if have a simple messageView in my app. on the messageView is a input-container with a textView. The textView should resize depending on its content.
It works so far, but every time while wrapping into the next line the text "jumps" for the first character, but reposition with the second character. it looks like:
the most of my code. i assume that it has something to do with the scroll capabilities of the textView(?)
private let container: UIView = {
let view = UIView()
view.backgroundColor = UIColor.white
view.layer.cornerRadius = 20
view.layer.masksToBounds = true
view.layer.borderColor = UIColor(red:0.90, green:0.90, blue:0.90, alpha:1.0).cgColor
view.layer.borderWidth = 0.5
view.translatesAutoresizingMaskIntoConstraints = false
return view
}()
private lazy var inputTV: UITextView = {
let tv = UITextView()
tv.translatesAutoresizingMaskIntoConstraints = false
tv.font = UIFont(name: "OpenSans-Light", size: 16)
tv.backgroundColor = .red
tv.delegate = self
tv.textContainer.lineBreakMode = .byWordWrapping
return tv
}()
override internal init(frame: CGRect) {
super.init(frame: CGRect.zero)
translatesAutoresizingMaskIntoConstraints = false
addSubview(container)
container.addSubview(inputTV)
container.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -16).isActive = true
container.leftAnchor.constraint(equalTo: leftAnchor , constant: 16).isActive = true
container.rightAnchor.constraint(equalTo: rightAnchor, constant: -16).isActive = true
containerHeightAnchor = container.heightAnchor.constraint(equalToConstant: 40)
containerHeightAnchor?.isActive = true
inputTV.leftAnchor.constraint(equalTo: uploadButton.rightAnchor).isActive = true
inputTV.centerYAnchor.constraint(equalTo: container.centerYAnchor).isActive = true
inputTV.rightAnchor.constraint(equalTo: sendButton.leftAnchor, constant: -5).isActive = true
textViewHeightAnchor = inputTV.heightAnchor.constraint(equalTo: container.heightAnchor)
textViewHeightAnchor?.isActive = true
}
internal func textViewDidChange(_ textView: UITextView) {
let contentHeight = textView.contentSize.height
containerHeightAnchor?.constant = max(contentHeight, 40)
inputTV.frame.size.height = contentHeight
}
I hope somebody could help. regards
thanks to #DonMag i do remove the heightAnchor from textViewand it does work for me. The new code is as following:
disable scrolling on the textView (isScrollEnabled = false)
private lazy var inputTV: UITextView = {
let tv = UITextView()
tv.translatesAutoresizingMaskIntoConstraints = false
tv.font = UIFont(name: "OpenSans-Light", size: 16)
tv.delegate = self
tv.isScrollEnabled = false
return tv
}()
remove heightAnchor (no inputTV.heightAnchor resp. my textViewHeightAnchor)
override internal init(frame: CGRect) {
super.init(frame: CGRect.zero)
translatesAutoresizingMaskIntoConstraints = false
addSubview(container)
container.addSubview(inputTV)
...
inputTV.leftAnchor.constraint(equalTo: uploadButton.rightAnchor).isActive = true
inputTV.centerYAnchor.constraint(equalTo: container.centerYAnchor).isActive = true
inputTV.rightAnchor.constraint(equalTo: sendButton.leftAnchor, constant: -5).isActive = true
}
Related
I have searched a lot about adding a gesture on UIView when it is tapped. There are many solutions but none of them worked for me.
I have made UIView class programmatically and using the view in different classes.
Here is my class of UIView:
class PaymentServiceView: UIView {
private let views: UIView = {
let view = UIView()
view.backgroundColor = .white
// view.layer.maskedCorners = [.layerMinXMinYCorner,.layerMaxXMinYCorner]
view.layer.borderColor = UIColor.gray.cgColor
view.layer.shadowOpacity = 0.3
view.layer.shadowColor = UIColor.gray.cgColor
view.layer.shadowRadius = 10
view.layer.borderWidth = 0.1
view.layer.cornerRadius = 20
view.isUserInteractionEnabled = true
view.translatesAutoresizingMaskIntoConstraints = false
return view
}()
private let titleLbl: UILabel = {
var label = UILabel()
label.translatesAutoresizingMaskIntoConstraints = false
label.textAlignment = .center
label.textColor = UIColor.black
label.font = UIFont(name: AppFontName.circularStdRegular, size: 18)
label.clipsToBounds = true
return label
}()
private let subLbl: UILabel = {
var label = UILabel()
label.translatesAutoresizingMaskIntoConstraints = false
label.textAlignment = .center
label.textColor = UIColor.gray
label.numberOfLines = 0
label.textAlignment = .left
label.font = UIFont(name: AppFontName.robotoRegular, size: 15)
label.clipsToBounds = true
return label
}()
private let image: UIImageView = {
let imageView = UIImageView()
imageView.contentMode = .scaleAspectFit
imageView.clipsToBounds = true
imageView.translatesAutoresizingMaskIntoConstraints = false
return imageView
}()
private let btnImage: UIImageView = {
let imageView = UIImageView()
imageView.contentMode = .scaleAspectFit
imageView.clipsToBounds = true
imageView.image = UIImage(named: IconName.chevron_down)?.transform(withNewColor: UIColor.btnGray)
imageView.translatesAutoresizingMaskIntoConstraints = false
return imageView
}()
init(titleLabel: String, subTitleLabel: String, imageName: String) {
super.init(frame: CGRect.zero)
self.addSubview(views)
self.views.addSubview(btnImage)
self.views.addSubview(titleLbl)
self.views.addSubview(image)
self.views.addSubview(subLbl)
titleLbl.text = titleLabel
image.image = UIImage(named: imageName)
subLbl.text = subTitleLabel
setupConstraints()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
private func setupConstraints() {
self.views.centerXAnchor.constraint(equalTo: self.centerXAnchor).isActive = true
self.views.centerYAnchor.constraint(equalTo: self.centerYAnchor).isActive = true
self.views.heightAnchor.constraint(equalToConstant: 150).isActive = true
self.views.widthAnchor.constraint(equalToConstant: 320).isActive = true
self.image.centerYAnchor.constraint(equalTo: self.views.centerYAnchor).isActive = true
self.image.leadingAnchor.constraint(equalTo: self.views.leadingAnchor, constant: 15).isActive = true
self.image.widthAnchor.constraint(equalToConstant: 30).isActive = true
self.image.heightAnchor.constraint(equalToConstant: 30).isActive = true
self.titleLbl.centerYAnchor.constraint(equalTo: self.views.centerYAnchor, constant: -35).isActive = true
self.titleLbl.leadingAnchor.constraint(equalTo: image.trailingAnchor, constant: 15).isActive = true
self.subLbl.topAnchor.constraint(equalTo: titleLbl.bottomAnchor, constant: 5).isActive = true
self.subLbl.leadingAnchor.constraint(equalTo: image.trailingAnchor, constant: 15).isActive = true
self.subLbl.trailingAnchor.constraint(equalTo: btnImage.leadingAnchor, constant: -15).isActive = true
btnImage.topAnchor.constraint(equalTo: views.topAnchor, constant: 55).isActive = true
btnImage.rightAnchor.constraint(equalTo: views.rightAnchor, constant: -10).isActive = true
btnImage.heightAnchor.constraint(equalToConstant: 10).isActive = true
}
}
Now Im using this UIView class in PaymentServicesViewController
class PaymentServicesViewController: UIViewController {
private (set) lazy var headerView: HeaderView = { [unowned self] in
let view = HeaderView.init(titleLbl: Headings.paymentService, closeAction: {
self.navigationController?.popViewController(animated: true)
}, nextAction: {
print("next")
}, previousAction: {
self.navigationController?.popViewController(animated: true)
})
view.translatesAutoresizingMaskIntoConstraints = false
return view
}()
private let fundTransferView: PaymentServiceView = {
let view = PaymentServiceView(titleLabel: Headings.fundTransfer, subTitleLabel: Description.fundTransferDecription , imageName: IconName.fundImage )
view.isUserInteractionEnabled = true
view.translatesAutoresizingMaskIntoConstraints = false
return view
}()
private let subscriptionView: PaymentServiceView = {
let view = PaymentServiceView(titleLabel: Headings.subscribe, subTitleLabel: Description.subscriptionDescription, imageName: IconName.subImage )
view.isUserInteractionEnabled = true
view.translatesAutoresizingMaskIntoConstraints = false
return view
}()
private let billPaymentView: PaymentServiceView = {
let view = PaymentServiceView(titleLabel: Headings.billPayment, subTitleLabel: Description.billPaymentDescription , imageName: IconName.billImage )
view.isUserInteractionEnabled = true
view.translatesAutoresizingMaskIntoConstraints = false
return view
}()
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .gray2
let fundtrasnferGesture = UITapGestureRecognizer(target: self, action: #selector(fundTranferTapped))
fundTransferView.isUserInteractionEnabled = true
self.fundTransferView.addGestureRecognizer(fundtrasnferGesture)
let subscribeGesture = UITapGestureRecognizer(target: self, action: #selector(subscribeTapped))
subscriptionView.isUserInteractionEnabled = true
self.subscriptionView.addGestureRecognizer(subscribeGesture)
let billPaymentGesture = UITapGestureRecognizer(target: self, action: #selector(billPaymentTapped))
fundTransferView.isUserInteractionEnabled = true
self.billPaymentView.addGestureRecognizer(billPaymentGesture)
view.addSubview(headerView)
view.addSubview(subscriptionView)
view.addSubview(fundTransferView)
view.addSubview(billPaymentView)
setupConstraint()
}
#objc func fundTranferTapped(sender: UITapGestureRecognizer) {
print("FundTransfer Tapped.")
}
#objc func subscribeTapped(sender: UITapGestureRecognizer) {
print("Subscribe Tapped.")
}
#objc func billPaymentTapped(sender: UITapGestureRecognizer) {
print("BillPayment Tapped.")
}
private func setupConstraint() {
headerView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
headerView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
headerView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
headerView.heightAnchor.constraint(equalToConstant: 100).isActive = true
subscriptionView.trailingAnchor.constraint(equalTo: fundTransferView.trailingAnchor, constant: 0).isActive = true
subscriptionView.leadingAnchor.constraint(equalTo: fundTransferView.leadingAnchor, constant: 0).isActive = true
subscriptionView.bottomAnchor.constraint(equalTo: fundTransferView.topAnchor, constant: -130).isActive = true
fundTransferView.centerXAnchor.constraint(equalTo: view.centerXAnchor, constant: 0).isActive = true
fundTransferView.centerYAnchor.constraint(equalTo: view.centerYAnchor, constant: 0).isActive = true
billPaymentView.leadingAnchor.constraint(equalTo: fundTransferView.leadingAnchor, constant: 0).isActive = true
billPaymentView.trailingAnchor.constraint(equalTo: fundTransferView.trailingAnchor).isActive = true
billPaymentView.topAnchor.constraint(equalTo: fundTransferView.bottomAnchor, constant: 130).isActive = true
}
}
I know there is a small mistake I'm doing but not sure. Help would be appreciated, Thank you.
You are missing a couple constraints...
If you add this at the end of viewDidLoad():
subscriptionView.clipsToBounds = true
fundTransferView.clipsToBounds = true
billPaymentView.clipsToBounds = true
You'll see that the views "disappear":
because they have no Width or Height constraints (so their size is .zero).
In setupConstraints() in your PaymentServiceView class, add these two lines:
self.widthAnchor.constraint(equalTo: self.views.widthAnchor).isActive = true
self.heightAnchor.constraint(equalTo: self.views.heightAnchor).isActive = true
Now, the PaymentServiceView will be the same Width and Height as self.views view.
However, now that the views have Heights:
your layout needs to be adjusted.
Change the .clipsToBounds back to false (remove those added lines) so the shadows won't be clipped, and change these constraints in your controller (adjust the 15 and -15 to your liking):
//subscriptionView.bottomAnchor.constraint(equalTo: fundTransferView.topAnchor, constant: -130).isActive = true
subscriptionView.bottomAnchor.constraint(equalTo: fundTransferView.topAnchor, constant: 15).isActive = true
//billPaymentView.topAnchor.constraint(equalTo: fundTransferView.bottomAnchor, constant: 130).isActive = true
billPaymentView.topAnchor.constraint(equalTo: fundTransferView.bottomAnchor, constant: -15).isActive = true
and we get:
Now, because the views have a size, the Tap Gestures will work.
I need help creating a Scroll View without Storyboards. Here is my code for setting up the Scroll View; I'm not setting a contentSize of the Scroll View because I'd like the scroll view content size to be dynamic, dependent on the amount of text in the TextView. What I did instead, is I tried adding a 'contentView' to the Scroll View and added all my UI elements into the contentView. Any help would be appreciated.
import Foundation
import UIKit
import UITextView_Placeholder
class ComposerVC: UIViewController {
private var scrollView: UIScrollView = {
let scrollView = UIScrollView(frame: UIScreen.main.bounds)
scrollView.translatesAutoresizingMaskIntoConstraints = false
return scrollView
}()
private var contentView: UIView = {
let content = UIView()
content.translatesAutoresizingMaskIntoConstraints = false
return content
}()
private var title: UITextView = {
let title = UITextView()
title.translatesAutoresizingMaskIntoConstraints = false
title.placeholder = "Untitled"
title.textColor = UIColor(hexString: "#50E3C2")
title.font = UIFont(name: "Rubik-BoldItalic", size: 32)
title.backgroundColor = .clear
title.isScrollEnabled = false
return title
}()
private var divider: UIView = {
let divider = UIView()
divider.translatesAutoresizingMaskIntoConstraints = false
divider.backgroundColor = UIColor(hexString: "#50E3C2")
return divider
}()
private var content: UITextView = {
let title = UITextView()
title.translatesAutoresizingMaskIntoConstraints = false
title.placeholder = "Begin writing here..."
title.textColor = .white
title.font = UIFont(name: "Avenir-Book", size: 15)
title.backgroundColor = .clear
title.isScrollEnabled = false
return title
}()
override func viewDidLoad() {
setupUI()
setupUIConstraints()
title.delegate = self
}
private func setupUI() {
view.backgroundColor = UIColor(hexString: "#131415")
view.addSubview(scrollView)
scrollView.addSubview(contentView)
contentView.addSubview(title)
contentView.addSubview(divider)
contentView.addSubview(content)
}
private func setupUIConstraints() {
scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
scrollView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
contentView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor).isActive = true
contentView.topAnchor.constraint(equalTo: scrollView.topAnchor).isActive = true
contentView.trailingAnchor.constraint(equalTo: scrollView.trailingAnchor).isActive = true
contentView.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor).isActive = true
contentView.widthAnchor.constraint(equalTo: view.widthAnchor).isActive = true
title.topAnchor.constraint(equalTo: contentView.topAnchor, constant: 95).isActive = true
title.leftAnchor.constraint(equalTo: contentView.leftAnchor, constant: 35).isActive = true
title.rightAnchor.constraint(equalTo: contentView.rightAnchor, constant: -35).isActive = true
divider.topAnchor.constraint(equalTo: title.bottomAnchor, constant: 15).isActive = true
divider.centerXAnchor.constraint(equalTo: contentView.centerXAnchor).isActive = true
divider.heightAnchor.constraint(equalToConstant: 1).isActive = true
divider.widthAnchor.constraint(equalTo: contentView.widthAnchor, multiplier: 0.8).isActive = true
content.topAnchor.constraint(equalTo: divider.bottomAnchor, constant: 15).isActive = true
content.leftAnchor.constraint(equalTo: contentView.leftAnchor, constant: 35).isActive = true
content.rightAnchor.constraint(equalTo: contentView.rightAnchor, constant: -35).isActive = true
}
}
extension ComposerVC: UITextViewDelegate {
func textViewDidChange(_ textView: UITextView) {
let fixedWidth = textView.frame.size.width
let newSize = textView.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat.greatestFiniteMagnitude))
textView.frame.size = CGSize(width: max(newSize.width, fixedWidth), height: newSize.height)
}
}
A couple tips:
Don't use existing names for variables... with your code as-is, private var title: UITextView causes problems (title is already a view controller property).
Use var names that imply the object... e.g. titleTextView and contentTextView instead of title and content
During development - particularly when you're working on layout - give your UI elements contrasting background colors so you can easily see their frames at runtime.
When using code-created views, set .clipsToBounds = true ... if you don't see any subviews you've added, you know the frame / constraints are missing something.
I don't have your UITextView_Placeholder import, but that shouldn't affect anything here...
So, first, change your viewDidLoad() to this:
override func viewDidLoad() {
setupUI()
setupUIConstraints()
titleTextView.delegate = self
// contrasting colors during development
scrollView.backgroundColor = .red
titleTextView.backgroundColor = .yellow
contentTextView.backgroundColor = .green
divider.backgroundColor = .blue
contentView.backgroundColor = .cyan
}
When you run it, you should see (scroll view background is red, and this is without the placeholder stuff):
It looks correct, except there's no cyan-colored contentView.
Now, clip the subviews of contentView:
private var contentView: UIView = {
let content = UIView()
content.translatesAutoresizingMaskIntoConstraints = false
// add this line
content.clipsToBounds = true
return content
}()
The result:
Where did everything go? Well, we didn't see the cyan contentView and now we don't see any of its subviews ... If we use Debug View Hierarchy we can find out contentView has a Height of Zero.
Fix that by constraining the bottom of the second text view in setupUIConstraints() (I've renamed it to contentTextView instead of just content):
contentTextView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: -95).isActive = true
and we get:
Now the Height of the cyan contentView is controlled by correctly setup constraints of its subviews.
As a side note: with constraints setup properly, and scrolling disabled for the text views, you do not need your:
extension ComposerVC: UITextViewDelegate {
//func textViewDidChange(_ textView: UITextView) {
//...
//}
}
The text view will automatically size itself to its text:
Here's the complete edited code:
class ComposerVC: UIViewController {
private var scrollView: UIScrollView = {
let scrollView = UIScrollView(frame: UIScreen.main.bounds)
scrollView.translatesAutoresizingMaskIntoConstraints = false
return scrollView
}()
private var contentView: UIView = {
let content = UIView()
content.translatesAutoresizingMaskIntoConstraints = false
// add this line so we know if the constraints are set correctly
content.clipsToBounds = true
return content
}()
private var titleTextView: UITextView = {
let title = UITextView()
title.translatesAutoresizingMaskIntoConstraints = false
// title.placeholder = "Untitled"
title.textColor = UIColor(hexString: "#50E3C2")
title.font = UIFont(name: "Rubik-BoldItalic", size: 32)
title.backgroundColor = .clear
title.isScrollEnabled = false
return title
}()
private var divider: UIView = {
let divider = UIView()
divider.translatesAutoresizingMaskIntoConstraints = false
divider.backgroundColor = UIColor(hexString: "#50E3C2")
return divider
}()
private var contentTextView: UITextView = {
let title = UITextView()
title.translatesAutoresizingMaskIntoConstraints = false
// title.placeholder = "Begin writing here..."
title.textColor = .white
title.font = UIFont(name: "Avenir-Book", size: 15)
title.backgroundColor = .clear
title.isScrollEnabled = false
return title
}()
override func viewDidLoad() {
setupUI()
setupUIConstraints()
titleTextView.delegate = self
// contrasting colors during development
scrollView.backgroundColor = .red
titleTextView.backgroundColor = .yellow
contentTextView.backgroundColor = .green
divider.backgroundColor = .blue
contentView.backgroundColor = .cyan
}
private func setupUI() {
view.backgroundColor = UIColor(hexString: "#131415")
view.addSubview(scrollView)
scrollView.addSubview(contentView)
contentView.addSubview(titleTextView)
contentView.addSubview(divider)
contentView.addSubview(contentTextView)
}
private func setupUIConstraints() {
scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
scrollView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
contentView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor).isActive = true
contentView.topAnchor.constraint(equalTo: scrollView.topAnchor).isActive = true
contentView.trailingAnchor.constraint(equalTo: scrollView.trailingAnchor).isActive = true
contentView.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor).isActive = true
contentView.widthAnchor.constraint(equalTo: view.widthAnchor).isActive = true
titleTextView.topAnchor.constraint(equalTo: contentView.topAnchor, constant: 95).isActive = true
titleTextView.leftAnchor.constraint(equalTo: contentView.leftAnchor, constant: 35).isActive = true
titleTextView.rightAnchor.constraint(equalTo: contentView.rightAnchor, constant: -35).isActive = true
divider.topAnchor.constraint(equalTo: titleTextView.bottomAnchor, constant: 15).isActive = true
divider.centerXAnchor.constraint(equalTo: contentView.centerXAnchor).isActive = true
divider.heightAnchor.constraint(equalToConstant: 1).isActive = true
divider.widthAnchor.constraint(equalTo: contentView.widthAnchor, multiplier: 0.8).isActive = true
contentTextView.topAnchor.constraint(equalTo: divider.bottomAnchor, constant: 15).isActive = true
contentTextView.leftAnchor.constraint(equalTo: contentView.leftAnchor, constant: 35).isActive = true
contentTextView.rightAnchor.constraint(equalTo: contentView.rightAnchor, constant: -35).isActive = true
contentTextView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: -95).isActive = true
}
}
extension ComposerVC: UITextViewDelegate {
// func textViewDidChange(_ textView: UITextView) {
// let fixedWidth = textView.frame.size.width
// let newSize = textView.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat.greatestFiniteMagnitude))
// textView.frame.size = CGSize(width: max(newSize.width, fixedWidth), height: newSize.height)
// }
}
Assuming you are using iOS 11+, Your contentView should have its anchors constrained to the contentLayoutGuide of the scrollView. like this:
contentView
.leadingAnchor
.constraint(equalTo: scrollView.contentLayoutGuide.leadingAnchor).isActive = true
contentView
.topAnchor
.constraint(equalTo: scrollView.contentLayoutGuide.topAnchor).isActive = true
contentView
.trailingAnchor
.constraint(equalTo: scrollView.contentLayoutGuide.trailingAnchor).isActive = true
contentView
.bottomAnchor
.constraint(equalTo: scrollView.contentLayoutGuide.bottomAnchor).isActive = true
Also, its width should be constrained to the scrollView's frameLayoutGuide and not the view's width, like this:
contentView
.widthAnchor
.constraint(equalTo: scrollView.frameLayoutGuide.widthAnchor).isActive = true
That should make the scrollView detect the content size to fit.
I'm following a tutorial to create an interactive popup animation (http://www.swiftkickmobile.com/building-better-app-animations-swift-uiviewpropertyanimator/), and now would like to add buttons to the popup rather than have static text as in the tutorial.
The animation works fine, but the buttons are not detecting touch. Touching the button causes the animation to reverse, instead of printing my "test" statement.
From research, it looks to either be an issue with view hierarchies, the animation disabling the button touch, or layout/constraint issues with the button. I've tried addressing the above issues, but nothing has worked, was hoping someone might be able to help?
I've left out the code pertaining to the animation since I think the issue is to do with layout (and the animation seems to be working fine) - but it's still a lot; apologies in advance for the large amount of code.
class ViewController: UIViewController {
private let popupOffset: CGFloat = 440
private lazy var contentImageView: UIImageView = {
let imageView = UIImageView()
imageView.image = #imageLiteral(resourceName: "Background")
return imageView
}()
private lazy var overlayView: UIView = {
let view = UIView()
view.backgroundColor = .black
view.alpha = 0
return view
}()
private lazy var popupView: UIView = {
let view = UIView()
view.backgroundColor = .white
view.layer.maskedCorners = [.layerMaxXMinYCorner, .layerMinXMinYCorner]
view.layer.shadowColor = UIColor.black.cgColor
view.layer.shadowOpacity = 0.1
view.layer.shadowRadius = 10
return view
}()
private lazy var closedTitleLabel: UILabel = {
let label = UILabel()
label.text = "Hello"
label.font = UIFont.systemFont(ofSize: 16, weight: UIFont.Weight.medium)
label.textColor = UIColor.darkGray
label.textAlignment = .center
return label
}()
private lazy var openTitleLabel: UILabel = {
let label = UILabel()
label.text = "Which door will you choose?"
label.font = UIFont.systemFont(ofSize: 16, weight: UIFont.Weight.medium)
label.textColor = UIColor.darkGray
label.textAlignment = .center
label.alpha = 0
label.transform = CGAffineTransform(scaleX: 1.6, y: 1.6).concatenating(CGAffineTransform(translationX: 0, y: 15))
return label
}()
private lazy var reviewsImageView: UIImageView = {
let imageView = UIImageView()
imageView.image = #imageLiteral(resourceName: "LabelBackground")
return imageView
}()
let stackView = UIStackView()
let buttonA = UIButton()
let buttonB = UIButton()
let buttonC = UIButton()
override func viewDidLoad() {
super.viewDidLoad()
layout()
popupView.addGestureRecognizer(panRecognizer)
}
override var prefersStatusBarHidden: Bool {
return true
}
//Layout
private var bottomConstraint = NSLayoutConstraint()
private func layout() {
contentImageView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(contentImageView)
contentImageView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
contentImageView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
contentImageView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
contentImageView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
overlayView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(overlayView)
overlayView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
overlayView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
overlayView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
overlayView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
popupView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(popupView)
popupView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
popupView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
bottomConstraint = popupView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: popupOffset)
bottomConstraint.isActive = true
popupView.heightAnchor.constraint(equalToConstant: 500).isActive = true
closedTitleLabel.translatesAutoresizingMaskIntoConstraints = false
popupView.addSubview(closedTitleLabel)
closedTitleLabel.leadingAnchor.constraint(equalTo: popupView.leadingAnchor).isActive = true
closedTitleLabel.trailingAnchor.constraint(equalTo: popupView.trailingAnchor).isActive = true
closedTitleLabel.topAnchor.constraint(equalTo: popupView.topAnchor, constant: 20).isActive = true
openTitleLabel.translatesAutoresizingMaskIntoConstraints = false
popupView.addSubview(openTitleLabel)
openTitleLabel.leadingAnchor.constraint(equalTo: popupView.leadingAnchor).isActive = true
openTitleLabel.trailingAnchor.constraint(equalTo: popupView.trailingAnchor).isActive = true
openTitleLabel.topAnchor.constraint(equalTo: popupView.topAnchor, constant: 20).isActive = true
reviewsImageView.translatesAutoresizingMaskIntoConstraints = false
popupView.addSubview(reviewsImageView)
reviewsImageView.leadingAnchor.constraint(equalTo: popupView.leadingAnchor).isActive = true
reviewsImageView.trailingAnchor.constraint(equalTo: popupView.trailingAnchor).isActive = true
reviewsImageView.bottomAnchor.constraint(equalTo: popupView.bottomAnchor).isActive = true
reviewsImageView.heightAnchor.constraint(equalToConstant: 428).isActive = true
buttonA.backgroundColor = UIColor.clear
let heightConstraintA = buttonA.heightAnchor.constraint(equalToConstant: 135)
heightConstraintA.isActive = true
heightConstraintA.priority = UILayoutPriority(rawValue: 999)
buttonA.translatesAutoresizingMaskIntoConstraints = false
buttonA.setTitle("A", for: .normal)
buttonA.setTitleColor(UIColor.darkGray, for: .normal)
buttonA.backgroundColor = UIColor.clear
buttonA.addTarget(self, action: #selector(buttonATapped(sender:)), for: .touchDown)
//self.popupView.addSubview(buttonA)
buttonB.backgroundColor = UIColor.clear
let heightConstraintB = buttonB.heightAnchor.constraint(equalToConstant: 135)
heightConstraintB.isActive = true
heightConstraintB.priority = UILayoutPriority(rawValue: 999)
buttonB.translatesAutoresizingMaskIntoConstraints = false
buttonB.setTitle("B", for: .normal)
buttonB.setTitleColor(UIColor.darkGray, for: .normal)
buttonB.backgroundColor = UIColor.clear
//self.popupView.addSubview(buttonB)
buttonC.backgroundColor = UIColor.clear
let heightConstraintC = buttonC.heightAnchor.constraint(equalToConstant: 135)
heightConstraintC.isActive = true
heightConstraintC.priority = UILayoutPriority(rawValue: 999)
buttonC.translatesAutoresizingMaskIntoConstraints = false
buttonC.setTitle("C", for: .normal)
buttonC.setTitleColor(UIColor.darkGray, for: .normal)
buttonC.backgroundColor = UIColor.clear
//self.popupView.addSubview(buttonC)
popupView.addSubview(stackView)
stackView.backgroundColor = UIColor.clear
stackView.addArrangedSubview(buttonA)
stackView.addArrangedSubview(buttonB)
stackView.addArrangedSubview(buttonC)
stackView.translatesAutoresizingMaskIntoConstraints = false
popupView.addSubview(stackView)
stackView.leadingAnchor.constraint(equalTo: popupView.leadingAnchor).isActive = true
stackView.trailingAnchor.constraint(equalTo: popupView.trailingAnchor).isActive = true
stackView.bottomAnchor.constraint(equalTo: popupView.bottomAnchor).isActive = true
stackView.heightAnchor.constraint(equalToConstant: 428).isActive = true
stackView.axis = .vertical
stackView.distribution = .fill
stackView.translatesAutoresizingMaskIntoConstraints = false
}
#objc func buttonATapped(sender: UIButton) {
print ("test")
}
private func animateTransitionIfNeeded(to state: State, duration: TimeInterval) {
//Animation code
}
#objc private func popupViewPanned(recognizer: UIPanGestureRecognizer) {
//Animation code
}
}
***For anyone else having the same issue, here is how I solved it, thanks to #OverD:
I removed the reviewsImageView completely (because that was only for color in my case, and I can easily add the color to the UIButton instead) Then instead of adding the buttons to the popupView, I added them to the stack view, and the stack view to the popupView. Lastly, my syntax for addTarget was not correct, and for some reason changing it to touchDown instead of touchUpInside made it work.
I noticed from the provided code that you are adding the same buttons multiple times, once as a subview of the popView and once in the stackView. Also you are not assigning any targets for the buttons.
I hope this helps
I am one week into Swift programing and I want to build my first Application with Autolayout.
The current state of my app is that I generate a bunch of PictureCell in my ViewController. Their size is based on a slider value (and also calculated in the ViewController). This works just fine.
My struggle is customizing the inside of my PictureCell. My goal is to have a Label in the cell which font size is automatically resized when I resize the cell.
At the current state I can resize the Cell and the UITextView like I want, but I cannot resize the font within the Textview because it's constant is just called when it is initialized (I guess).
How can I address this problem in a good way?
Due to a not understanding of Swifts logic I have to post the whole code of the PictureCell:
class PictureCell: UICollectionViewCell {
override init(frame: CGRect) {
super.init(frame: frame)
self.translatesAutoresizingMaskIntoConstraints = false
self.layer.cornerRadius = self.bounds.width / 20
self.clipsToBounds = true
setupViews()
}
let descriptionTextView: UITextView = {
let textView = UITextView()
textView.text = "Header"
textView.textColor = .black
textView.backgroundColor = .white
textView.translatesAutoresizingMaskIntoConstraints = false
textView.textAlignment = .center
textView.isEditable = false
textView.isScrollEnabled = false
textView.sizeToFit()
textView.font = UIFont.boldSystemFont(ofSize: textView.contentSize.height / 2) // Resize that
textView.layer.borderWidth = 2
textView.layer.borderColor = UIColor.red.cgColor
return textView
}()
var mainPicture: UIImageView = {
let imageView = UIImageView()
imageView.contentMode = .scaleAspectFill
imageView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
imageView.clipsToBounds = true
return imageView
}()
func setPictureForIndex(index: Int) {
self.mainPicture.image = UIImage(named: "color\(index)")
}
func setupViews() {
addSubview(mainPicture)
confMainPicture()
addSubview(descriptionTextView)
confDescriptionTextView()
}
func confMainPicture() {
mainPicture.translatesAutoresizingMaskIntoConstraints = false
mainPicture.widthAnchor.constraint(equalTo: self.widthAnchor).isActive = true
mainPicture.heightAnchor.constraint(equalTo: self.heightAnchor).isActive = true
mainPicture.topAnchor.constraint(equalTo: self.topAnchor).isActive = true
mainPicture.bottomAnchor.constraint(equalTo: self.bottomAnchor).isActive = true
}
func confDescriptionTextView(){
descriptionTextView.translatesAutoresizingMaskIntoConstraints = false
descriptionTextView.widthAnchor.constraint(equalTo: self.widthAnchor).isActive = true
descriptionTextView.heightAnchor.constraint(equalTo: mainPicture.heightAnchor, multiplier: 0.25).isActive = true
descriptionTextView.topAnchor.constraint(equalTo: self.topAnchor).isActive = true
}
Too small for the text
Just fine
Too big to look good
This Code solved my problem more or less:
It doesn't work properly if the Cell is really small but it's better than the starting point and maybe someone can use it.
class PictureCell: UICollectionViewCell {
override init(frame: CGRect) {
super.init(frame: frame)
self.translatesAutoresizingMaskIntoConstraints = false
self.layer.cornerRadius = self.bounds.width / 20
self.clipsToBounds = true
setupViews()
}
//MARK: -
var cellIdetifier = Int()
var mainPicture: UIImageView = {
let imageView = UIImageView()
imageView.contentMode = .scaleAspectFill
imageView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
imageView.clipsToBounds = true
imageView.layer.cornerRadius = imageView.bounds.width / 20
return imageView
}()
var descriptionBox: UIView = {
let descVie = UIView()
descVie.backgroundColor = UIColor(red: 0.1 , green: 0.1, blue: 0.1, alpha: 0.5)
descVie.layer.borderWidth = 0.5
descVie.layer.borderColor = UIColor.black.cgColor
descVie.clipsToBounds = true
descVie.layer.cornerRadius = descVie.bounds.height / 5
return descVie
}()
lazy var descLabel: UITextField = {
let label = UITextField()
label.textColor = .white
label.textAlignment = .center
label.clipsToBounds = true
label.font = UIFont.systemFont(ofSize: 15)
label.adjustsFontSizeToFitWidth = true
label.autoresizingMask = [.flexibleWidth,.flexibleHeight]
label.sizeToFit()
label.layoutIfNeeded()
label.isUserInteractionEnabled = false
return label
}()
func setPictureForIndex(index: Int, name: String) {
self.descLabel.text = name
self.mainPicture.image = UIImage(named: "color\(index)")
}
// MARK: -
// MARK: Layout
func setupViews() {
addSubview(mainPicture)
addSubview(descriptionBox)
descriptionBox.addSubview(descLabel)
confBounds()
}
func confBounds() {
mainPicture.translatesAutoresizingMaskIntoConstraints = false
mainPicture.widthAnchor.constraint(equalTo: self.widthAnchor).isActive = true
mainPicture.heightAnchor.constraint(equalTo: self.heightAnchor).isActive = true
mainPicture.topAnchor.constraint(equalTo: self.topAnchor).isActive = true
mainPicture.bottomAnchor.constraint(equalTo: self.bottomAnchor).isActive = true
descriptionBox.translatesAutoresizingMaskIntoConstraints = false
descriptionBox.widthAnchor.constraint(equalTo: self.widthAnchor).isActive = true
descriptionBox.heightAnchor.constraint(equalTo: mainPicture.heightAnchor, multiplier: 0.25).isActive = true
descriptionBox.topAnchor.constraint(equalTo: self.topAnchor).isActive = true
descriptionBox.bottomAnchor.constraint(greaterThanOrEqualTo: mainPicture.topAnchor, constant: 1)
descLabel.translatesAutoresizingMaskIntoConstraints = false
descLabel.widthAnchor.constraint(equalTo: descriptionBox.widthAnchor).isActive = true
descLabel.heightAnchor.constraint(equalTo: descriptionBox.heightAnchor).isActive = true
descLabel.bottomAnchor.constraint(equalTo: descriptionBox.bottomAnchor).isActive = true
descLabel.heightAnchor.constraint(equalTo: descriptionBox.heightAnchor).isActive = true
}
}
Let's say I am describing my own UIView, let's call it a HeaderView. I want the HeaderView to have the exact same properties, but only differ in label text. Here is how I currently have it:
private let headerView: UIView = {
let screenSize = UIScreen.main.bounds
let screenWidth = screenSize.width
let screenHeight = screenSize.height
let view = UIView()
view.backgroundColor = .white
view.heightAnchor.constraint(equalToConstant: 65).isActive = true
let label = UILabel()
label.font = UIFont.systemFont(ofSize: 30)
label.textAlignment = .left
label.textColor = .black
label.text = "Search"
view.addSubview(label)
label.translatesAutoresizingMaskIntoConstraints = false
label.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 8).isActive = true
label.centerYAnchor.constraint(equalTo: view.centerYAnchor, constant: 5).isActive = true
return view
}()
How I'd use it:
view.addSubview(headerView)
headerView.translatesAutoresizingMaskIntoConstraints = false
headerView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
headerView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
headerView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
What if I want 3 of these header views with varying text? How would I make it into a reusable programmatic view?
You can create a subclass of UIView and reuse it anywhere
class HeaderView: UIView {
let innerview = UIView()
let innerlabel = UILabel()
override init(frame: CGRect) {
super.init(frame: frame)
sharedLayout()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
sharedLayout()
}
private func sharedLayout() {
self.addSubview(innerview)
self.innerView.backgroundColor = UIColor.red
innerview.translatesAutoresizingMaskIntoConstraints = false
innerview.trailingAnchor.constraint(equalTo:self.trailingAnchor).isActive = true
innerview.leadingAnchor.constraint(equalTo: self.leadingAnchor).isActive = true
innerview.topAnchor.constraint(equalTo: self.topAnchor).isActive = true
innerview.bottomAnchor.constraint(equalTo: self.bottomAnchor).isActive = true
// configure other items here
}
}
Instead of a variable you could have a function:
func buildHeaderView(withText text: String) -> UIView {
let screenSize = UIScreen.main.bounds
let screenWidth = screenSize.width
let screenHeight = screenSize.height
let view = UIView()
view.backgroundColor = .white
view.heightAnchor.constraint(equalToConstant: 65).isActive = true
let label = UILabel()
label.font = UIFont.systemFont(ofSize: 30)
label.textAlignment = .left
label.textColor = .black
label.text = text
view.addSubview(label)
label.translatesAutoresizingMaskIntoConstraints = false
label.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 8).isActive = true
label.centerYAnchor.constraint(equalTo: view.centerYAnchor, constant: 5).isActive = true
return view
}
Now you could use this function like:
let searchHeaderView = buildHeaderView(withText: "Search")
view.addSubview(searchHeaderView)
let otherView = buildHeaderView(withText: "Other")