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

Question

我有 timerRunner() 函数，在单击按钮时运行:

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。 类似这样的事情:

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