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在iOS开发中，页面里有时会大量的用到一些控件，如果要一个个单独创建再设置样式的话就显得很麻烦。我们可以创建一个生成各种控件的工厂类，这样在需要的时候调用下就可以了。
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import UIKitclass ViewFactory{ /** * 控件默认尺寸 */ class func getDefaultFrame() -> CGRect { let defaultFrame = CGRectMake(0, 0, 100, 30) return defaultFrame } class func createControl(type:String, title:[String], action:Selector, sender:AnyObject) -> UIView { switch(type) { case "label": return ViewFactory.createLabel(title[0]) case "button": return ViewFactory.createButton(title[0], action: action, sender: sender as UIViewController) case "text": return ViewFactory.createTextField(title[0], action: action, sender: sender as UITextFieldDelegate) case "segment": return ViewFactory.createSegment(title, action: action, sender: sender as UIViewController) default: return ViewFactory.createLabel(title[0]) } } /** * 创建按钮控件 */ class func createButton(title:String, action:Selector, sender:UIViewController)->UIButton { var button = UIButton(frame:ViewFactory.getDefaultFrame()) button.backgroundColor = UIColor.orangeColor() button.setTitle(title, forState:.Normal) button.titleLabel!.textColor = UIColor.whiteColor() button.titleLabel!.font = UIFont.systemFontOfSize(14) button.addTarget(sender, action:action, forControlEvents:UIControlEvents.TouchUpInside) return button } /** * 创建文本输入框控件 */ class func createTextField(value:String, action:Selector, sender:UITextFieldDelegate) -> UITextField { var textField = UITextField(frame:ViewFactory.getDefaultFrame()) textField.backgroundColor = UIColor.clearColor() textField.textColor = UIColor.blackColor() textField.text = value textField.borderStyle = UITextBorderStyle.RoundedRect textField.adjustsFontSizeToFitWidth = true textField.delegate = sender return textField } /** * 创建分段单选控件 */ class func createSegment(items: [String], action:Selector, sender:UIViewController) ->UISegmentedControl { var segment = UISegmentedControl(items:items) segment.frame = ViewFactory.getDefaultFrame() //segment.segmentedControlStyle = UISegmentedControlStyle.Bordered segment.momentary = false segment.addTarget(sender, action:action, forControlEvents:UIControlEvents.ValueChanged) return segment } /** * 创建文本标签控件 */ class func createLabel(title:String) -> UILabel { let label = UILabel() label.textColor = UIColor.blackColor(); label.backgroundColor = UIColor.whiteColor(); label.text = title; label.frame = ViewFactory.getDefaultFrame() label.font = UIFont(name: "HelveticaNeue-Bold", size: 16) return label }} |
工厂类的使用：
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import UIKitclass ViewController: UIViewController,UITextFieldDelegate { var txtNum:UITextField! var segDimension:UISegmentedControl! var btn:UIButton! override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. setupControls() } func setupControls() { //创建文本标签 let labelNum = ViewFactory.createLabel("阈值:") labelNum.frame = CGRect(x: 20, y: 100, width: 60, height: 30) self.view.addSubview(labelNum) let labelDm = ViewFactory.createLabel("维度:") labelDm.frame = CGRect(x: 20, y: 200, width: 60, height: 30) self.view.addSubview(labelDm) //创建文本输入框 txtNum = ViewFactory.createTextField("", action:Selector("numChanged"), sender:self) txtNum.frame = CGRect(x:80,y:100,width:200,height:30) txtNum.returnKeyType = UIReturnKeyType.Done self.view.addSubview(txtNum) //创建分段单选控件 segDimension = ViewFactory.createSegment(["3x3", "4x4", "5x5"], action:"dimensionChanged:", sender:self) segDimension.frame = CGRect(x:80,y: 200,width: 200,height: 30) self.view.addSubview(segDimension) segDimension.selectedSegmentIndex = 1 //创建按钮控件 btn = ViewFactory.createButton("确定", action: nil, sender: self) btn.frame.origin = CGPointMake(80, 300) self.view.addSubview(btn) } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. }} |
Swift - 生成各种控件的工厂类（包含标签，按钮，输入框等）
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原文地址：http://www.cnblogs.com/Free-Thinker/p/4838393.html
