由于未捕获的异常 'NSInvalidArgumentException' 而终止应用程序。发送到实例的无法识别的选择器

Question

我有 timerRunner() 单击按钮时运行的函数：

func timerRunner() {
        timer = Timer.scheduledTimer(timeInterval: 1.0, target: target.self, selector: (#selector(self.timeUpdater)), userInfo: nil, repeats: true)
    }

Timer.scheduledTimer的选择器选择如下：

@objc func timeUpdater() {
    counter = counter + 1

    timerLabel.text = secondConverter(seconds: counter)

}

但这是我收到的错误消息：

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[_SwiftValue timeUpdater]: unrecognized selector sent to instance '

Answer 1

据我所知，timeUpdater 函数应该有一个 Timer 类型的参数。类似的东西：

@objc func timeUpdater(_ timer: Timer) {
    counter = counter + 1
    timerLabel.text = secondConverter(seconds: counter)
}

由于未捕获的异常 'NSInvalidArgumentException' 而终止应用程序。发送到实例的无法识别的选择器

Terminating app due to uncaught exception 'NSInvalidArgumentException'. unrecognized selector sent to instance

timer

unrecognized-selector

swift