ios 快速删除动画
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Remove animation in swift
提问by Almazini
I have a text field where user should enter info. And a label which points user to text field (like a hint).
我有一个文本字段，用户应该在其中输入信息。以及将用户指向文本字段的标签（如提示）。
I want to stop animation and remove hint label once user presses the text field to enter data.
一旦用户按下文本字段输入数据，我想停止动画并删除提示标签。
There is repeating animation on text label. Was created by:
文本标签上有重复动画。创建者：
override func viewDidLoad() {
super.viewDidLoad()
textInput.addTarget(self, action: #selector(CalculatorViewController.removeAnimation(_:)), forControlEvents: UIControlEvents.TouchDown)
self.hintLabel.alpha = 0.0
UIView.animateWithDuration(1.5, delay: 0, options: .Repeat
, animations: ({
self.hintLabel.alpha = 1.0
}), completion: nil
)
After it I have created a function to remove annotation
之后我创建了一个删除注释的函数
func removeAnimation(textField: UITextField) {
view.layer.removeAllAnimations()
self.view.layer.removeAllAnimations()
print("is it working?!")
}
Should work according to documentation.
应该根据文档工作。
My label keeps flashing even though I see the string printed in console. I guess problem is that animation is repeated but have no clue how to resolve this issue.
即使我看到控制台中打印的字符串，我的标签也会一直闪烁。我想问题是动画重复了，但不知道如何解决这个问题。
回答by Rutvik Kanbargi
//Just remove the animation from the label. It will Work
func remove()
{
self.hintLabel.layer.removeAllAnimations()
self.view.layer.removeAllAnimations()
self.view.layoutIfNeeded()
}
Update:
更新：
If you want to go nuclear, you could do this, as well:
如果你想去核，你也可以这样做：
func nukeAllAnimations() {
self.view.subviews.forEach({##代码##.layer.removeAllAnimations()})
self.view.layer.removeAllAnimations()
self.view.layoutIfNeeded()
}
