I added a label to my NavigationBar with this code:
let navigationBar = self.navigationController?.navigationBar
let moneyFrame = CGRect(x: 330, y: 0, width: (navigationBar?.frame.width)!/2, height: (navigationBar?.frame.height)!)
let moneyLabel = UILabel(frame: moneyFrame)
moneyLabel.text = "\(money)"
navigationBar?.addSubview(moneyLabel)
The problem is: when I want to change the value of the variable "money", I always came with the solution to add another label. I just want to change the text of the label in the NavigationBar.
In the class scope define a label like this:
var moneyLabel: UILabel?
then in your function or wherever the code you posted sits in the class, do this:
func myFunctionThatSetupNavigationLabel() {
let navigationBar = self.navigationController?.navigationBar
let moneyFrame = CGRect(x: 330, y: 0, width:
(navigationBar?.frame.width)!/2, height: (navigationBar?.frame.height)!)
moneyLabel = UILabel(frame: moneyFrame)
moneyLabel.text = "\(money)"
navigationBar?.addSubview(moneyLabel)
}
Now just add this function to edit the title label:
func updateTitle(title: String) {
if let myTitleView = self.moneyLabel {
myTitleView.text = title
}
}
You could add the label to the navigation bar as a custom view.
In the class scope define a label:
var label = UILabel()
then in viewDidLoad:
override func viewDidLoad() {
super.viewDidLoad()
let textlabel = UIBarButtonItem(customView: label)
navigationItem.rightBarButtonItem = textlabel
label.text = "money"
}
then whenever you want to change the text label you could simply just write the next code:
label.text = "whatever you want"
Related
This question already has answers here:
Add padding between label and its border
(4 answers)
Closed 8 months ago.
I have created a text programmatically with a grey background using UILabel.
Now I would like to add padding to this paragraph/text. Also, it would be great if you could show me how to add margin to my UILabel as well.
import UIKit
final class SignUpViewController: UIViewController {
public let identifier = "Sign Up"
private let logoImage : UIImageView = {
let imageView = UIImageView()
imageView.layer.masksToBounds = true
imageView.contentMode = .scaleAspectFit
imageView.image = UIImage(named: "MyLogoWithTitle")
imageView.clipsToBounds = true
return imageView
}()
private let instructionText : UILabel = {
let label = UILabel()
label.text = "Please read terms and conditions below carefully before proceeding with the registration."
label.backgroundColor = UIColor().colorFromHex(hex: "#2C333C", opacity: 0.4)
label.numberOfLines = 0
label.tintColor = .white
return label
}()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
view.addSubview(logoImage)
view.addSubview(instructionText)
view.backgroundColor = UIColor().colorFromHex(hex: "#141920", opacity: 1.0)
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
logoImage.frame = CGRect(x: 0,
y: 0,
width: 140,
height: 60)
logoImage.center = CGPoint(x: view.center.x, y: view.height/5)
instructionText.frame = CGRect(
x: 5,
y: 5 + logoImage.bottom,
width: view.width - 20,
height: 50)
.integral
instructionText.layer.cornerRadius = 10
}
}
Notice that I created an extension to UIColor so that I can input hex color in this way - UIColor().colorFromHex(hex: "#2C333C", opacity: 0.4) .
I am looking forward to hearing from you. Thank you.
You can insert this UILabel into the container (any UIView) and set its position inside.
But the simplest trick is to use UIButton instead of UILabel. You can configure UIEdgeInsets for padding.
So that UIButton does not act as a button simply set button.isUserInteractionEnabled = false.
By default, text in the button are placed in the center, but its position is easy to change with contentHorizontalAlignment and contentVerticalAlignment
And as a bonus, you can add icons right near to the text. :)
UPD.
Could you give me a simple example? I tried that way but I didn't get the result I expected. – Punreach Rany
let buttonUsedAsLabel = UIButton()
// Your question was about padding
// It's it!
buttonUsedAsLabel.titleEdgeInsets = UIEdgeInsets(top: 5, left: 20, bottom: 5, right: 20)
// Make it not user interactable as UILabel is
buttonUsedAsLabel.isUserInteractionEnabled = false
// set any other properties
buttonUsedAsLabel.setTitleColor(.white, for: .normal)
buttonUsedAsLabel.contentVerticalAlignment = .top
buttonUsedAsLabel.contentHorizontalAlignment = .left
// Set title propeties AFTER it was created with text because it's nullable
// You can use attributed title also
// Never use any (button.titleLabel) before its creation
// for example: (button.titleLabel?.text = "zzz") do nothing here
buttonUsedAsLabel.setTitle("This is the text", for: .normal)
buttonUsedAsLabel.titleLabel?.font = .systemFont(ofSize: 20, weight: .medium)
buttonUsedAsLabel.titleLabel?.numberOfLines = 0
buttonUsedAsLabel.titleLabel?.lineBreakMode = .byWordWrapping
// and so on
// ...
// This is the triсk :)
Of course, you can do it with a storyboard if prefer.
1. Add this class
PaddingLabel.swift
import UIKit
class PaddingLabel: UILabel {
var edgeInset: UIEdgeInsets = .zero
override func drawText(in rect: CGRect) {
let insets = UIEdgeInsets.init(top: edgeInset.top, left: edgeInset.left, bottom: edgeInset.bottom, right: edgeInset.right)
super.drawText(in: rect.inset(by: insets))
}
override var intrinsicContentSize: CGSize {
let size = super.intrinsicContentSize
return CGSize(width: size.width + edgeInset.left + edgeInset.right, height: size.height + edgeInset.top + edgeInset.bottom)
}
}
2. Add this code to your ViewController
let label = PaddingLabel()
override func viewDidLoad() {
super.viewDidLoad()
label.backgroundColor = UIColor().colorFromHex(hex: "#2C333C", opacity: 0.4)
//Setting the padding label
label.edgeInset = UIEdgeInsets(top: 5, left: 10, bottom: 5, right: 10)
}
The answer to the link below is that I wrote the same content based on the storyboard.
Add padding between label and its border
I use textfield. Set padding and text in textfield. And do not allow editing.
extension UITextField {
func addLeftPadding() {
let paddingView = UIView(frame: CGRect(x: 0, y: 0, width: 12, height: self.frame.height))
self.leftView = paddingView
self.leftViewMode = ViewMode.always
}
}
//ViewController
#IBOutlet weak var myTextField: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
myTextField.addLeftPadding()
myTextField.isUserInteractionEnabled = false
myTextField.text = "your label text"
}
I have created a UITextView object and when I interact with it in the Live View, the keyboard appears in the UI and the only way to enter text seems to be from that keyboard. Is this a recent change in Swift Playgrounds? Is there any way users can enter text from their physical keyboards?
Code:
let textView = UITextView(frame: CGRect(x: 0, y: 0, width: 1024, height: 768))
textView.textColor = .green
textView.font = UIFont(name: "Courier", size: 22)
textView.backgroundColor = .black
mainView.addSubview(textView)
You can add gesture recognizer to a superview, assign action with custom close keyboard method and call textField.resignFirstResponder() inside it.
Here is a quick example:
import UIKit
import PlaygroundSupport
class MyViewController : UIViewController {
private var textView: UITextView?
override func loadView() {
let view = UIView()
view.backgroundColor = .white
textView = UITextView()
if let textView = textView {
textView.frame = CGRect(x: 150, y: 200, width: 200, height: 20)
textView.text = "Hello World!"
textView.textColor = .black
view.addSubview(textView)
}
self.view = view
}
override func viewDidLoad() {
super.viewDidLoad()
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(hideKeyboard))
self.view.addGestureRecognizer(tapGesture)
}
#objc func hideKeyboard() {
textView?.resignFirstResponder()
}
}
// Present the view controller in the Live View window
PlaygroundPage.current.liveView = MyViewController()
I would like to add a cycle view and a label to UINavigation. like this:
I can set a label to my UINavigation by this code:
if let navigationBar = self.navigationController?.navigationBar {
let firstFrame = CGRect(x: 300, y: 0, width: navigationBar.frame.width/2, height: navigationBar.frame.height)
let firstLabel = UILabel(frame: firstFrame)
firstLabel.text = "First"
navigationBar.addSubview(firstLabel)
}
but I have two problems by this code:
1.how to set x position correctly?
(to test I set 300 value, but this value show different position on different screen sizes)
2. how to set a cycle background to this label ?
You can add both of the view (red circle) and the label (number 16) programmatically as a subView to the button of the bar button item.
What you should do is:
Connect the button as an IBOutlet to its ViewController:
Make sure that the connected component is the UIButton, but NOT UIBarButtonItem.
As you can see, I called it btnMenu.
Create your views (red circle and number label) and add it to the btnMenu:
It should be similar to:
import UIKit
class ViewController: UIViewController {
//...
#IBOutlet weak var btnMenu: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
//...
// setup the red circle UIView
let redCircleView = UIView(frame: CGRect(x: 0, y: 0, width: 20, height: 20))
redCircleView.backgroundColor = UIColor.red
redCircleView.layer.cornerRadius = view.frame.size.width / 2
// setup the number UILabel
let label = UILabel(frame: CGRect(x: 4, y: 0, width: 20, height: 20))
label.textColor = UIColor.white
label.font = UIFont.systemFont(ofSize: 10)
label.text = "16"
// adding the label into the red circle
redCircleView.addSubview(label)
// adding the red circle into the menu button
btnMenu.addSubview(redCircleView)
//...
}
//...
}
And that's it!
UIButton is a subclass of UIView, meaning that you can add subviews to it (addSubview(_:)).
Output:
Hope this helped.
I am trying to create a custom titleView for a navigation bar. I am able to set the titleView in the root view controller that is embedded in a navigation controller.
When I push the second view controller onto the stack and try to set the titleView for this view controller it does not work. The titleView quickly appears and disappears. When I go back to the previous view controller this titleView quickly appears and disappears now also.
Does anyone know why this is happening or how to set the titleView correctly without flashing and disappearing?
class FirstViewController: UIViewController {
var titleView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
addTitleView()
}
func addTitleView() {
titleView = UIView(frame: CGRect(x: 0, y: 0, width: 150, height: 44))
let companyLabel = UILabel(frame: CGRect(x: 0, y: 3, width: 150, height: 11))
companyLabel.text = "CPS Dashboard"
companyLabel.textColor = UIColor.grayColor()
companyLabel.textAlignment = .Center
companyLabel.font = UIFont.systemFontOfSize(9)
titleView.addSubview(companyLabel)
let titleLabel = UILabel(frame: CGRect(x: 0, y: 16, width: 150, height: 18))
titleLabel.text = "Dashboard"
titleLabel.textColor = UIColor.blackColor()
titleLabel.textAlignment = .Center
titleLabel.font = UIFont.systemFontOfSize(15)
titleView.addSubview(titleLabel)
navigationItem.titleView = titleView
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "Show" {
let controller = segue.destinationViewController as! SecondViewController
controller.titleView = titleView
}
}
}
The second viewcontroller:
class SecondViewController: UIViewController {
var titleView: UIView?
override func viewDidLoad() {
super.viewDidLoad()
if let titleView = titleView {
navigationItem.titleView = titleView
}
}
}
I found a solution. I copied addTitleView() method from FirstViewController into SecondViewController, and called both of them in viewDidLoad(). This worked exactly as I wanted it to. For some reason it was not working to pass the titleView forward as a property and assigning it to navigationItem.titleView.
class FirstViewController: UIViewController {
var titleView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
addTitleView()
}
func addTitleView() {
titleView = UIView(frame: CGRect(x: 0, y: 0, width: 150, height: 44))
let companyLabel = UILabel(frame: CGRect(x: 0, y: 3, width: 150, height: 11))
companyLabel.text = "CPS Dashboard"
companyLabel.textColor = UIColor.grayColor()
companyLabel.textAlignment = .Center
companyLabel.font = UIFont.systemFontOfSize(9)
titleView.addSubview(companyLabel)
let titleLabel = UILabel(frame: CGRect(x: 0, y: 16, width: 150, height: 18))
titleLabel.text = "Dashboard"
titleLabel.textColor = UIColor.blackColor()
titleLabel.textAlignment = .Center
titleLabel.font = UIFont.systemFontOfSize(15)
titleView.addSubview(titleLabel)
navigationItem.titleView = titleView
}
}
The second viewcontroller:
class SecondViewController: UIViewController {
var titleView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
addTitleView()
}
func addTitleView() {
titleView = UIView(frame: CGRect(x: 0, y: 0, width: 150, height: 44))
let companyLabel = UILabel(frame: CGRect(x: 0, y: 3, width: 150, height: 11))
companyLabel.text = "CPS Dashboard"
companyLabel.textColor = UIColor.grayColor()
companyLabel.textAlignment = .Center
companyLabel.font = UIFont.systemFontOfSize(9)
titleView.addSubview(companyLabel)
let titleLabel = UILabel(frame: CGRect(x: 0, y: 16, width: 150, height: 18))
titleLabel.text = "Dashboard"
titleLabel.textColor = UIColor.blackColor()
titleLabel.textAlignment = .Center
titleLabel.font = UIFont.systemFontOfSize(15)
titleView.addSubview(titleLabel)
navigationItem.titleView = titleView
}
}
My solution is simple, and it works:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
if let tv = navigationItem.titleView {
print("transform", tv.transform)) // is always identity
let bounds = tv.bounds
print("bounds", bounds) // its origin may not be zero.
tv.bounds = CGRect(origin: .zero, size: bounds.size)
print("new bounds", tv.bounds)
}
}
Using Xcode's view debugger, you will find that titleView.bounds.origin is not zero.
How to let it happen again, two steps:
1. UIViewController A and B; A has custom navigationItem.titleView, B hides navigationBar in its viewWillAppear(); when B poped, A.viewWillAppear() setNavigationBar(hidden: false, animated: true)
2. user-driven popViewController is canceled by lifting your hand.
Then you will found, A's navigationBar is blank.
I was having this same issue, but none of the above solutions fixed it for me. My issue was that I was setting translatesAutoresizingMaskIntoConstraints to false. I imagine this caused the appearing/disappearing because it needs to be set to true in order to constrain the view internally to the navigation bar.
I am trying to add two labels in the place where the title is shown in navigation bar, but I am struggling to do so. It would be very nice if I could achieve this with storyboard but as I can see I cannot do it.
As I have seen I need to use navigationItem but I do not know how exactly to do that. If anyone have any example or if anyone could explain me more specifically how to do so would be wonderful.
And I need to mention that I am completely unfamiliar with Obj-C, so any help would need to be in Swift.
I am not sure if you can do it from the storyboard, but if you want to add two title labels, you can do the following in the viewDidLoad() method of the view controller for which you want the two titles:
if let navigationBar = self.navigationController?.navigationBar {
let firstFrame = CGRect(x: 0, y: 0, width: navigationBar.frame.width/2, height: navigationBar.frame.height)
let secondFrame = CGRect(x: navigationBar.frame.width/2, y: 0, width: navigationBar.frame.width/2, height: navigationBar.frame.height)
let firstLabel = UILabel(frame: firstFrame)
firstLabel.text = "First"
let secondLabel = UILabel(frame: secondFrame)
secondLabel.text = "Second"
navigationBar.addSubview(firstLabel)
navigationBar.addSubview(secondLabel)
}
In this way you can add as many subviews as you want to the navigation bar
Here's an implementation that uses a stack view instead, which also gives you some versatility with layout of the labels:
class ViewController: UIViewController {
lazy var titleStackView: UIStackView = {
let titleLabel = UILabel()
titleLabel.textAlignment = .center
titleLabel.text = "Title"
let subtitleLabel = UILabel()
subtitleLabel.textAlignment = .center
subtitleLabel.text = "Subtitle"
let stackView = UIStackView(arrangedSubviews: [titleLabel, subtitleLabel])
stackView.axis = .vertical
return stackView
}()
override func viewDidLoad() {
super.viewDidLoad()
navigationItem.titleView = titleStackView
}
override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
if view.traitCollection.horizontalSizeClass == .compact {
titleStackView.axis = .vertical
titleStackView.spacing = UIStackView.spacingUseDefault
} else {
titleStackView.axis = .horizontal
titleStackView.spacing = 20.0
}
}
}