Swift UITextField icon position set - swift

Add Icon in UITextField using
var leftImageView = UIImageView()
leftImageView.image = leftImage
textField.leftView = leftImageView
textField.leftViewMode = UITextFieldViewMode.Always
leftImageView.frame = CGRectMake(15, 10, 15, 20)
textField.addSubview(leftImageView)
o/p for this
I found solution like remove this code from above code
textField.leftView = leftImageView
It give icon alignment proper but whenever start editing text field text on icon like this
I want o/p like this

First of all, you should definitely not add the image as a subview to the label. It's enough to set the leftView property.
textField.addSubview(leftImageView) // Delete this line
Secondly, any x or y offsets that you apply to the left view's frame are ignored. The text field will only care about the view's size. If you want to add padding around the image, one option is to use a container view and position the image view inside of it.
let leftImageView = UIImageView()
leftImageView.image = leftImage
let leftView = UIView()
leftView.addSubview(leftImageView)
leftView.frame = CGRectMake(0, 0, 30, 20)
leftImageView.frame = CGRectMake(0, 0, 15, 20)
textField.leftView = leftView
Another option would be to subclass UITextField and override leftViewRectForBounds.

Referring #hennes syntax , there are some syntax missing in swift like CGRect syntax is changed and userNameTextField.leftViewMode = .always is missing
With swift syntax this worked for me :
let leftImageView = UIImageView()
leftImageView.image = UIImage(named: "email")
let leftView = UIView()
leftView.addSubview(leftImageView)
leftView.frame = CGRect(x: 0, y: 0, width: 40, height: 40)
leftImageView.frame = CGRect(x: 10, y: 10, width: 20, height: 20)
userNameTextField.leftViewMode = .always
userNameTextField.leftView = leftView

Try this. May be help you.
var padding: Float = 20
var envelopeView: UIImageView = UIImageView(frame: CGRectMake(padding, 0, 30, 30))
envelopeView.image = UIImage.imageNamed("comment-128.png")
envelopeView.contentMode = UIViewContentModeScaleAspectFit
var viewLeft: UIView = UIView(frame: CGRectMake(padding, 0, 30, 30))
viewLeft.addSubview(envelopeView)
textField.leftView.setFrame(envelopeView.frame)
textField.leftView = viewLeft
textField.leftViewMode = UITextFieldViewModeAlways
var viewRight: UIView = UIView(frame: CGRectMake(textField.frame.size.width - (textField.frame.size.width + 30 + padding), 0, 30, 30))
viewRight.addSubview(envelopeView)
textField.rightView.setFrame(envelopeView.frame)
textField.rightView = viewRight
textField.rightViewMode = UITextFieldViewModeAlways

Swift 3.1
extension UITextField
{
enum Direction
{
case Left
case Right
}
func AddImage(direction:Direction,imageName:String,Frame:CGRect,backgroundColor:UIColor)
{
let View = UIView(frame: Frame)
View.backgroundColor = backgroundColor
let imageView = UIImageView(frame: Frame)
imageView.contentMode = .center
imageView.image = UIImage(named: imageName)
View.addSubview(imageView)
if Direction.Left == direction
{
self.leftViewMode = .always
self.leftView = View
}
else
{
self.rightViewMode = .always
self.rightView = View
}
}
}

Related

Views misplaced when setting frames

I am trying to make a view programatically, making a card with an image and some text and overlaying it with some color. I have turned off clip to bounds and added some colors to make it more visual.
So when I set
overlay.frame = self.frame
or
overlay.frame = CGRect(x: 0, y: 0, width: frame.width, height: frame.height)
the overlay should cover the entire view but it does not, why is this?
This is what is showing
This is what I want to see, but with each card having a blue layer on top
private var leftImage: UIImageView = {
let i = UIImageView(frame: .zero)
i.contentMode = .scaleAspectFill
i.image = UIImage()
return i
}()
private var topLabel: UILabel = {
let label = UILabel(frame: .zero)
label.isUserInteractionEnabled = false
label.font = UIFont.boldSystemFont(ofSize: 16.0)
label.lineBreakMode = .byWordWrapping
label.adjustsFontSizeToFitWidth = true
label.numberOfLines = 2
return label
}()
var bottomLabel: UILabel = {
let label = UILabel(frame: .zero)
label.isUserInteractionEnabled = false
label.lineBreakMode = .byWordWrapping
label.font = UIFont.systemFont(ofSize: 12.0)
label.numberOfLines = 1
label.text = "60 seconds"
return label
}()
private var stackView: UIStackView = {
let stack = UIStackView(frame: .zero)
stack.axis = .vertical
stack.isUserInteractionEnabled = false
stack.distribution = .fillEqually
stack.layoutMargins = UIEdgeInsets(top: 5, left: 5, bottom: 5, right: 5)
stack.isLayoutMarginsRelativeArrangement = true
return stack
}()
private var overlay: UIView = {
let view = UIView(frame: .zero)
view.backgroundColor = .blue
view.alpha = 0.8
//view.isHidden = true
return view
}()
override init(frame: CGRect) {
super.init(frame: frame)
create()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
create()
}
private func create() {
self.translatesAutoresizingMaskIntoConstraints = false
//leftview
leftImage.frame = CGRect(x: 0, y: 0, width: frame.width / 2, height: frame.height)
addSubview(leftImage)
//rightVIew
stackView.frame = CGRect(x: frame.midX, y: 0, width: frame.width / 2, height: frame.height)
clipsToBounds = false
//add views to stack
stackView.addArrangedSubview(topLabel)
stackView.addArrangedSubview(bottomLabel)
addSubview(stackView)
overlay.frame = CGRect(x: 0, y: 0, width: frame.width, height: frame.height)
addSubview(overlay)
//card styling
layer.cornerRadius = 10
}
overlay.frame = self.frame
That can never be right, except by accident, because the frame of overlay and the frame of self are in two different coordinate systems. At the very least you want to say
overlay.frame = self.bounds // bounds, not frame
However, that isn't going to work either unless you say it in the right place. The right place is when layout occurs:
override func layoutSubviews() {
super.layoutSubviews()
self.overlay.frame = self.bounds
}
Simply adding that to your existing code should solve the problem.
The issue is that you're setting your overlay's dimensions like so:
overlay.frame = CGRect(x: 0, y: 0, width: frame.width, height: frame.height)
before the superview has determined its final width and height. You'll need to do one of the following:
Call create() after the superview class has determined its final size
Continuously set the overlay's frame as the superview's width and height changes (see https://developer.apple.com/documentation/uikit/uiview/1622482-layoutsubviews)
Use AutoLayout constraints via a xib/storyboard file

How center a Navigation Bar Image [Swift]

in my project I have a Navigation Bar with a Button to open a slide menu.
Now I am trying to set a title image instead of the title string. Unlikely the image is pushed slightly to the right instead of being centered. I thought its because of the slide menu button in the left corner of my navigation bar. If I set a title in main.storyboard everything look properly. Why is it so, that my image won't be centered.
Image function:
func addNavBarImage() {
let navController = navigationController!
let image = UIImage(named: "TransparentLogo")
let imageView = UIImageView(image: image)
let bannerWidth = navController.navigationBar.frame.size.width
let bannerHeight = navController.navigationBar.frame.size.height
let bannerX = bannerWidth - image!.size.width
let bannerY = bannerHeight - image!.size.height
imageView.frame = CGRect(x: bannerX, y: bannerY, width: bannerWidth, height: bannerHeight)
imageView.contentMode = .scaleAspectFit
navigationItem.titleView = imageView
}
Button function:
func addSlideMenuButton(){
let btnShowMenu = UIButton(type: UIButton.ButtonType.system)
btnShowMenu.setImage(self.defaultMenuImage(), for: UIControl.State())
btnShowMenu.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
btnShowMenu.addTarget(self, action: #selector(BaseViewController.onSlideMenuButtonPressed(_:)), for: UIControl.Event.touchUpInside)
btnShowMenu.tintColor = UIColor(red: 3, green: 49, blue: 79)
let customBarItem = UIBarButtonItem(customView: btnShowMenu)
self.navigationItem.leftBarButtonItem = customBarItem;
}
Change the frame of your titleView in func addNavBarImage() like this:-
func addNavBarImage() {
let navController = navigationController!
let image = UIImage(named: "TransparentLogo")
let imageView = UIImageView(image: image)
let bannerWidth = navController.navigationBar.frame.size.width
let bannerHeight = navController.navigationBar.frame.size.height
let bannerX = bannerWidth - image!.size.width
let bannerY = bannerHeight - image!.size.height
imageView.frame = CGRect(x: bannerX, y: bannerY, width: bannerWidth, height: bannerHeight)
imageView.contentMode = .scaleAspectFit
navigationItem.titleView = imageView
}
to this
func addNavBarImage() {
let imageView = UIImageView(image: #imageLiteral(resourceName: "TransparentLogo"))
imageView.frame = CGRect(x: 0, y: 0, width: 170, height: 30)
imageView.contentMode = .scaleAspectFit
let titleView = UIView(frame: CGRect(x: 0, y: 0, width: 170, height: 30))
titleView.addSubview(imageView)
titleView.backgroundColor = .clear
self.navigationItem.titleView = titleView
}
func centeredNavBarImageView() {
if let navcontroller = navigationController {
let image = #imageLiteral(resourceName: "logo")
let imageView = UIImageView(image: image)
let bannerWidth = navcontroller.navigationItem.accessibilityFrame.size.width
let bannerHeight = navcontroller.navigationBar.frame.size.height
let bannerX = bannerWidth / 2 - image.size.width / 2
let bannerY = bannerHeight / 2 - image.size.height / 2
imageView.frame = CGRect(x: bannerX, y: bannerY, width: bannerWidth, height: bannerHeight)
imageView.contentMode = .scaleAspectFit
self.navigationItem.titleView = imageView
}

Add label in center of imageView

I have the two images like in the picture at the end of the question (the image of a list and a red dot). I want to add a label in the center of the red dot. This is my code that doesn't work:
image = UIImageView(image: UIImage(named: "pallino"))
image.frame = CGRect(x: 55, y: self.view.frame.height-60, width: 22, height: 22)
self.view.addSubview(image)
image.layer.cornerRadius = image.frame.width/2
label = UILabel(frame: CGRect(x: self.image.center.x, y: self.image.center.y, width: image.frame.size.width, height: image.frame.size.height))
label.text = "4"
label.font = UIFont(name:"HelveticaNeue-Bold", size: 15.0)
label.translatesAutoresizingMaskIntoConstraints = false
label.textColor = UIColor.black
image.addSubview(label)
Can someone tell me were am I wrong?
Problem in this line:
label = UILabel(frame: CGRect(x: self.image.center.x, y: self.image.center.y, width: image.frame.size.width, height: image.frame.size.height))
self.image.center.x - The center point is specified in points in the coordinate system of its superview, it is mean that self.image.center is not center of image
You need frame for label, something like this:
let imageSize = 22
let frame = CGRect(x: 0, y: 0, width: imageSize, height: imageSize)
let label = UILabel(frame: frame)
label.aligment = .center
You can set constraint in your label(centered Horizontally and Vertically). Try with the following code.
let label = UILabel()
label.text = "4"
label.font = UIFont(name:"HelveticaNeue-Bold", size: 15.0)
label.translatesAutoresizingMaskIntoConstraints = false
label.textColor = UIColor.black
image.addSubview(label)
label.centerXAnchor.constraint(equalTo: self.image.centerXAnchor).isActive = true
label.centerYAnchor.constraint(equalTo: self.image.centerYAnchor).isActive = true
To center the label in UIImageView you can refer to this example which is tested and working solution.
extension UIImageView {
/// Create label programmatically
/// - Returns: UILabel
private func ageSensitiveLabel() -> UILabel {
let label = UILabel(frame: CGRect(x: 0, y: 0, width: self.bounds.width, height: self.bounds.height))
label.text = "Content"
label.font = .systemFont(ofSize: 5.0)
label.textAlignment = .center
label.numberOfLines = 0
label.minimumScaleFactor = 0.5
label.adjustsFontSizeToFitWidth = true
label.baselineAdjustment = .alignCenters
label.textColor = .white
return label
}
/// Add label as subview to UIImageView
func addAgeSensitiveLabel() {
self.subviews.forEach { view in
DispatchQueue.main.async {
view.removeFromSuperview()
}
}
self.addSubview(ageSensitiveLabel())
}
}
Use it with UIImageView
imageView.addAgeSensitiveLabel()

Swift: SegmentedControl in NavBar with Small TitleView

I am attempting to include a segmentedControl on my navBar that looks like this:
The idea here is that the text "fetching..." is a small titleView. However, my current implementation would result in the text "fetching..." on the lower side like so:
I implement large titles so that I can get two "rows" on the navBar, else the word "fetching..." will be hidden behind the segmentedControl.
Code:
let segmentedControl: UISegmentedControl = {
let items = ["Now","In 15 mins", "In 1 hour"]
let sc = UISegmentedControl(items: items)
sc.selectedSegmentIndex = 0
return sc
}()
override func viewDidLoad() {
super.viewDidLoad()
navigationItem.backBarButtonItem?.title = "Back"
navigationItem.largeTitleDisplayMode = .automatic
navigationItem.titleView = segmentedControl
}
Does anyone have any advice?
You can create a customView that holds all the views you want to show in the navigation bar and set that view as titleView like below,
let segmentedControl: UISegmentedControl = {
let items = ["Now","In 15 mins", "In 1 hour"]
let sc = UISegmentedControl(items: items)
sc.selectedSegmentIndex = 0
return sc
}()
let fetchingLabel: UILabel = {
let label = UILabel(frame: .zero)
label.text = "Fetching..."
return label
}()
In viewDidLoad
let customView = UIView(frame: CGRect(x: 0, y: 0, width: self.view.frame.width, height: 250))
customView.addSubview(segmentedControl)
customView.addSubview(fetchingLabel)
fetchingLabel.frame = CGRect(x: 150, y: 0, width: self.view.frame.width, height: 60)
segmentedControl.frame = CGRect(x: 60, y: 50, width: self.view.frame.width * 0.75, height: 30)
navigationController?.navigationBar.prefersLargeTitles = true
navigationItem.largeTitleDisplayMode = .automatic
navigationItem.titleView = customView
This should give you below result. You can play with the values to do what you want.

Logo in Navigation Bar Swift not showing

I'm trying to add a logo to my page's navigation bar, however it doesn't appear when I added this code to my viewDidLoad():
let logo = UIImage(named: "Dog_Log_Icon_H_W")
let imageView = UIImageView(image:logo)
self.navigationItem.titleView = imageView
Does anybody know why this might not be working? I checked that the image name is correct. This is my storyboard if it helps:
So it worked when I made an outlet,
#IBOutlet weak var navItem: UINavigationItem!
then put the following code in my viewDidAppear:
let logo = UIImage(named: "Dog_Log_Icon_4"){
let imageView = UIImageView(image:logo)
imageView.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
navItem.titleView = imageView
not sure why I had to do that..
The reason is because you forgot set the position for the imageView.
You can change your code like this:
let logo = UIImage(named: "Dog_Log_Icon_H_W")
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 30, height: 30)
imageView.image = logo
self.navigationItem.titleView = imageView
You have not set the frame of the image view. I have set frame of the image view and it works fine.
if let logo = UIImage(named: "download"){
let imageView = UIImageView(image:logo)
imageView.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
self.navigationItem.titleView = imageView
}else{
print("Image not found...")
}