切换UILabel的隐藏状态(Toggle hidden state of UILabel)

 我想用按钮来切换几个UILabel的隐藏状态。 按下按钮一次，取消隐藏它们，再次按下隐藏标签，隐藏这些标签的默认状态。 
 
 这是我认为会工作（但显然不）： 
 
@IBAction func information(sender: AnyObject, forEvent event: UIEvent)
{
    if(infoLocation.hidden = true)
    {
        self.infoLocation.hidden = false
    }
    else
    {
        self.infoLocation.hidden = true
    }

    //**********************************//
    if(infoName.hidden = true)
    {
        self.infoName.hidden = false
    }
    else
    {
        self.infoName.hidden = true
    }

    //**********************************//
    if(infoVersion.hidden = true)
    {
        self.infoVersion.hidden = false
    }
    else
    {
        self.infoVersion.hidden = true
    }


}

I want to use the press of a button to toggle the hidden state of a couple of UILabels. Press the button once, it unhides them, press again the labels are hidden, the default state for these labels being hidden.
 
Here is what I thought would work (but obviously does not):
 
@IBAction func information(sender: AnyObject, forEvent event: UIEvent)
{
    if(infoLocation.hidden = true)
    {
        self.infoLocation.hidden = false
    }
    else
    {
        self.infoLocation.hidden = true
    }

    //**********************************//
    if(infoName.hidden = true)
    {
        self.infoName.hidden = false
    }
    else
    {
        self.infoName.hidden = true
    }

    //**********************************//
    if(infoVersion.hidden = true)
    {
        self.infoVersion.hidden = false
    }
    else
    {
        self.infoVersion.hidden = true
    }


}

原文：https://stackoverflow.com/questions/30036615