간단한 계산기

먼저 보기:
방금 swift를 연습했는데 코드가oc보다 많이 간소화되었어요. 그런데 어떤 부분은 아직 익숙하지 않아요. 특히 안에 판단해야 할 부분은 언제든지 비워둘 수 없어요. 선택할 수 있는 유형으로 추가해야 돼요?그리고!이어서 노력하다
 
코드:

class ViewController: UIViewController {

    let calResult = UILabel()//          label，    
    var frontNum = String()//           ，    1+2   ，1  frontNum   ，2    backnum   ， +   handlestyle   
    var backNum = String()
    var handleStyle = String()

    override func viewDidLoad() {
        super.viewDidLoad()
        self.view.backgroundColor = UIColor.black
        UIApplication.shared.statusBarStyle = UIStatusBarStyle.lightContent
        self.createMainView()
    }
    
    func createMainView() -> () {
        let bottomView = UIView()
        self.view .addSubview(bottomView)
        
        bottomView.snp .makeConstraints { (make) in
            make.left.right.bottom.equalTo(self.view)
            make.height.equalTo(H(h: 450))
        }
        
        var titlearr = ["c","+/-","%","/","7","8","9","x","4","5","6","-","1","2","3","+","","",".","="]
        let marginX = CGFloat((SCREENWIDTH-W(w:70*4))/5)
        let marginY = CGFloat((H(h: 450)-H(h: 70*5))/5)
        let width = W(w: 70)
        let height = H(h: 70)
        
        for i in 0...(titlearr.count-1) {
            let btn = UIButton()
            btn .setTitle(titlearr[i], for: UIControlState.normal)
            btn.titleLabel?.font = UIFont.boldSystemFont(ofSize: 30)
            btn.layer.cornerRadius = W(w: 34)
            btn.adjustsImageWhenHighlighted = true
            btn.layer.masksToBounds = true
            btn .addTarget(self, action: #selector(btnclick), for: UIControlEvents.touchUpInside)
            bottomView .addSubview(btn)
            
            if (i < 3){
                btn .setBackgroundImage(imageFromColor(color: ColorRGB(r: 120, g: 120, b: 120), viewSize: rectSize(w: 1, h: 1)), for: UIControlState.normal)
                btn .setBackgroundImage(imageFromColor(color: UIColor.white, viewSize: rectSize(w: 1, h: 1)), for: UIControlState.highlighted)
                btn .setTitleColor(UIColor.black, for: UIControlState.highlighted)
            }else if(i%4 == 3){
                btn .setBackgroundImage(imageFromColor(color: UIColor.orange, viewSize: rectSize(w: 1, h: 1)), for: UIControlState.normal)
                btn .setBackgroundImage(imageFromColor(color: ColorRGB(r: 240, g: 217, b: 177), viewSize: rectSize(w: 1, h: 1)), for: UIControlState.highlighted)
            }else{
                btn .setBackgroundImage(imageFromColor(color: ColorRGB(r: 40, g: 40, b: 40), viewSize: rectSize(w: 1, h: 1)), for: UIControlState.normal)
                    btn .setBackgroundImage(imageFromColor(color: ColorRGB(r: 120, g: 120, b: 120), viewSize: rectSize(w: 1, h: 1)), for: UIControlState.highlighted)
            }
            
            btn.snp .makeConstraints({ (make) in
                make.size.equalTo(rectSize(w: width, h: height))
            make.left.equalTo(bottomView.snp.left).offset(marginX+marginX*CGFloat(i%4)+CGFloat(i%4)*width)
                make.top.equalTo(bottomView.snp.top).offset(marginY*CGFloat(i/4)+CGFloat(i/4)*height)
            })
        }
        
        let zeroButton = UIButton()
        zeroButton .setTitle("0", for: UIControlState.normal)
        zeroButton .setTitleColor(UIColor.white, for: UIControlState.normal)
        zeroButton.titleLabel?.font = UIFont.boldSystemFont(ofSize: 30)
        zeroButton.layer.cornerRadius = height/2
        zeroButton.layer.masksToBounds = true
        zeroButton .addTarget(self, action: #selector(btnclick), for: UIControlEvents.touchUpInside)
        zeroButton .setBackgroundImage(imageFromColor(color: ColorRGB(r: 40, g: 40, b: 40), viewSize: rectSize(w: 1, h: 1)), for: UIControlState.normal)
        zeroButton .setBackgroundImage(imageFromColor(color: ColorRGB(r: 120, g: 120, b: 120), viewSize: rectSize(w: 1, h: 1)), for: UIControlState.highlighted)
        bottomView .addSubview(zeroButton)
        
        zeroButton.snp .makeConstraints { (make) in
            make.left.equalTo(bottomView.snp.left).offset(marginX)
            make.bottom.equalTo(bottomView.snp.bottom).offset(-marginY)
            make.size.equalTo(rectSize(w: width*2+marginX, h: height))
        }
        
        self.calResult.textColor = UIColor.white
        self.calResult.font = UIFont.systemFont(ofSize: 80)
        self.calResult.text = "0"
        self.calResult.numberOfLines = 1
        self.calResult.lineBreakMode = NSLineBreakMode.byWordWrapping
        self.calResult.textAlignment = NSTextAlignment.right
        self.view .addSubview(self.calResult)
        
        self.calResult.snp .makeConstraints { (make) in
            make.left.right.equalTo(self.view)
            make.bottom.equalTo(bottomView.snp.top).offset(-H(h: 25))
            make.height.equalTo(H(h: 100))
        }
    }
    
    @objc func btnclick(sender:UIButton) -> Void {
        if(sender.currentTitle == "+" || sender.currentTitle == "-" || sender.currentTitle == "x" || sender.currentTitle == "/"){
            self.handleStyle = String(sender.currentTitle!)
            self.calResult.text = "0"
        }else if String(sender.currentTitle!) == "=" {
            var frontResult = self.frontNum
            var backResult = self.backNum
            if frontResult == ""{
                frontResult = "0"
            }
            if backResult == ""{
                backResult = "0"
            }
            
            var result = Double()
            if self.handleStyle == "+"{
                result = Double(frontResult)! + Double(backResult)!
            }else if self.handleStyle == "-"{
                result = Double(frontResult)! - Double(backResult)!
            }else if self.handleStyle == "x"{
                result = Double(frontResult)! * Double(backResult)!
            }else if self.handleStyle == "/"{
                result = Double(frontResult)! / Double(backResult)!
            }else if self.handleStyle == "%"{
                let presult = Int(frontResult)! %  Int(backResult)!
                result = Double(presult)
            }else if self.handleStyle == ""{
                result = Double(frontResult)!
            }
            self.calResult.text = String(result)
        }else if sender.currentTitle == "c"{
            self.frontNum = ""
            self.backNum = ""
            self.handleStyle = ""
            self.calResult.text = "0"
        }else if sender.currentTitle == "%"{
            if self.frontNum == ""{
                self.frontNum = "0"
            }
            self.handleStyle = String(describing: sender.currentTitle)
        }else if sender.currentTitle == "+/-"{
            return
        }else if sender.currentTitle == "."{
            if self.handleStyle == ""{
                if self.frontNum .contains("."){
                    return
                }
                self.frontNum .append(sender.currentTitle!)
            }else{
                if self.backNum .contains("."){
                    return
                }
                self.backNum .append(sender.currentTitle!)
            }
        }else{
            let number = Int(sender.currentTitle!)
            if number! >= 0 {
                if self.handleStyle == ""{
                    self.frontNum .append(sender.currentTitle!)
                    self.calResult.text = self.frontNum
                }else{
                    self.backNum .append(sender.currentTitle!)
                    self.calResult.text = self.backNum
                }
                
            }
        }
    }
    
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}

대체적으로 이렇다. snapkit이 잘 어울리도록 사용했고 일부oc의 매크로를 사용했다. 프로젝트에 swift 파일을 만들어서 여러 가지 방법을 저장했다. 그 안에 색 전환 그림, 색 입력 rgb, 프레임 설정 방법 등이 포함된다. 구체적으로는 프로젝트에서 항목이 크지 않고 한 파일은 주요 코드이고 다른 것은 하나의 도구류일 뿐이다.
github 주소:https://github.com/dota4app/swift-calculateSimple
 
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