3D触控/强制触控实现 [英] 3D touch/Force touch implementation

问题描述

我们如何实施3D触摸以检查用户是否点击 UIView 或强制触摸 UIView ？

How can we implement 3D touch to check if the user taps on UIView or force touch on UIView?

有没有办法用 UIGestureRecognize 或仅用 UITouch ？

推荐答案

您可以在没有指定手势识别器的情况下执行此操作。您不需要调整touchesEnded和touchesBegan方法，而只需要touchesMoved来获取正确的值。从开始/结束获得uitouch的力量将返回奇怪的值。

You can do it without a designated gesture recognizer. You do not need to adjust the touchesEnded and touchesBegan method, but simply the touchesMoved to obtain the correct values. getting the force of a uitouch from began/ended will return weird values.

UITouch *touch = [touches anyObject];

CGFloat maximumPossibleForce = touch.maximumPossibleForce;
CGFloat force = touch.force;
CGFloat normalizedForce = force/maximumPossibleForce;

然后，设置一个强制阈值并将normalizedForce与此阈值进行比较（0.75对我来说似乎没问题）。

then, set a force threshold and compare the normalizedForce to this threshold (0.75 seems fine for me).

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