这是我的代码：
func Ivan()
{
if !timer.valid{ //prevent more than one timer on the thread
// timerLabel.text = timeString(60 - storedTime)
timer = NSTimer.scheduledTimerWithTimeInterval(timeInterval,
target: self,
selector: "timerDidEnd:",
userInfo: "Офертата е изтекла",
repeats: true) //repeating timer in the second iteration
}
}
func marseJSON(Person: String)
{
// let path: String = NSBundle.mainBundle().pathForResource("document1", ofType: "json") as String!
let jsonData1 = NSData(contentsOfURL: NSURL(string: "http://www.maslinko.com/document1.json")!) as NSData!
//let jsonData = NSData(contentsOfFile: path) as NSData!
let ReadableJSON1 = JSON ( data:jsonData1, options: NSJSONReadingOptions.MutableContainers, error: nil )
// var Person = Person
// Person += "\(RandomWordGen)"
// NumberRows = ReadableJSON ["People"].count
let NameLabel1 = ReadableJSON1 ["People"] [Person]["A1"].string as String!
let NameImeNaObekt = ReadableJSON1 ["People"] [Person] ["B1"].string as String!
let Picture = ReadableJSON1 ["People"] [Person] ["E1"].string as String!
let url = NSURL(string: Picture)
let data = NSData(contentsOfURL: url!)
LabelText1.text = NameLabel1
LabelText2.text = NameImeNaObekt
ImageView.image = UIImage (data: data!)
}
func timerDidEnd(timer:NSTimer)
{
//timerLabel.text = timer.userInfo as? String
let storedTime: Double = NSUserDefaults.standardUserDefaults().doubleForKey("storedTime")
let currentTime = NSDate().timeIntervalSince1970
//timer that counts down
timeCount = timeCount - timeInterval
if (60 - (currentTime - storedTime)) <= 0 { //test for target time reached.
TimerLabel.text = "Офертата е изтекла"
timer.invalidate()
} else { //update the time on the clock if not reached
TimerLabel.text = timeString(60 - (currentTime - storedTime))
}
}
func timeString(time:NSTimeInterval) -> String {
let hours = Int(time) / 3600
let minutes = Int(time) / 60 % 60
let seconds = Int(time) % 60
return String(format:"%02i:%02i:%02i", hours, minutes, seconds)
}
func displayQuote(){
let RandomWordGen = arc4random_uniform(5)
// get the quote stored in NSUserDefaults for the key "storedPerson"
let storedPerson: String? = NSUserDefaults.standardUserDefaults().stringForKey("storedPerson")
// get the time stored in NSUserDefaults for the key "storedTime"
let storedTime: Double = NSUserDefaults.standardUserDefaults().doubleForKey("storedTime")
// get the current time interval since 1970
let currentTime = NSDate().timeIntervalSince1970
var Person: String = "Person"
// if the stored quote doesn't exist, or it has been more than
// a day (60 * 60 * 24 seconds) since the quote was stored
//let dosiTime: Double=currentTime - storedTime
Ivan()
if(storedPerson == nil || currentTime - storedTime >= 60) {
// generate a new person
Person+="\(RandomWordGen)"
// store the newly generated quote for the key "storedQuote"
NSUserDefaults.standardUserDefaults().setObject(Person, forKey: "storedPerson")
// store the current time for the key "storedTime"
NSUserDefaults.standardUserDefaults().setObject(currentTime, forKey: "storedTime")
NSUserDefaults.standardUserDefaults().synchronize()
}
else{
// otherwise, the quote != nil and was generated less than a day ago
// so this one should be displayed
Person = storedPerson!
}
//display quoteToDisplay
marseJSON(Person)
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
@IBAction func Back(sender: AnyObject) {
self.dismissViewControllerAnimated(true, completion: nil)
}
@IBAction func Igrai(sender: AnyObject) {
displayQuote()
}
}
当我尝试打开JSON文件时导致问题，我收到此错误： 致命错误：在展开Optional值时意外发现nil 问题不在我的JSON文件中，因为我有2个JSON文件，它们是相同的document2.json和document1.json 如果我写document2.json应用程序工作正常，但是当我写document1.json时它会向我显示错误。你能否告诉我可能导致问题的原因，因为文件是相同的而且主机是相同的只有名字是不同的1 / 2.也许我已经在代码中的其他地方保存了document2，但我不知道在哪里，请你告诉我如何修复它，因为我需要从它们两个读取。