I'm going to be using similar properties on all of my navigation controllers in the different view controllers with the exception of some navigation items and obviously the titles.
I made an extension planning to be able to call it and have my defaults set; however, it doesn't do anything. The code does work when I simply place it in the actual class but not when I call the SetDefaults.
Extensions:
extension UINavigationController {
func setDefaults(titleText: String){
let appDel = UIApplication.sharedApplication().delegate as! AppDelegate
//Set title label
let label = UILabel()
label.font = UIFont(name: appDel.regularDefaultFont, size: 16)
label.text = titleText
label.kern(1.0)
label.sizeToFit()
self.navigationItem.titleView = label
//Set white background tint color
self.navigationBar.barTintColor = UIColor.whiteColor()
//Set navigation bar bottom line
let bottomBorderRect = CGRect(x: 0, y: UIScreen.mainScreen().bounds.height, width: UIScreen.mainScreen().bounds.width, height: 1)
let bottomBorderView = UIView(frame: bottomBorderRect)
bottomBorderView.backgroundColor = UIColor(r: 250, g: 250, b: 250)
self.navigationBar.addSubview(bottomBorderView)
}
}
Call to SetDefaults from class with a navigationcontroller:
self.navigationController.SetDefaults("Login")
In your Storyboard you should select Segue type to show while connecting one View Controller to the other
or simply select your segue > in attributes inspector > storybook segue > kind > show ( e.g) push.
as shown in this image
It'll resolve the issue permanently :)
your code should be look like this.
let vcLogin = loginViewController(
nibName: "loginViewController",
bundle: nil)
navigationController?.pushViewController(vcLogin,
animated: true )
Hopefully this works like a water flow...
Related
I have a View Controller embedded in Navigation Controller. The view has 1 WKWebView, hence, I'm setting view = webView in loadView() override.
So, I'm adding a small little sub navigation bar underneath my navigation controller to allow a user to change their location.I can add the subview to the navigation controller, I'm just not able to make it clickable.
override func loadView() {
let config = WKWebViewConfiguration()
config.processPool = YourModelObject.sharedInstance.processPool
webView = WKWebView(frame: .zero, configuration: config)
webView.navigationDelegate = self
self.webView.scrollView.delegate = self
view = webView
..
if let navigationBar = self.navigationController?.navigationBar {
let secondFrame = CGRect(x: 50, y: 44.1, width: navigationBar.frame.width, height: 30)
let secondLabel = UILabel(frame: secondFrame)
secondLabel.textColor = .black
secondLabel.text = "Getting your location..."
secondLabel.isUserInteractionEnabled = true
let guestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(setLocation(_:)))
secondLabel.addGestureRecognizer(guestureRecognizer)
secondLabel.textAlignment = .left
secondLabel.font = secondLabel.font.withSize(14)
secondLabel.tag = 1002
navigationBar.addSubview(secondLabel)
}
}
And then the setLocation function
#objc func setLocation(_ sender: Any) {
print("location label tapped")
}
But when I tap the label, I'm not getting anything printed in console. I don't know if the use of target: self is wrong for the tapGestureRecognizer or what's going on here.
I too am new to Swift, so my answer is far from guaranteed. I just know what it's like to be in your position,
Perhaps try creating a subclass of navigationBar for the sub navigation bar, i.e. mySubNavigationBar. Then in the subclass's code do all the initialization that you need to do. Including the print line so you'll know if you're getting there.
p.s. I would have put this as a comment, but I don't have enough points to add comments.
This may be the simplest thing you can possibly due in Xcode in Swift and for some reason, it is not working properly.
I want to center a label in a view. The only other thing in the view previously was a webView added programatically but for now I have removed that so basically, I have an empty VC in which I'm trying to center a label.
There are umpteen answers on SO about this and I've tried every combination but can't get it to to work.
Can anyone suggest a foolproof way to accomplish the simple task of centering a UILabel?
Below is the code I currently have and steps I've taken along with result:
I created an empty view controller in Storyboard and embedded it in a navigation controller.
I set the View Controller in Storyboard to my swift VC class. I also have already cleaned project, closed and re-opened XCode and also deleted storyboard and recreated it in case it was corrupted. Still nothing works.
myVC.swift
import UIKit
class myVC: UIViewController,WKScriptMessageHandler, WKNavigationDelegate,WKUIDelegate {
var title= "Hello there"
var loadingLabel = UILabel()
override func viewDidLoad() {
super.viewDidLoad()
webView.navigationDelegate = self
webView.uiDelegate = self
loadingLabel.translatesAutoresizingMaskIntoConstraints = false
// loadingLabel.centerXAnchor.constraint(equalTo: self.view.centerXAnchor).isActive = true
// loadingLabel.centerYAnchor.constraint(equalTo: self.view.centerYAnchor).isActive = true
// loadingLabel = UILabel(frame: CGRect(x: 0, y: self.view.center.y, width: 290, height: 70))
loadingLabel.center = self.view.center
loadingLabel.textAlignment = .center
loadingLabel.font = UIFont(name: "Halvetica", size: 18.0)
loadingLabel.numberOfLines = 0
loadingLabel.text = "TEXT I WANT TO CENTER"
loadingLabel.lineBreakMode = .byTruncatingTail
loadingLabel.center = self.view.center
self.view.addSubview(loadingLabel)
self.title = title
}
override func loadView() {
super.loadView()
}
}
Add the loadingLabel as subview before adding the constraints.
view.addSubview(loadingLabel)
loadingLabel.translatesAutoresizingMaskIntoConstraints = false
loadingLabel.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
loadingLabel.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
can someone help me out in changing font, size and color in prompt string on my NavigationController?
In the attachment, I want to modify "Consulenze" string.
Thank you everybody
Edit: I already tried the solution found here but no results.
You can try following ways:
1) In viewDidLoad of your ViewController add this lines:
self.navigationController?.navigationBar.tintColor = UIColor.white
let navigationTitleFont = UIFont(name: "Avenir", size: 20)!
self.navigationController?.navigationBar.titleTextAttributes = [NSAttributedStringKey.font: navigationTitleFont]
2) You can create completely custom nav bar, just add UIView to the top your view and add all necessary elements - buttons, labels, etc.
Simply add this code in your ViewController. You can change both the Prompt text and color by using this code -
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewWillAppear(_ animated: Bool) {
for view in self.navigationController?.navigationBar.subviews ?? [] {
let subviews = view.subviews
if subviews.count > 0, let label = subviews[0] as? UILabel {
label.textColor = UIColor.red
label.font = UIFont.systemFont(ofSize: 30)
}
}
}
}
OUTPUT -
Additional -
This question already has answers here:
How to display UIView over keyboard in iOS
(7 answers)
Closed 5 years ago.
I need to present a help screen that overlays an open keyboard - the help screen should dim the whole view underneath and keep just a small hole with full transparency to "highlight" that piece. The point is to provide some information about several view components while highlighting them. Without a keyboard, I could just put a view at top of the hierarchy, but in this case the UI uses a keyboard with a custom input accessory that needs to be visible.
I tried to insert a new UIWindow and put it above all the UIWindows:
class CustomTextField: UITextField {
override var canResignFirstResponder: Bool {
return false
}
}
class ViewController: UIViewController {
var textField: UITextField = CustomTextField()
override func viewDidAppear(_ animated: Bool) {
view.backgroundColor = .white
super.viewDidAppear(animated)
textField.frame = CGRect(x: 0, y: 0, width: 200, height: 50)
view.addSubview(textField)
textField.backgroundColor = UIColor.gray
textField.becomeFirstResponder()
DispatchQueue.main.asyncAfter(wallDeadline: .now() + 1) {
self.window.windowLevel = 100000002.0 // based on experiments with UIApplication.shared.windows this should be the top most window
let controller = UIViewController()
controller.view.backgroundColor = UIColor.black.withAlphaComponent(0.5)
self.window.rootViewController = controller
self.window.makeKeyAndVisible()
}
}
let window = UIWindow(frame: UIScreen.main.bounds)
}
But there are two problems with this approach:
The keyboard gets hidden as soon as the window becomes key and visible.
Even when using windowLevel = 100000002.0 it seems that the keyboard is above the window (the keyboard gets animated, so while hiding, I can see that its above my window).
Any ideas how to deal with these two problems? Is it even possible?
OK, as pointed out by #Krunal, this is kind of a duplicate of this question. The trick there is to add the overlay view to the window in which keyboard is (which happens to be the UIApplication.shared.windows.last):
class ViewController: UIViewController {
var textField: UITextField = UITextField()
override func viewDidAppear(_ animated: Bool) {
view.backgroundColor = .white
super.viewDidAppear(animated)
textField.frame = CGRect(x: 0, y: 0, width: 200, height: 50)
view.addSubview(textField)
textField.backgroundColor = UIColor.gray
textField.becomeFirstResponder()
DispatchQueue.main.asyncAfter(wallDeadline: .now() + 1) {
// this does the trick
let customView = UIView(frame: self.view.bounds)
customView.backgroundColor = UIColor.black.withAlphaComponent(0.5)
customView.layer.zPosition = CGFloat(Float.greatestFiniteMagnitude)
UIApplication.shared.windows.last?.addSubview(customView)
}
}
}
I'm developping application in Swift.
This application has many view and I would like to put a UIProgressView on all views
Can we get an array of all storyboard views ?
for exemple :
self.progressBar = UIProgressView(progressViewStyle: .Bar)
self.progressBar?.center = view.center
self.progressBar?.frame = CGRect(x: 0, y: 20, width: view.frame.width, height: CGFloat(1))
self.progressBar?.progress = 1/2
self.progressBar?.trackTintColor = UIColor.lightGrayColor();
self.progressBar?.tintColor = UIColor.redColor();
var arrayViewController : [UIViewController] = [...,...,...]
for controller in arrayViewController {
controller.view.addSubview(self.progressBar)
}
Thank you
Ysée
I assume that what you really want is to have the progress displayed on every view IF there is an operation in progress.
There are many ways to do that (using delegation, NSNotificationCenter, …) but the easiest I can think of would be to rely on viewWillAppear
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
// Check if there's an operation in progress and add progressView if relevant
}
For the user, it will effectively look like you added the progress view to all views.
Why not create a base class that has a lazy stored property of type UIProgressView ? Optionally you can have two methods setProgressViewHidden(hidden : Bool) in order to easily show and hide the progress view and setProgress(progress : Float) to update the progress. Then all your view controllers can subclass this base class and conveniently interact with the progress view.
class ProgressViewController : UIViewController {
lazy var progressView : UIProgressView = {
[unowned self] in
var view = UIProgressView(frame: CGRectMake(0, 20, self.view.frame.size.width, 3))
view.progress = 0.5
view.trackTintColor = UIColor.lightGrayColor()
view.tintColor = UIColor.redColor()
self.view.addSubview(view)
return view
}()
}
To read more about lazy stored properties, check: https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/Properties.html