值改變觸發的方法101     func sliderValueChange(sender: AnyObject?)102     {103 //        var newSlider:UISlider = sender as UISlider104         105         //2015年5月2後修改106         var newSlider:UISlider = sender as! UISlider107         var value = newSlider.value108         println(value)109     }110     111     112     //自訂滑塊使用113     114     //拖動事件115     func newSliderValueChange(sender: AnyObject?)116     {117 //        var newSlider:UISlider = sender as UISlider118         119         //2015年5月2後修改120         var newSlider:UISlider = sender as! UISlider121         println(newSlider.value)122     }123     124     //滑動拖動後的事件125     func newSliderTouchUpInside(sender: AnyObject?)126     {127 //        var newSlider:UISlider = sender as UISlider128         129         //2015年5月2後修改130         var newSlider:UISlider = sender as! UISlider131         println(newSlider.value)132     }133     

 

 

 

 

iOS開發——UI篇Swift篇&UISlider