Swift - 继承UIView实现自定义可视化组件（附记分牌样例）

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import UIKit

enum ScoreType{

    case Common  //普通分数面板

    case Best    //最高分面板

}

protocol ScoreViewProtocol{

    func changeScore(value s:Int)

}

class ScoreView:UIView, ScoreViewProtocol

{

    var label:UILabel!

    let defaultFrame = CGRectMake(0,0,100,30)

    var stype:String!  //显示”最高分“还是”分数“

    var score:Int = 0{

        didSet{

            //分数变化，标签内容也要变化

            label.text = "\(stype):\(score)"

        }

    }

    //传入分数面板的类型，用于控制标签的显示

    init(stype:ScoreType)

    {

        label = UILabel(frame:defaultFrame)

        label.textAlignment = NSTextAlignment.Center

        super.init(frame:defaultFrame)

        self.stype = (stype == ScoreType.Common ? "分数":"最高分")

        backgroundColor = UIColor.orangeColor()

        label.font = UIFont(name:"微软雅黑", size:16)

        label.textColor = UIColor.whiteColor()

        self.addSubview(label)

    }

    required init(coder aDecoder: NSCoder) {

        super.init(coder: aDecoder)

    }

    //实现协议中的方法

    func changeScore(value s:Int)

    {

        score = s

    }

}

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import UIKit

class ViewController: UIViewController {

    var score:ScoreView!

    var bestscore:ScoreView!

    override func viewDidLoad() {

        super.viewDidLoad()

        // Do any additional setup after loading the view, typically from a nib.

        setupScoreLabels();

    }

    func setupScoreLabels()

    {

        score = ScoreView(stype: ScoreType.Common)

        score.frame.origin = CGPointMake(50, 80)

        score.changeScore(value: 0)

        self.view.addSubview(score)

        bestscore = ScoreView(stype: ScoreType.Best)

        bestscore.frame.origin.x = 170

        bestscore.frame.origin.y = 80

        bestscore.changeScore(value: 99)

        self.view.addSubview(bestscore)

    }

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

}