Question

我可以隐藏我的按钮，但不能取消隐藏。

我隐藏answerOneCover 按钮，点按：

@IBAction func answerOneCoverTapped(_ sender: Any) {
    animateButtonCoverOut(button: answerOneCover)
}

func animateButtonCoverOut(button: UIButton) {

    UIView.animate(withDuration: 1.0, delay: 0.1, options:
        UIViewAnimationOptions.curveEaseOut, animations: {
            button.alpha = 0
    }, completion: { finished in
        button.isHidden = true
    })
}

当我点击其他按钮answerOneCover按钮时，我尝试取消隐藏answerOneButtonText按钮：

@IBAction func answerOneButtonTextTapped(_ sender: Any) { answerOneCover.isHidden = false }

但我无法取消answerOneCover取消隐藏。我有什么方法可以做到这一点吗？

Answer 1

您必须将按钮 Alpha 设置为 1 。将代码更改为如下所示：

@IBAction func answerOneButtonTextTapped(_ sender: Any) {
    answerOneCover.alpha = 1
    answerOneCover.isHidden = false
}

OR 您可以将其置于动画完成中，如下所示：

func animateButtonCoverOut(button: UIButton) {

    UIView.animate(withDuration: 1.0, delay: 0.1, options:
        UIViewAnimationOptions.curveEaseOut, animations: {
            button.alpha = 0
    }, completion: { finished in
        button.isHidden = true
        button.alpha = 1
    })
}

按钮不会取消隐藏

1 个答案: