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In the current compass app, you can slide between the compass and a level. How would I create that same effect in Swift? Well, I am trying to create an app mainly to learn. I want to create a notepad app where if you swipe to to the right, a font selection appears, and if you swipe to the left, a list of previous notes appear. So far, this is my code

    var noteArray: Dictionary<String,String> = [:]
    var selectTextView = UIButton()
    var selectTextField = UITextField()
    var selectString: String = ""
    override func viewDidLoad() {
    super.viewDidLoad()
    self.view.backgroundColor = UIColor.whiteColor()
    var widthField = self.view.bounds.size.width - 10
    var heightField = self.view.bounds.size.height - 69 - 221 - 38
    println(heightField)
    println(widthField)
    var textFieldString: String! = ""
    //Set up resizable Button Image
    let buttonImage: UIImage = UIImage(named:"whiteButtonLong")
    let buttonImageHighlight: UIImage = UIImage(named:"whiteButtonHighlightLong")
    //Set up text field
    self.textView = UITextView(frame: CGRectMake(5, 64, widthField, heightField))
    self.textView.backgroundColor = UIColor.redColor()
    self.view.addSubview(self.textView)
    textView.becomeFirstResponder()
    //Set up the New button
    var newButtonString: String! = "New Note"
    var heightButton = 568 - heightField - 1000
    var widthButton = (widthField/2) - 2
    let floatInt: CInt = 3
    let newButton = UIButton(frame: CGRect(x: 5, y: 5, width: widthButton, height: 50))
    UIButton.buttonWithType(UIButtonType.System)
    newButton.setTitle(newButtonString,forState: UIControlState.Normal)
    newButton.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
    newButton.setBackgroundImage(buttonImage, forState: UIControlState.Normal)
    newButton.setBackgroundImage(buttonImageHighlight, forState: UIControlState.Highlighted)
    /*newButton.backgroundColor = UIColor.cyanColor()
    newButton.layer.borderColor = UIColor.blackColor().CGColor
    let widthForBorder: CGFloat = 0.5
    newButton.layer.borderWidth = widthForBorder*/
    newButton.backgroundRectForBounds(CGRectMake(5, 5, widthButton, heightButton))
    newButton.addTarget(self, action: "buttonAction:", forControlEvents: UIControlEvents.TouchUpInside)
    newButton.layer.cornerRadius = 10
    newButton.clipsToBounds = true
    self.view.addSubview(newButton)
    //Set up select note
    let widthSelectField = widthButton - 10
    selectTextView = UIButton(frame: (CGRectMake(162, 5, widthButton, 50))) as UIButton
    selectTextView.setBackgroundImage(buttonImage, forState: UIControlState.Normal)
    selectTextView.setBackgroundImage(buttonImageHighlight, forState: UIControlState.Highlighted)
    self.view.addSubview(selectTextView)
    selectTextField = UITextField(frame: CGRectMake(170, 22.5, widthSelectField, 15))
    selectTextField.keyboardType = UIKeyboardType.NumberPad
    //selectTextField.backgroundColor = UIColor.blueColor()
    selectTextView.addTarget(self, action: "textViewAction:", forControlEvents: UIControlEvents.TouchUpInside)
    self.view.addSubview(selectTextField)
    selectTextField.text = selectString
    selectTextField.canBecomeFirstResponder()
    selectTextField.textAlignment = NSTextAlignment.Center
    selectTextField.placeholder = "Select Note"
    //Set up return button
    var returnButton: UIButton = UIButton(frame: CGRectMake(120, 315, 80, 30))
    returnButton.backgroundColor = UIColor.grayColor()
    returnButton.layer.cornerRadius = 10
    returnButton.layer.masksToBounds = true
    returnButton.layer.borderWidth = 2
    returnButton.layer.borderColor = UIColor.blackColor().CGColor
    returnButton.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
    returnButton.setTitle("Return", forState: UIControlState.Normal)
    returnButton.addTarget(self, action: "returnButtonAction:", forControlEvents: UIControlEvents.TouchUpInside)
    self.view.addSubview(returnButton)

With this being outside the viewDidLoad()

func buttonAction(sender:UIButton!) {
        var noteArrayPlusOne = String(noteArray.count + 1)
        noteArray.updateValue(textView.text, forKey: noteArrayPlusOne)
        println(noteArray)
        textView.text = ""
    }
    func textViewAction(sender: UIButton!) {
        selectTextField.becomeFirstResponder()
    }
    func returnButtonAction(sender: UIButton!){
        //println("button was pressed")
        selectString = selectTextField.text
        println(selectString)
        textView.text = noteArray[selectString]
        selectTextField.text = ""
    }
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1 回答 1

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您想使用UIScrollView。这为您提供了一个可以平移的视图。

let scrollView: UIScrollView!

override func viewDidLoad() {
    super.viewDidLoad()
    self.scrollView = UIScrollView(frame: self.view.bounds)
    self.view.addSubview(self.scrollView)
}

要设置大小，请设置 UIScrollView 的 contentSize 属性。对于指南针/水平仪应用程序：

self.scrollView.contentSize = CGSize(width: 2 * theWidthOftheScreen, height: theHeightOfTheScreen)

要让滚动视图“捕捉”到最左边或最右边的滚动位置，请启用分页：

self.scrollView.pagingEnabled = true

还有很多其他属性，例如更改滚动条颜色或隐藏它们。

于 2014-06-14T23:07:59.500 回答