UIView alpha 0 但仍接收触摸事件? [英] UIView alpha 0 but still receive touch events?

问题描述

我试图隐藏一个 uiview，但仍然让它接收触摸事件.我将 alpha 设置为 0，如下所示:

I am trying to hide a uiview but still have it receive touch events. I am setting the alpha to 0 like so:

mainView.alpha = 0.0

我也试过将其设置为 true 但它没有做任何事情

also I've tried setting this to true but it doesn't do anything

mainView.userInteractionEnabled = true

问题是当我这样做时它不再接收触摸事件.如何使其能够接收触摸事件但被有效隐藏?

Trouble is it no longer receives touch events when I do this. How can I enable it to receive touch events but be effectively hidden?

推荐答案

将 UIView 的 backgroundColor 设置为 UIColor.clear.

Set your UIView's backgroundColor to UIColor.clear.

mainView.backgroundColor = .clear

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