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Update CounterViewController.swift #4

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227 changes: 113 additions & 114 deletions 001_swift_counter/SwiftCounter/SwiftCounter/CounterViewController.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -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()
Expand All @@ -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)
}


}