卡滞:Swift iOS中的模拟时钟
我是swift新手(通常是编码),我一直在从事一个模拟手表项目。我已经到了一个被困的地方。所有println()命令都不会向控制台输出任何内容,除非它们在函数“func setTime(){…}”之前到达。不知道那里发生了什么。而且我似乎无法用我找到的数学方法让手旋转。我想把它从obj-c转换成swift。(我知道底部部分现在是非常错误的)我一直在搞乱它(底部部分),但我没有得到任何旋转 任何帮助都将不胜感激。我觉得我很接近卡滞:Swift iOS中的模拟时钟,ios,swift,clock,Ios,Swift,Clock,我是swift新手(通常是编码),我一直在从事一个模拟手表项目。我已经到了一个被困的地方。所有println()命令都不会向控制台输出任何内容,除非它们在函数“func setTime(){…}”之前到达。不知道那里发生了什么。而且我似乎无法用我找到的数学方法让手旋转。我想把它从obj-c转换成swift。(我知道底部部分现在是非常错误的)我一直在搞乱它(底部部分),但我没有得到任何旋转 任何帮助都将不胜感激。我觉得我很接近 var theTimer:NSTimer! override
var theTimer:NSTimer!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
println(viewDidLoad)
func setTime(){
println("set time")
self.theTimer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: "set time", userInfo: nil, repeats: false)
let date = NSDate()
let outputFormatter = NSDateFormatter()
outputFormatter.dateFormat = "hh:mm:ss"
let newDateString:NSString = outputFormatter.stringFromDate(date)
println(newDateString)
let calendar = NSCalendar.currentCalendar()
let components = calendar.components(.CalendarUnitHour | .CalendarUnitMinute | .CalendarUnitSecond, fromDate: date)
var hour = components.hour
var minute = components.minute
var second = components.second
println(hour)
println(minute)
println(second)
**var secAngle = (6 * second)
var minAngle = (6 * minute)
var hourAngle = (30 * hour + minute / 2)
self.secsImage.transform = CGAffineTransformMakeRotation( CGFloat(secAngle) )
self.minsImage.transform = CGAffineTransformMakeRotation( CGFloat(Double(minAngle)) )
self.hoursImage.transform = CGAffineTransformMakeRotation( CGFloat(Double(hourAngle)) )**
println(secAngle)
println(minAngle)
println(hourAngle)
}
}
您在
viewDidLoad
函数中声明了setTime
函数,但从未调用过它。此外,您的NSTimer
选择器不正确-它需要是函数名,并且需要是选择器,而不仅仅是字符串
您应该将setTime
函数声明移出viewDidLoad
,我建议您在viewwillbeen中设置它-
var theTimer:NSTimer?
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
println(viewDidLoad)
}
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
self.setTime()
self.theTimer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: Selector("setTime"), userInfo: nil, repeats: true)
}
func setTime(){
println("set time")
let date = NSDate()
let outputFormatter = NSDateFormatter()
outputFormatter.dateFormat = "hh:mm:ss"
let newDateString:NSString = outputFormatter.stringFromDate(date)
println(newDateString)
let calendar = NSCalendar.currentCalendar()
let components = calendar.components(.CalendarUnitHour | .CalendarUnitMinute | .CalendarUnitSecond, fromDate: date)
var hour = components.hour
var minute = components.minute
var second = components.second
println(hour)
println(minute)
println(second)
var secAngle = (6 * second)
var minAngle = (6 * minute)
var hourAngle = (30 * hour + minute / 2)
self.secsImage.transform = CGAffineTransformMakeRotation( CGFloat(secAngle) )
self.minsImage.transform = CGAffineTransformMakeRotation( CGFloat(Double(minAngle)) )
self.hoursImage.transform = CGAffineTransformMakeRotation( CGFloat(Double(hourAngle)) )**
println(secAngle)
println(minAngle)
println(hourAngle)
}
如果你是新的编程人员,你可能想考虑在网络上运行一些基本的编码教程。