在过去的三个小时里,这一直困扰着我,但我似乎并没有动脑筋。
我有以下IBOutlet:
@IBAction func simulateTheDay(sender: UIButton) {
if( self.iceCubesUsing == 0 || self.lemonsUsing == 0){
showAlertMessage(message: "You need to use at least one lemon or ice cube")
}
var numberOfCustomers = 0;
var winnings = 0;
self.lemonToIceCubeRatio = self.lemonsUsing / self.iceCubesUsing
self.lemonsToPurchase = 0
self.iceCubesToPurchase = 0
self.lemonsUsing = 0
self.iceCubesUsing = 0
self.customers = [];
do{
numberOfCustomers = Int(arc4random_uniform(UInt32(11)));
}while( numberOfCustomers == 0)
for(var i=0;i<numberOfCustomers;i++){
self.customers.append(Customer(preference: Double(arc4random_uniform(UInt32(101)))/101.0))
}
winnings = standBrain.calculateWinnings(self.customers, acidity: self.lemonToIceCubeRatio)
self.money += winnings
updateAssets()
}
无论身在何处。是我班上的一个全局变量。每当我单击与此插座相连的按钮时,应用程序就会崩溃并在顶部突出显示我的if()语句,并说“ EXC_BAD_INSTRUCTION(code = EXCI386_INVOP,subcode = 0x0)”
如果我将相同的代码复制到另一个IBAction中,则效果很好。奇怪的地方来了。如果删除带有内容的if语句,它将在我的while语句中崩溃。如果我删除了它,它将在我的for语句中崩溃。如果我什至删除了它,它也会在函数结尾崩溃,在所有情况下都出现相同的错误消息。
如果我只离开:showAlertMessage(message: "You need to use at least one lemon or ice cube")
它似乎没有跳到我的功能。
我尝试删除IBOutlet并重新创建它,尝试在我的情节提要中创建一个新的UIButton,并将其链接到一个新的IBOutlet,尝试清理该项目,并尝试在iOS Simulator中清除所有设置和数据。似乎没有任何效果。
这里是以前的堆栈跟踪,如果有帮助的话。
LemonadeStand`@objc LemonadeStand.ViewController.simulateTheDay (LemonadeStand.ViewController)(ObjectiveC.UIButton) -> () at ViewController.swift:
0x10466a800: pushq %rbp
0x10466a801: movq %rsp, %rbp
0x10466a804: subq $0x30, %rsp
0x10466a808: movq %rdx, -0x8(%rbp)
0x10466a80c: movq -0x8(%rbp), %rdx
0x10466a810: movq %rdi, -0x10(%rbp)
0x10466a814: movq %rdx, %rdi
0x10466a817: movq %rsi, -0x18(%rbp)
0x10466a81b: movq %rdx, -0x20(%rbp)
0x10466a81f: callq 0x10466e1a4 ; symbol stub for: objc_retain
0x10466a824: movq -0x10(%rbp), %rdi
0x10466a828: movq %rax, -0x28(%rbp)
0x10466a82c: callq 0x10466e1a4 ; symbol stub for: objc_retain
0x10466a831: movq -0x20(%rbp), %rdi
0x10466a835: movq -0x10(%rbp), %rsi
0x10466a839: movq %rax, -0x30(%rbp)
0x10466a83d: callq 0x10466a0e0 ; LemonadeStand.ViewController.simulateTheDay (LemonadeStand.ViewController)(ObjectiveC.UIButton) -> () at ViewController.swift:65
0x10466a842: addq $0x30, %rsp
0x10466a846: popq %rbp
0x10466a847: retq
编辑:添加了我按钮的属性
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