From ee120bcde4874cc103466ef2956c8f031c9fe8f2 Mon Sep 17 00:00:00 2001 From: XionVV Date: Wed, 9 Mar 2016 17:02:19 +0800 Subject: [PATCH] Update CounterViewController.swift --- .../SwiftCounter/CounterViewController.swift | 227 +++++++++--------- 1 file changed, 113 insertions(+), 114 deletions(-) diff --git a/001_swift_counter/SwiftCounter/SwiftCounter/CounterViewController.swift b/001_swift_counter/SwiftCounter/SwiftCounter/CounterViewController.swift index 251e4fe..c87defa 100644 --- a/001_swift_counter/SwiftCounter/SwiftCounter/CounterViewController.swift +++ b/001_swift_counter/SwiftCounter/SwiftCounter/CounterViewController.swift @@ -8,128 +8,141 @@ import UIKit -class CounterViewController: UIViewController { +// 随机色 +func randomColor() -> UIColor { + return UIColor(red: CGFloat(arc4random_uniform(255))/255.0, green: CGFloat(arc4random_uniform(255))/255.0, blue: CGFloat(arc4random_uniform(255))/255.0, alpha: 1.0) +} - ///UI Controls - var timeLabel: UILabel? //显示剩余时间 - var startStopButton: UIButton? //开始/停止按钮 - var clearButton: UIButton? //复位按钮 - var timeButtons: [UIButton]? //设置时间的按钮数组 - let timeButtonInfos = [("1分", 60), ("3分", 180), ("5分", 300), ("秒", 1)] - +class ViewController: UIViewController { + // 声明子控件 + var timeLabel: UILabel? + var timeButtons: [UIButton]? + var startStopButton: UIButton? + var clearButton: UIButton? + var timer: NSTimer? + // 按钮信息 + let timeButtonInfos = [("1分", 60), ("3分", 180), ("5分", 300), ("1秒", 1)] + // 当前倒计时剩余的秒数 var remainingSeconds: Int = 0 { - willSet(newSeconds) { - - let mins = newSeconds / 60 - let seconds = newSeconds % 60 - - timeLabel!.text = NSString(format: "%02d:%02d", mins, seconds) - - if newSeconds <= 0 { - isCounting = false - self.startStopButton!.alpha = 0.3 - self.startStopButton!.enabled = false - } else { - self.startStopButton!.alpha = 1.0 - self.startStopButton!.enabled = true + // 添加一个willSet属性 - 重写set方法 + willSet(newSeconds) { + buttonStates(startStopButton!, enabled: (newSeconds > 0)) + let mins = newSeconds / 60 + let seconds = newSeconds % 60 + self.timeLabel!.text = NSString(format: "%02d : %02d", mins, seconds) as String } - - } } - var timer: NSTimer? var isCounting: Bool = false { - willSet(newValue) { - if newValue { - timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: "updateTimer:", userInfo: nil, repeats: true) - } else { - timer?.invalidate() - timer = nil + willSet(newValue) { + if newValue { // ture 定时器开启 + timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: "updateTimer", userInfo: nil, repeats: true) + // 注册一个本地通知 + createAndFireLocalNotificationAfterSeconds(remainingSeconds) + } else { + // 停止计时并清空定时器 + timer?.invalidate() + timer = nil + } + + // 判断按钮的状态, 来修改按钮的显示 + buttonStates(clearButton!, enabled: !newValue) + for button in timeButtons! { + buttonStates(button, enabled: !newValue) + } + + if remainingSeconds <= 0 { + startStopButton!.selected = newValue + buttonStates(startStopButton!, enabled: newValue) + } } - setSettingButtonsEnabled(!newValue) } + + func buttonStates(button: UIButton ,enabled: Bool) { + button.enabled = enabled + button.alpha = enabled ? 1.0 : 0.3 } override func viewDidLoad() { super.viewDidLoad() - - self.view.backgroundColor = UIColor.whiteColor() - - setupTimeLabel() - setuptimeButtons() - setupActionButtons() - - remainingSeconds = 0 - } - - override func didReceiveMemoryWarning() { - super.didReceiveMemoryWarning() - // Dispose of any resources that can be recreated. + + self.setupTimeLabel() + self.setupTimeButtons() + self.setupActionButtons() } override func viewWillLayoutSubviews() { super.viewWillLayoutSubviews() - timeLabel!.frame = CGRectMake(10, 40, self.view.bounds.size.width-20, 120) - - let gap = ( self.view.bounds.size.width - 10*2 - (CGFloat(timeButtons!.count) * 64) ) / CGFloat(timeButtons!.count - 1) - for (index, button) in enumerate(timeButtons!) { - let buttonLeft = 10 + (64 + gap) * CGFloat(index) - button.frame = CGRectMake(buttonLeft, self.view.bounds.size.height-120, 64, 44) + let viewW = self.view.bounds.size.width + let viewH = self.view.bounds.size.height + + // 时间显示 + let margin: CGFloat = 10 + let timeLabelW: CGFloat = 40 + let timeLabelH: CGFloat = 120 + timeLabel!.frame = CGRectMake(margin, timeLabelW, viewW - margin * 2, timeLabelH) + + // 时间按钮 + let timeButtonW: CGFloat = (viewW - margin * CGFloat(timeButtons!.count + 1)) / CGFloat(timeButtons!.count) + let timeButtonH: CGFloat = 44 + let timeButtonY: CGFloat = viewH - 120 + for (index, button) in timeButtons!.enumerate() { + let timeButtonX = (timeButtonW + margin) * CGFloat(index) + margin + button.frame = CGRectMake(timeButtonX, timeButtonY, timeButtonW, timeButtonH) } - startStopButton!.frame = CGRectMake(10, self.view.bounds.size.height-60, self.view.bounds.size.width-20-100, 44) - clearButton!.frame = CGRectMake(10+self.view.bounds.size.width-20-100+20, self.view.bounds.size.height-60, 80, 44) + startStopButton!.frame = CGRectMake(margin, CGRectGetMaxY(timeButtons![0].frame) + margin, viewW * 0.7 - margin * 2, timeButtonH) + clearButton!.frame = CGRectMake(CGRectGetMaxX(startStopButton!.frame) + margin, startStopButton!.frame.origin.y, viewW - CGRectGetMaxX(startStopButton!.frame) - margin * 2, timeButtonH) } - - //UI Helpers - + // 初始化时间label func setupTimeLabel() { - timeLabel = UILabel() timeLabel!.textColor = UIColor.whiteColor() - timeLabel!.font = UIFont(name: "Helvetica", size: 80) + timeLabel!.font = UIFont.systemFontOfSize(80) timeLabel!.backgroundColor = UIColor.blackColor() timeLabel!.textAlignment = NSTextAlignment.Center + timeLabel!.text = "00 : 00" self.view.addSubview(timeLabel!) } - func setuptimeButtons() { - + // 初始化按钮 + func setupTimeButtons() { + // 创建一个button数组 var buttons: [UIButton] = [] - for (index, (title, _)) in enumerate(timeButtonInfos) { - + for(index, (title, _)) in timeButtonInfos.enumerate() { + // 实例化一个button let button: UIButton = UIButton() - button.tag = index //保存按钮的index - button.setTitle("\(title)", forState: UIControlState.Normal) + // 获取button的tag + button.tag = index + button.setTitle(title, forState: UIControlState.Normal) - button.backgroundColor = UIColor.orangeColor() + button.backgroundColor = randomColor() button.setTitleColor(UIColor.whiteColor(), forState: UIControlState.Normal) button.setTitleColor(UIColor.blackColor(), forState: UIControlState.Highlighted) button.addTarget(self, action: "timeButtonTapped:", forControlEvents: UIControlEvents.TouchUpInside) + // 将元素添加进数组 buttons += [button] - self.view.addSubview(button) + self.view.addSubview(button) } timeButtons = buttons - } + // 操作按钮 func setupActionButtons() { - - //create start/stop button startStopButton = UIButton() + buttonStates(startStopButton!, enabled: false) startStopButton!.backgroundColor = UIColor.redColor() startStopButton!.setTitleColor(UIColor.whiteColor(), forState: UIControlState.Normal) - startStopButton!.setTitleColor(UIColor.blackColor(), forState: UIControlState.Highlighted) + startStopButton!.setTitleColor(UIColor.blackColor(), forState: UIControlState.Selected) startStopButton!.setTitle("启动/停止", forState: UIControlState.Normal) startStopButton!.addTarget(self, action: "startStopButtonTapped:", forControlEvents: UIControlEvents.TouchUpInside) - self.view.addSubview(startStopButton!) clearButton = UIButton() @@ -138,71 +151,57 @@ class CounterViewController: UIViewController { clearButton!.setTitleColor(UIColor.blackColor(), forState: UIControlState.Highlighted) clearButton!.setTitle("复位", forState: UIControlState.Normal) clearButton!.addTarget(self, action: "clearButtonTapped:", forControlEvents: UIControlEvents.TouchUpInside) - self.view.addSubview(clearButton!) - } - func setSettingButtonsEnabled(enabled: Bool) { - for button in self.timeButtons! { - button.enabled = enabled - button.alpha = enabled ? 1.0 : 0.3 - } - clearButton!.enabled = enabled - clearButton!.alpha = enabled ? 1.0 : 0.3 - } - - //Actions - + // 按钮响应方法 func timeButtonTapped(sender: UIButton) { - let (title, seconds) = timeButtonInfos[sender.tag] - remainingSeconds += seconds + // 根据按钮的tag取出元组中seconds值, _表示不用到数组的这个元素 + let (_, seconds) = timeButtonInfos[sender.tag] + remainingSeconds += seconds; + + // 当点击时间的时候就开始就变成true + buttonStates(startStopButton!, enabled: true) } func startStopButtonTapped(sender: UIButton) { - isCounting = !isCounting - - if isCounting { - createAndFireLocalNotificationAfterSeconds(remainingSeconds) - } else { - UIApplication.sharedApplication().cancelAllLocalNotifications() - } - + sender.selected = !sender.selected + // 开始计时 + self.isCounting = sender.selected } func clearButtonTapped(sender: UIButton) { - remainingSeconds = 0 + + if remainingSeconds > 0 { + remainingSeconds = 0 + } } - func updateTimer(sender: NSTimer) { + func updateTimer() { remainingSeconds -= 1 - if remainingSeconds <= 0 { - let alert = UIAlertView() - alert.title = "计时完成！" - alert.message = "" - alert.addButtonWithTitle("OK") - alert.show() - + let alert = UIAlertController(title: "计时完成", message: nil, preferredStyle: UIAlertControllerStyle.Alert) + let action = UIAlertAction(title: "知道了", style: UIAlertActionStyle.Default, handler:nil) + alert.addAction(action) + self.presentViewController(alert, animated: true, completion: nil) + isCounting = false } } - //Helpers - + // 创建一个本地通知 func createAndFireLocalNotificationAfterSeconds(seconds: Int) { - + // 取消当前app在本地注册的消息 UIApplication.sharedApplication().cancelAllLocalNotifications() let notification = UILocalNotification() + let timeIntervalSinceNow = NSTimeInterval(seconds) - let timeIntervalSinceNow = Double(seconds) - notification.fireDate = NSDate(timeIntervalSinceNow:timeIntervalSinceNow); + // 消息激活时间(开始计时的时间) + notification.fireDate = NSDate(timeIntervalSinceNow: timeIntervalSinceNow) + // 设置时区 + notification.timeZone = NSTimeZone.systemTimeZone() - notification.timeZone = NSTimeZone.systemTimeZone(); - notification.alertBody = "计时完成！"; - - UIApplication.sharedApplication().scheduleLocalNotification(notification); + notification.alertBody = "计时完成" + UIApplication.sharedApplication().scheduleLocalNotification(notification) } - - }