我有点击按钮时运行的timerRunner()
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:
由于未捕获的异常'NSInvalidArgumentException'终止应用程序,原因:' - [_ SwiftValue timeUpdater]:无法识别的选择器发送到实例'
据我所知,timeUpdater
函数应该有一个Timer
类型的参数。像这样的东西:
@objc func timeUpdater(_ timer: Timer) {
counter = counter + 1
timerLabel.text = secondConverter(seconds: counter)
}