[英]IOS Swift3 how to Remove Custom UIView randomly
我正在swift 3中构建一个iOS应用程序,我正在创建动态UIViews。 我需要随机删除自定义视图。 请帮帮我,我坚持了很久。 提前致谢
class ViewController: UIViewController {
var myView: subView!
var y : CGFloat!
@IBOutlet weak var addButton: UIButton!
override func viewDidLoad() {
y = 1
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
func cancelbutton(_ sender: UIButton) {
myView.removeFromSuperview()
}
@IBAction func buttonAction(_ sender: Any) {
y = y + 110
myView = subView(frame: CGRect(x: 80, y: y, width: 300, height: 100))
myView.backgroundColor = UIColor.green
myView.actionButton.addTarget(self, action: (#selector(cancelbutton(_:))), for: UIControlEvents.touchUpInside)
self.view.addSubview(myView)
}
}
正如您在上面的图像中看到的,当我点击关闭时,SubView(用户视图)关闭,但是绿色的MyView不会停留在那里。 有人请帮助.........
required init?(coder aDecoder: NSCoder)
{
super.init(coder: aDecoder)
Bundle.main.loadNibNamed("subView",owner: self, options:nil)
self.addSubview(self.views)
Bundle.main.loadNibNamed("subView",owner: self, options:nil)
self.addSubview(self.views)
}
override init(frame: CGRect)
{
super.init(frame: frame)
Bundle.main.loadNibNamed("subView", owner: self, options: nil)
views.frame = bounds
self.addSubview(self.views)
}
@IBAction func buttonAction(_ sender: Any) {
views.removeFromSuperview()
}
你做错的是你添加了多个subView视图,你选择的不删除的原因。 请修改您的代码,如下所示。 我所做的是,无论何时添加新的子subView
您还将设置其标记值,并在选择视图以删除其标记值并在该标记值上放置if
语句。
class ViewController: UIViewController {
var myView: subView!
var y : CGFloat!
var tag : Int = 0
@IBOutlet weak var addButton: UIButton!
override func viewDidLoad() {
y = 1
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
func cancelbutton(_ sender: UIButton)
{
let selectViewTagValue : Int = sender.tag /// save the selected view tag value
for object in self.view.subviews {
if ((object is subView) && object.tag == selectViewTagValue)
{
object.removeFromSuperview()
}
}
}
@IBAction func buttonAction(_ sender: Any) {
y = y + 110
myView = subView(frame: CGRect(x: 80, y: y, width: 300, height: 100))
myView.tag = tag
myView.actionButton.tag = tag
tag = tag + 1
myView.backgroundColor = UIColor.green
myView.actionButton.addTarget(self, action: (#selector(cancelbutton(_:))), for: UIControlEvents.touchUpInside)
self.view.addSubview(myView)
}
尝试更改取消操作,如下所示:
func cancelbutton(_ sender: UIButton)
{
if let myView = sender.superview {
myView.removeFromSuperview()
}
}
只需删除按钮的容器视图,而不是全局myView。
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