【发布时间】：2015-09-24 15:35:34
【问题描述】：
我对 Swift 很陌生，所以我不确定错误发生在哪里。
这是我的视图控制器。也许我没有正确调用函数，因为这个错误是在我包含改变时态的函数之后开始发生的。
有趣的是，如果我重新启动运行 iOS 9 的模拟器并且没有给我任何运行时错误，应用程序运行良好。我正在使用 Xcode 7.0 beta 版本。
任何帮助将不胜感激。
提前致谢。
import UIKit
import AVFoundation
class ViewController: UIViewController {
let synth = AVSpeechSynthesizer()
var myUtterance = AVSpeechUtterance(string: "")
var sentence = ""
let subject: [String] = ["I", "You", "He" , "She", "We", "They"]
let verbNoun = [["eat" ,"eats", "ate", "will eat", "an apple", "a banana", "a cake", "a sandwhich" ],
["drink" ,"drinks", "drank", "will drink", "water", "milk","tea","coffee"]]
var i = 0
var j = 0
var t = 0
var k = 4
var subjectCount = 6 //var subjectCount = subject.count()
var verbCount = 2
var nounCount = 4
var tense = "present"
func modulo (a: Int, b: Int) ->Int{
if a%b<0 {
return ((a%b)+b)
}else{
return a%b
}
}
func getTense(tense: String) ->Int{
if tense == "present" {
return 0
if i==2 || i==3 { return 1}
}
else if tense == "past" { return 2 }
else if tense == "future" { return 3 }
return 0
}
/* func sentenceGenerator(s: String, v: String, n: String) -> Void {
verbLabel!.text = v
nounLabel!.text = n
subjectLabel.text = s
}
*/
@IBOutlet var subjectLabel: UILabel!
@IBOutlet var verbLabel: UILabel!
@IBOutlet var nounLabel: UILabel!
@IBOutlet var sent: UILabel!
@IBAction func futureTense(sender: AnyObject) {
tense = "future"
t = getTense(tense)
verbLabel!.text = verbNoun[j][t]
nounLabel!.text = verbNoun[j][k]
subjectLabel!.text = subject[i]
sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]
sent!.text = sentence
}
@IBAction func pastTense(sender: AnyObject) {
tense = "past"
t = getTense(tense)
verbLabel!.text = verbNoun[j][t]
nounLabel!.text = verbNoun[j][k]
subjectLabel!.text = subject[i]
sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]
sent!.text = sentence
}
@IBAction func subjectPrevious(sender: AnyObject) {
i--
i = modulo(i,b: subjectCount)
t = getTense(tense)
subjectLabel!.text = subject[i]
verbLabel!.text = verbNoun[j][t]
nounLabel!.text = verbNoun[j][k]
// sentenceGenerator(subject[i], v: verbNoun[j][t], n: verbNoun[j][k])
sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]
sent!.text = sentence
}
@IBAction func subjectNext(sender: AnyObject) {
i++
i = modulo(i,b: 6)
t = getTense(tense)
subjectLabel!.text = subject[i]
verbLabel!.text = verbNoun[j][t]
nounLabel!.text = verbNoun[j][k]
sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]
sent!.text = sentence
}
@IBAction func verbNext(sender: AnyObject) {
j++
j = modulo(j,b: verbCount)
t = getTense(tense)
verbLabel!.text = verbNoun[j][t]
nounLabel!.text = verbNoun[j][k]
sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]
sent!.text = sentence
}
@IBAction func verbPrevious(sender: AnyObject) {
j--
j = modulo(j,b: verbCount)
t = getTense(tense)
verbLabel!.text = verbNoun[j][t]
nounLabel!.text = verbNoun[j][k]
sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]
sent!.text = sentence
}
@IBAction func nounPrev(sender: AnyObject) {
k--
k = modulo(k,b: nounCount)+4
t = getTense(tense)
verbLabel!.text = verbNoun[j][t]
nounLabel!.text = verbNoun[j][k]
sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]
sent!.text = sentence
}
@IBAction func nounNext(sender: AnyObject) {
k++
k = modulo(k,b: nounCount)+4
t = getTense(tense)
verbLabel!.text = verbNoun[j][t]
nounLabel!.text = verbNoun[j][k]
sentence = subject[i] + " " + verbNoun[j][t] + " " + verbNoun[j][k]
sent!.text = sentence
}
@IBAction func splish(sender: AnyObject) {
myUtterance = AVSpeechUtterance(string: sentence)
myUtterance.rate = 0.4
synth.speakUtterance(myUtterance)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.=
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
/* override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
self.view.endEditing(true)
}
func textFieldshouldReturn(textField: UITextField) -> Bool{
textField.resignFirstResponder()
return true
}*/
}
【问题讨论】：
-
问题是出口动作函数有一个参数类型AnyObject。有两种方法可以解决这个问题。类型将它们转换为不同的类型，或者当您 ctrl 将线从情节提要中的元素拖放到视图控制器而不是 anyObject 时，请选择特定类型。试试看
-
那么，我该选择 UIButton 吗？不好意思，我真的是Swift新手，前几天才开始学习。
-
@Korpel，AnyObject 有什么问题？
sender无论如何都不会被使用。我经常在代码中使用带有 AnyObject 的操作，它们工作正常。 -
@SayanSarkar，您提供了很多代码进行分析。尝试在不同的地方放置断点并找出崩溃的地方。
-
@IBOutlet var subjectLabel：UILabel！ -- 这是断点发生的地方