ios 从 self.view 中删除所有子视图的最佳方法是什么？
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What is the best way to remove all subviews from you self.view?
提问by Max
I was thinking maybe something like this might work:
我在想也许这样的事情可能会奏效：
for (UIView* b in self.view.subviews)
{
[b removeFromSuperview];
}
I want to remove every kind of subview. UIImages, Buttons, Textfields etc.
我想删除各种子视图。UIImages，按钮，文本字段等。
回答by Max
[self.view.subviews makeObjectsPerformSelector: @selector(removeFromSuperview)];
It's identical to your variant, but slightly shorter.
它与您的变体相同，但略短。
回答by lcl
self.view.subviews.forEach({ extension UIView {
func removeAllSubviews() {
for subview in subviews {
subview.removeFromSuperview()
}
}
}
.removeFromSuperview() })
Identical version in Swift.
Swift 中的相同版本。
回答by mixel
Swift:
迅速：
//adding an object to the view
view.addSubView(UIButton())
// you can remove any UIControls you have added with this code
view.subviews.forEach { (item) in
item.removeFromSuperview()
}
回答by spikee
You can use like this
你可以这样使用
extension UIView {
func removeAllSubviews() {
subviews.forEach { ##代码##.removeFromSuperview() }
}
}
view is the view that you want to remove everything from. you are just removing every subview by doing forEach
view 是您要从中删除所有内容的视图。您只是通过执行 forEach 删除每个子视图
回答by ishwardgret
For Swift 4+.You can make a extension to UIView. Call it whenever necessary.
对于 Swift 4+。您可以扩展到UIView. 必要时调用它。
