touchesBegan-只需要最后一次触摸操作-iPhone [英] touchesBegan - Only needs the last touch action - iPhone

问题描述

在

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

方法我正在做一些动作

- (void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event

我正在做其他动作.

如果我点击3次，touchesBegan将呼叫3次.我想要的是，如果用户连续轻按仅应执行的最后一次触摸操作.有没有可能?

If I'm tapping 3 times the touchesBegan will call 3 times. What I want is if the user continuously taps only the last touch action should perform. Is it possible or not?

推荐答案

您可以改用 UITapGestureRecognizer ，并在第一次点击后将其禁用.

You can try a UITapGestureRecognizer instead, and disable it after the first tap.

否则，您可以在 touchesEnded:withEvent:和 cancelPreviousPerformRequestsWithTarget:selector:object:中短暂使用 performSelector:withObject:afterDelay:>在 touchesBegan:withEvent:中.

Otherwise, you can use performSelector:withObject:afterDelay: with a short delay in touchesEnded:withEvent: and cancelPreviousPerformRequestsWithTarget:selector:object: in touchesBegan:withEvent:.

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