由于未捕获的异常,我一直收到SIGABRT错误:
2016-02-11 01:54:23.232 time_01[1937:52731] -[time_01.ViewController increaseTime]: unrecognized selector sent to instance 0x7fdf72d12c20
2016-02-11 01:54:23.235 time_01[1937:52731] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[time_01.ViewController increaseTime]: unrecognized selector sent to instance 0x7fdf72d12c20'
*** First throw call stack:
(
0 CoreFoundation 0x000000010e6adf45 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x00000001103d1deb objc_exception_throw + 48
2 CoreFoundation 0x000000010e6b656d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x000000010e603eea ___forwarding___ + 970
4 CoreFoundation 0x000000010e603a98 _CF_forwarding_prep_0 + 120
5 Foundation 0x000000010ea93181 __NSFireTimer + 83
6 CoreFoundation 0x000000010e60e264 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
7 CoreFoundation 0x000000010e60de11 __CFRunLoopDoTimer + 1089
8 CoreFoundation 0x000000010e5cf821 __CFRunLoopRun + 1937
9 CoreFoundation 0x000000010e5cee08 CFRunLoopRunSpecific + 488
10 GraphicsServices 0x0000000112ca1ad2 GSEventRunModal + 161
11 UIKit 0x000000010eeca30d UIApplicationMain + 171
12 time_01 0x000000010e4d140d main + 109
13 libdyld.dylib 0x0000000110ed992d start + 1
14 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
我查看了我的代码中的简单计时器,我无法弄清楚如何更改代码,因此它不会返回错误。
var timer = NSTimer()
var time = 0
@IBOutlet var timeText: UILabel!
func increaseTimer() {
time = time + 1
timeText.text = "\(time)"
}
@IBAction func play(sender: AnyObject) {
timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: Selector("increaseTime"), userInfo: nil, repeats: true)
}
谢谢!
答案 0 :(得分:1)
这是因为您的函数名称为func increaseTimer()
,而在设置选择器时,您正在设置selector: Selector("increaseTime")
。
因此,要解决您的问题,请重命名您的方法:
func increaseTime() {
time = time + 1
timeText.text = "\(time)"
}
@IBAction func play(sender: AnyObject) {
timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: Selector("increaseTime"), userInfo: nil, repeats: true)
}
或者在设置选择器时更新方法名称:
func increaseTimer() {
time = time + 1
timeText.text = "\(time)"
}
@IBAction func play(sender: AnyObject) {
timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: Selector("increaseTimer"), userInfo: nil, repeats: true)
}
答案 1 :(得分:0)
崩溃消息最重要的部分是
由于未捕获的异常而终止应用 'NSInvalidArgumentException',原因:' - [time_01.ViewController increaseTime]:无法识别的选择器发送到实例0x7fdf72d12c20'
您的计时器会发送一个选择器increaseTime
,但没有具有此名称的属性或方法。
编程是一项非常精确的业务。丢失的字符或案例不匹配可能会破坏整个系统。
您必须确保方法和选择器的签名完全匹配。
答案 2 :(得分:0)
这是我在我的一个项目中使用的,它工作正常。
这是计时器:
self.timer = NSTimer.scheduledTimerWithTimeInterval(1.0,target:self, selector:“startQuestionTimer:”,userInfo:nil,重复:true)
以下是方法:
func startQuestionTimer(obj:NSTimer){
}
这应该可以肯定。