I have a parent UIView with a number of subviews. Periodically I need to remove a subview and completely remove it from the system. What is the correct way to do this? I tried this:
UIView *v = [self.containerView viewWithTag:[n integerValue]];
[v removeFromSuperview];
and got a bizarre result. Previously present UIViews disappeared as well. What's going on?
Swift 4: extend UIView
extension UIView {
public func removeAllSubviews() {
for subview in self.subviews {
subview.removeFromSuperview()
}
}
}
or
extension UIView {
public func removeAllSubviews() {
self.subviews.forEach { $0.removeFromSuperview() }
}
}
override func viewWillAppear(_ animated: Bool)
{
super.viewWillAppear(animated)
if let topController = UIApplication.topViewController() {
if topController.isKind(of: ProviderHome.self)
{
let arrOfSuview = self.view.subviews
if arrOfSuview.count > 1
{
print("Davender Arr of subviews : \(arrOfSuview)")
for i in 0..<arrOfSuview.count
{
let objSub = arrOfSuview[i]
if objSub.tag == 101
{
objSub.removeFromSuperview()
}
}
}
NotificationCenter.default.addObserver(self, selector: #selector(ProviderHome.handelPushNotification), name: NSNotification.Name(rawValue: "handelPush"), object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(ProviderHome.handelLocalNotification), name: NSNotification.Name(rawValue: "handelLocal"), object: nil)
}
}
}
@objc func handelPushNotification(_ notification: NSNotification) {
let arrOfSuview = self.view.subviews
if arrOfSuview.count > 1
{
print("Davender Arr of subviews : \(arrOfSuview)")
for i in 0..<arrOfSuview.count
{
let objSub = arrOfSuview[i]
if objSub.tag == 101
{
objSub.removeFromSuperview()
}
}
}
if notification.userInfo != nil
{
let dict = notification.userInfo as! Dictionary<String, Any>
let d = dict["data"] as! Dictionary<String, Any>
let action = d["gcm.notification.label"] as! String
print("current message id :- ", action)
self.getNotificationId = action
if getNotificationId != ""
{
//call the api for getting Data
AppDelegate.sharedInstance().myCurrentnotificationId = getNotificationId
//working code
let storyboard = UIStoryboard(name: "Provider", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "CommonPopUpsVC") as! CommonPopUpsVC
vc.modalPresentationStyle = .overFullScreen
vc.view.frame = self.view.frame
vc.view.tag = 101
self.view.addSubview(vc.view)
self.present(vc, animated: true, completion: nil)
}
}
}