当我点击按钮(连接到 @IBAction fun Plus(..)..) 时，我的应用程序崩溃并提示:
Thread 1: signal SIGABRT in AppDelegate.Swift file.
Xcode 是这样说的:
`2015-05-05 00:43:11.165 koka[14911:632850] -[koka.ViewController mainButton:]: unrecognized selector sent to instance 0x7fa4205786b0
2015-05-05 00:43:11.192 koka[14911:632850] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[koka.ViewController mainButton:]: unrecognized selector sent to instance 0x7fa4205786b0'
*** First throw call stack:
(
0 CoreFoundation 0x0000000108615a75 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x000000010a16dbb7 objc_exception_throw + 45
2 CoreFoundation 0x000000010861cd1d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x00000001085749dc ___forwarding___ + 988
4 CoreFoundation 0x0000000108574578 _CF_forwarding_prep_0 + 120
5 UIKit 0x0000000108ea9a22 -[UIApplication sendAction:to:from:forEvent:] + 75
6 UIKit 0x0000000108fb0e50 -[UIControl _sendActionsForEvents:withEvent:] + 467
7 UIKit 0x0000000108fb021f -[UIControl touchesEnded:withEvent:] + 522
8 UIKit 0x0000000108eefb68 -[UIWindow _sendTouchesForEvent:] + 735
9 UIKit 0x0000000108ef0493 -[UIWindow sendEvent:] + 683
10 UIKit 0x0000000108ebcfb1 -[UIApplication sendEvent:] + 246
11 UIKit 0x0000000108eca227 _UIApplicationHandleEventFromQueueEvent + 17700
12 UIKit 0x0000000108ea523c _UIApplicationHandleEventQueue + 2066
13 CoreFoundation 0x000000010854ac91 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
14 CoreFoundation 0x0000000108540b5d __CFRunLoopDoSources0 + 269
15 CoreFoundation 0x0000000108540194 __CFRunLoopRun + 868
16 CoreFoundation 0x000000010853fbc6 CFRunLoopRunSpecific + 470
17 GraphicsServices 0x000000010c71ea58 GSEventRunModal + 161
18 UIKit 0x0000000108ea8580 UIApplicationMain + 1282
19 koka 0x000000010842fa6e top_level_code + 78
20 koka 0x000000010842faaa main + 42
21 libdyld.dylib 0x000000010a949145 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
这是我的代码。有很多不必要的信息，但为了确保，我已经发布了所有代码。您可以看到 @IBAction func Enter(..).. 的主体类似于 @IBAction func Plus(..).. 一个，但不是Plus 函数第一个工作正常。
import UIKit
class ViewController: UIViewController {
var num = ""
var typedNum: [Int] = []
var numArray: [[Int]] = []
var numSumArray: [[Int]] = []
var plusFlag = false
var minusFlag = false
var resultLabel = "Res: "
var length: Int = Int()
@IBOutlet weak var resultField: UILabel!
@IBAction func Reset(sender: UIButton!) {
resultLabel = "Res: "
resultField.text = resultLabel
num = ""
plusFlag = false
minusFlag = false
numArray = []
numSumArray = []
}
@IBAction func Enter(sender: UIButton!) {
resultLabel += " = "
numArray = getNum(num)
length = numArray.count
if (length == 1){
resultLabel += num
}
resultField.text = resultLabel
if (length > 1){
if plusFlag{
numSumArray[length-1] = SumOfTwo(numArray[length-2], second: numArray[length-1])
for i in numSumArray{
resultLabel += "\(i)"
}
}
if minusFlag{
}
}
//reset
resultLabel = "Res: "
num = ""
plusFlag = false
minusFlag = false
numArray = []
numSumArray = []
}
@IBAction func Minus(sender: UIButton!) {
}
@IBAction func Plus(sender: UIButton!) {
numArray = getNum(num)
length = numArray.count
if (length > 1){
if plusFlag{
numSumArray[length-1] = SumOfTwo(numArray[length-2], second: numArray[length-1])
numArray[length-1] = numSumArray[length-1]
plusFlag = false
}
if minusFlag{
}
}
plusFlag = true
resultLabel += " + "
resultField.text = resultLabel
num = ""
}
@IBAction func Null(sender: UIButton!) {
num += "0"
resultLabel += "0"
resultField.text = resultLabel
}
@IBAction func One(sender: UIButton!) {
num += "1"
resultLabel += "1"
resultField.text = resultLabel
}
@IBAction func Two(sender: UIButton!) {
num += "2"
resultLabel += "2"
resultField.text = resultLabel
}
@IBAction func Three(sender: UIButton!) {
num += "3"
resultLabel += "3"
resultField.text = resultLabel
}
@IBAction func Four(sender: UIButton!) {
num += "4"
resultLabel += "4"
resultField.text = resultLabel
}
@IBAction func Five(sender: UIButton!) {
num += "5"
resultLabel += "5"
resultField.text = resultLabel
}
@IBAction func Six(sender: UIButton!) {
num += "6"
resultLabel += "6"
resultField.text = resultLabel
}
@IBAction func Seven(sender: UIButton!) {
num += "7"
resultLabel += "7"
resultField.text = resultLabel
}
@IBAction func Eight(sender: UIButton!) {
num += "8"
resultLabel += "8"
resultField.text = resultLabel
}
@IBAction func Nine(sender: UIButton!) {
num += "9"
resultLabel += "9"
resultField.text = resultLabel
}
func getNum(num: String) -> [[Int]]{
var i = 0
for Character in num{
let characterString = String(count: 1, repeatedValue: Character)
typedNum.append(characterString.toInt()!)
i++
}
numArray.append(typedNum)
return numArray
}
func SumOfTwo(first: [Int], second: [Int]) -> [Int]{
var perenos = 0
var newValue: Int
var newArray: [Int] = []
for (index, value) in enumerate(first){
newValue = value + second[index]
perenos = newValue / 10
newValue %= 10
newArray[index] = newValue
}
return newArray
}
override func viewDidLoad() {
super.viewDidLoad()
//let button = UIButton.buttonWithType(UIButtonType.System) as UIButton
//button.addTarget(self, action: "Plus", forControlEvents: UIControlEvents.TouchUpInside)
// 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.
}
}
附言我试图将按钮从 Main.storyboard 重新连接到 ViewController.Swift 但它没有帮助。我没有更改 AppDelegate.Swift
最佳答案
终于找到答案了!我删除了以前从 Main.storyboard 连接的 IBActions:View Controller Scene -> Show the Connections Inspector
关于ios - SWIFT 单击按钮应用程序崩溃，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30041220/