swift--控件工厂类的实现

控件工厂类，简而言之就是，减少代码的复用率，只在哪里用，然后在哪里调：

代码如下：

import UIKit

class ViewFactory: UIView,UITextFieldDelegate {

    //默认控件的尺寸
    class func getDefaultFrame( ) -> CGRect
    {
        let defaultFrame = CGRect(x:0,y:0,100,height:30)
        return defaultFrame
    }
    
    //类方法
    class func createControl(type:String,title:[String],action:Selector,sender:AnyObject) -> UIView
    {
        switch type {
        case "label":
            return ViewFactory.creatLabel(title: title[0])
            case "button":
            return ViewFactory.createButton(title: title[0], action: action, sender: sender as! UIViewController)
            case "text":
            return ViewFactory.creatTextField(value: title[0], action: action, sender: sender as! UIViewController as UIViewController as! UITextFieldDelegate)
            case "segment":
            return ViewFactory.creatSegment(items: [title[0]], action: action, sender: sender as! UIViewController)
        default:
            return ViewFactory.creatLabel(title: title[0])
        }
    }
    
    //创建按钮控件
    class func createButton(title:String, action:Selector, sender:UIViewController)
        -> UIButton {
            let button = UIButton(frame:ViewFactory.getDefaultFrame())
            button.backgroundColor = UIColor.orange
            button.setTitle(title, for:.normal)
            button.titleLabel!.textColor = UIColor.white
            button.titleLabel!.font = UIFont.systemFont(ofSize: 14)
            button.addTarget(sender, action:action, for:.touchUpInside)
            return button
    }
    
    //创建文本输入框控件
    class func creatTextField(value:String,action:Selector,sender:UITextFieldDelegate) -> UITextField
    {
        let textField  = UITextField(frame:ViewFactory.getDefaultFrame())
        textField.backgroundColor = UIColor.clear
        textField.textColor = UIColor.black
        textField.text = value
        textField.borderStyle = .roundedRect
        textField.adjustsFontSizeToFitWidth = true
        textField.delegate = sender
        return textField
    }
    
    //创建分段单选组件
    class func creatSegment(items:[String],action:Selector,sender:UIViewController) -> UISegmentedControl
    {
        let segment = UISegmentedControl(items:items)
        segment.frame = ViewFactory.getDefaultFrame()
        segment.isMomentary = false
        segment.addTarget(self, action: action, for: .valueChanged)
        return segment
    }
    
    //创建文本标签控件
    class func creatLabel(title:String) -> UILabel
    {
        let label = UILabel()
        label.textColor = UIColor.black
        label.backgroundColor = UIColor.white
        label.text = title
        label.frame = ViewFactory.getDefaultFrame()
        label.font = UIFont(name:"微软雅黑",size:16)
        return label
        
    }
}

调用：

 func initVIewFactory()
    {
        //创建文本标签
        let  labelNum = ViewFactory.creatLabel(title: "阈值")
        labelNum.frame = CGRect(x:20,y:100,60,height:30)
        self.view.addSubview(labelNum)
        
        let labelDm = ViewFactory.creatLabel(title: "维度")
        labelDm.frame = CGRect(x:20,y:200,60,height:30)
        self.view.addSubview(labelDm)
        
        //创建文本输入框
        textNum = ViewFactory.creatTextField(value: "", action:#selector(factoryAction), sender: self as UITextFieldDelegate)
        textNum.frame = CGRect(x:80,y:100,200,height:30)
        textNum.returnKeyType = .done
        self.view.addSubview(textNum)
        
        let textNumSecond = ViewFactory.creatTextField(value: "", action: #selector(factoryActionSecond), sender: self as UITextFieldDelegate)
        textNumSecond.frame = CGRect(x:80,y:200,200,height:30)
        textNum.returnKeyType = .done
        self.view.addSubview(textNumSecond)
        
        //创建分段单选控件
        segmentC = ViewFactory.creatSegment(items: ["3*3","4*4","5*5"], action: #selector(segmentAction), sender: self)
        segmentC.frame = CGRect(x:80,y:200,200,height:30)
        self.view.addSubview(segmentC)
        segmentC.selectedSegmentIndex = 0
        
        //创建按钮控件
        factorybtn = ViewFactory.createButton(title: "确定", action: #selector(factoryClick), sender: self)
        factorybtn.frame.origin = CGPoint(x:80,y:300)
        self.view.addSubview(factorybtn)
        
    }
    
    func factoryAction()
    {
        
    }
    
    func factoryActionSecond()
    {
        
    }
    
    func segmentAction()
    {
        
    }
    
    func factoryClick()
    {
        print("我点击了")
    }

效果如下：