如何在iPhone上循环振动

Question

我如何循环这段代码：

AudioServicesPlayAlertSound(SystemSoundID(kSystemSoundID_Vibrate))

使手机不断振动。

Answer 1

尝试一下：

func vibrate(current:Int, max: Int) {
    AudioServicesPlayAlertSoundWithCompletion(kSystemSoundID_Vibrate) {
        if current <= max {
            self.vibrate(current: current + 1, max: max)
        }
    }
}