自學 iOS，自學ios

自學 iOS，自學ios

最近公司項目不是很忙，偶然間看到程式設計語言熱門排行榜，看到swift 已經排到前10了，然OC排名也越來越後了，感覺要上車了，雖然現在項目都是用OC寫的，但是swift是一種趨勢。在網上看到“自學 iOS - 三十天三十個 Swift 項目” 這篇部落格，我也想自己在閑暇之餘學習下swift，在看了2天的swift 的文法過後，才開始做這個，文法看的也不是很懂，有些部分。還是要自己動手

廢話不多說

先上效果

 

這是這個簡單的效果

1.首先 我去網上找了一下 swift自動布局的架構 “SnapKit” 用起來和Massory 差不多 上手很快

然後 對swift的一些必要東西 進行了宏定義 類似於OC 的PCH檔案 swift 裡面就比較簡單 建立立個swift檔案就可以了 

代碼如下

import UIKitimport SnapKitlet SCREEN_WIDTH = UIScreen.main.bounds.size.widthlet SCREEN_HEIGHT = UIScreen.main.bounds.size.heightvar RGBColor: (CGFloat, CGFloat, CGFloat) -> UIColor = {red, green, blue in    return UIColor(red: red / 255, green: green / 255, blue: blue / 255, alpha: 1);}var RGBAColor: (CGFloat, CGFloat, CGFloat, CGFloat) -> UIColor = {red, green, blue, alpha in    return UIColor(red: red / 255, green: green / 255, blue: blue / 255, alpha: alpha);}

 

然後主控制器裡面的代碼（由於代碼比較簡單 我就沒寫注釋了 ）

import UIKitclass ViewController: UIViewController {    lazy var topBox = UIView()    lazy var bottomLeft = UIView()    lazy var bottomRight = UIView()    lazy var resertBtn = UIButton()    lazy var startBtn = UIButton()    lazy var pauseBtn = UIButton()    lazy var numberLabel = UILabel()    var timer: Timer!            override func viewDidLoad() {        super.viewDidLoad()        self.view.addSubview(topBox)        self.view.addSubview(bottomLeft)        self.view.addSubview(bottomRight)                topBox.backgroundColor = RGBColor(8, 1, 34)        bottomLeft.backgroundColor = RGBColor(82, 91, 252)        bottomRight.backgroundColor = RGBColor(102, 189, 9)                topBox.snp.makeConstraints { (make) in            make.width.equalTo(SCREEN_WIDTH)            make.height.equalTo(SCREEN_HEIGHT * 0.4)            make.left.equalTo(self.view).offset(0)            make.top.equalTo(self.view).offset(0)        }                resertBtn.setTitle("Reset", for: UIControlState.normal)        resertBtn.setTitleColor(RGBColor(255, 255, 255), for: UIControlState.normal)//        resertBtn.backgroundColor = UIColor.red        resertBtn.addTarget(self, action: #selector(resert) , for: UIControlEvents.touchUpInside)        self.topBox.addSubview(resertBtn)                numberLabel.text = "0.0"        numberLabel.font = UIFont.boldSystemFont(ofSize: 100)        numberLabel.textColor = UIColor.white        numberLabel.textAlignment = .center        topBox.addSubview(numberLabel)            numberLabel.snp.makeConstraints { (make) in            make.center.equalTo(topBox)            make.width.equalTo(topBox)            make.height.equalTo(100)        }                resertBtn.snp.makeConstraints { (make) in            make.width.equalTo(120)            make.top.equalTo(self.topBox).offset(20)            make.height.equalTo(20)            make.right.equalTo(self.topBox.snp.right).offset(-20)        }                bottomLeft.snp.makeConstraints { (make) in            make.width.equalTo(SCREEN_WIDTH * 0.5)            make.top.equalTo(topBox.snp.bottom).offset(0)            make.left.equalTo(self.view)            make.bottom.equalTo(self.view)        }                startBtn.setTitle("開始", for: .normal)        startBtn.setTitleColor(UIColor.white, for: .normal)        startBtn.addTarget(self, action: #selector(start), for: .touchUpInside)        bottomLeft.addSubview(startBtn)                startBtn.snp.makeConstraints { (make) in            make.width.equalTo(bottomLeft)            make.height.equalTo(bottomLeft)            make.left.equalTo(bottomLeft).offset(0)            make.top.equalTo(bottomLeft).offset(0)        }                bottomRight.snp.makeConstraints { (make) in            make.left.equalTo(bottomLeft.snp.right).offset(0)            make.width.equalTo(bottomLeft)            make.height.equalTo(bottomLeft)            make.top.equalTo(topBox.snp.bottom).offset(0)        }                pauseBtn.setTitle("停止", for: .normal)        pauseBtn.setTitleColor(UIColor.white, for: .normal)        pauseBtn.addTarget(self, action: #selector(pause), for: .touchUpInside)        bottomRight.addSubview(pauseBtn)                pauseBtn.snp.makeConstraints { (make) in            make.width.equalTo(bottomRight)            make.height.equalTo(bottomRight)            make.left.equalTo(bottomRight).offset(0)            make.top.equalTo(bottomRight).offset(0)        }                            }    // MARK:清零的點擊事件    func resert() {        startBtn.isUserInteractionEnabled = true        pauseBtn.isUserInteractionEnabled = true        numberLabel.text = "0.0"        timer.invalidate()    }        // MARK:開始事件    func start(){        startBtn.isUserInteractionEnabled = false        pauseBtn.isUserInteractionEnabled = true        // 建立並啟動定時器        timer = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: #selector(numberChange), userInfo: self, repeats: true)        timer.fire()    }        func numberChange() {        let number = NSString(string: numberLabel.text!).doubleValue        let changeNumber = number + 0.1        numberLabel.text = "\(changeNumber)"    }        // MARK:暫停    func pause() {        pauseBtn.isUserInteractionEnabled = false        startBtn.isUserInteractionEnabled = true        timer.invalidate()    }            override func didReceiveMemoryWarning() {        super.didReceiveMemoryWarning()    }}