Can I resize just the image of an imageView? - ios

So I have this code:
override func viewDidLoad() {
super.viewDidLoad()
let imageView = UIImageView()
view.addSubview(imageView)
imageView.translatesAutoresizingMaskIntoConstraints = false
imageView.layer.borderWidth = 5
imageView.layer.borderColor = UIColor.green.cgColor
NSLayoutConstraint.activate([
imageView.heightAnchor.constraint(equalToConstant: 200),
imageView.widthAnchor.constraint(equalToConstant: 200),
imageView.centerYAnchor.constraint(equalTo: view.centerYAnchor, constant: 0),
imageView.centerXAnchor.constraint(equalTo: view.centerXAnchor, constant: 0),
])
let image = UIImage(named: "3")
//let image = UIImage(named: "3")?.resizeImageWith(newSize: CGSize(width: 5,height: 5))
imageView.image = image
}
That looks like this:
Im trying to resize just the image ( so like from the green border there is a margin) with this extension:
func resizeImageWith(newSize: CGSize) -> UIImage {
let horizontalRatio = newSize.width / size.width
let verticalRatio = newSize.height / size.height
let ratio = min(horizontalRatio, verticalRatio)
let newSize = CGSize(width: size.width * ratio, height: size.height * ratio)
UIGraphicsBeginImageContextWithOptions(newSize, false, 0)
draw(in: CGRect(origin: CGPoint(x: 0, y: 0), size: newSize))
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage!
}
But when I use that like this:
let image = UIImage(named: "3")?.resizeImageWith(newSize: CGSize(width: 60,height: 60))
I get the following result:
And same with this:
let image = UIImage(named: "3")?.resizeImageWith(newSize: CGSize(width: 5,height: 5))
The image just get worst.
Is it possible to just resize the image in order to have a margin from the imageView? Thank you!

Change the image view content mode to Center:
imageView.contentMode = .center

I was able to produce what you wanted, but doing away with constraints. Using a container view that holds the imageView as a subview, you can use the container like a frame and set its border width and color.
With the frame in place, you can then resize the image as per your needs by just setting the frame of the imageView. The last 2 lines of the code are commented out, but if you uncomment them, you will see that the image will shrink to fit the new imageView frame size set to (50, 50).
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let containerView = UIView()
containerView.layer.borderWidth = 5
containerView.layer.borderColor = UIColor.green.cgColor
containerView.frame = CGRect(x: 0, y: 0, width: 200, height: 200)
containerView.center = view.center
let imageView = UIImageView()
view.addSubview(containerView)
containerView.addSubview(imageView)
let image = UIImage(named: "3")!
imageView.frame = CGRect(origin: imageView.frame.origin, size: CGSize(width: 200, height: 200))
imageView.image = image
imageView.contentMode = .scaleAspectFit
imageView.center = view.convert(containerView.center, to: containerView)
print("Image Width: \(image.size.width)")
print("Image Height: \(image.size.height)")
print("ImageView Width: \(imageView.frame.width)")
print("ImageView Height: \(imageView.frame.height)")
print("Container Width: \(containerView.frame.width)")
print("Container Height: \(containerView.frame.height)")
print("View Center: \(view.center.x),\(view.center.y)")
print("Container Center: \(containerView.center.x),\(containerView.center.y)")
//imageView.frame.size = CGSize(width: 50, height: 50)
//imageView.center = view.convert(containerView.center, to: containerView)
}
}
I used .scaleAspectFit so that the image will be forced to fit whatever size you set the imageView to, while maintaining its original aspect ratio. You can of course change this to suit your needs as well. If you need to set the size of your image in different ways, you'll need to change the imageView's contentMode property as appropriate. More info here:
https://developer.apple.com/documentation/uikit/uiimageview
The convert function just helps to layout the imageView where you want it, within its parent view.
The print debug statements are helpful for checking your layout, but of course, unnecessary.

Related

How to get circle imageView in as titleView of navigation bar iOS

I am trying to get a navigation bar similar to the one in iOS messages app. This is what I have, and it creates a bit of a circle shape but gets cut off. If you were to recreate the centered image from Messages how would you?
let imageView = UIImageView(image: UIImage(named: "test-image"))
imageView.contentMode = .scaleAspectFit
let titleView = UIView(frame: CGRect(x: 0, y: 0, width: 44, height: 44))
imageView.frame = titleView.bounds
imageView.layer.masksToBounds = true
imageView.layer.cornerRadius = imageView.frame.height / 2
titleView.addSubview(imageView)
self.navigationItem.titleView = titleView
The current outcome with this snippet:
The desired outcome:
Tested solutions In dark mode:
Please excuse my eggs ;) It's my favorite test pic
Set image view content mode .scaleAspectFill
imageView.contentMode = .scaleAspectFill
The following is what I have done.
I use two functions to work with an image. The makeCutout function creates a square cutout based on the height of an image of your selection. The position of the cutout is placed at the center of the source image. (See let cutoutRect = ...) The second one, the makeCircularImage function, makes the cutout image circular. Note that I'm assuming the original image is horizontally-long, which means that the diameter of the cutout will be the height of the image.
import UIKit
class ViewController: UIViewController {
// MARK: - Life cycle
override func viewDidLoad() {
super.viewDidLoad()
if let image = UIImage(named: "jenniferGarner.jpg") {
let imageWidth = image.size.width
let imageHeight = image.size.height
let cutoutRect = CGRect(origin: CGPoint(x: (imageWidth - imageHeight) / 2.0, y: 0.0), size: CGSize(width: imageHeight, height: imageHeight))
if let cutoutImage = makeCutout(image: image, rect: cutoutRect) {
/* making it a circular image */
if let circleImage = makeCircularImage(sourceImage: cutoutImage, diameter: cutoutImage.size.height) {
testImageView.isHidden = true
let imageView = UIImageView(image: circleImage)
imageView.contentMode = .scaleAspectFit
let titleView = UIView(frame: CGRect(x: 0, y: 0, width: 44, height: 44))
//titleView.backgroundColor = UIColor.green
imageView.frame = titleView.bounds
imageView.layer.masksToBounds = true
imageView.layer.cornerRadius = imageView.frame.height / 2
titleView.addSubview(imageView)
self.navigationItem.titleView = titleView
}
}
}
}
// MARK: - Making a cutout image
func makeCutout(image: UIImage, rect: CGRect) -> UIImage? {
if let cgImage = image.cgImage {
let contextImage: UIImage = UIImage(cgImage: cgImage)
// Create bitmap image from context using the rect
var croppedContextImage: CGImage? = nil
if let contextImage = contextImage.cgImage {
if let croppedImage = contextImage.cropping(to: rect) {
croppedContextImage = croppedImage
}
}
// Create a new image based on the imageRef and rotate back to the original orientation
if let croppedImage: CGImage = croppedContextImage {
let image: UIImage = UIImage(cgImage: croppedImage, scale: image.scale, orientation: image.imageOrientation)
return image
}
}
return nil
}
func makeCircularImage(sourceImage: UIImage, diameter: CGFloat) -> UIImage? {
let imageView = UIImageView(image: sourceImage)
let layer = imageView.layer
layer.masksToBounds = true
layer.cornerRadius = diameter / 2.0
UIGraphicsBeginImageContext(imageView.bounds.size)
layer.render(in: UIGraphicsGetCurrentContext()!)
if let finalImage = UIGraphicsGetImageFromCurrentImageContext() {
UIGraphicsEndImageContext()
return finalImage
}
return nil
}
}
I have Jeniffer Garner as a guest as shown below. The source image size is 480 px X 180 px.
The following is the final work with an iPhone simulator with the dark mode.

Image size error while rendering UIView to UIImage

I would like to convert two images into one image with custom design.
The expected image is a snapshot of my UICollectionViewCell, not a UIImage actually.
I copied the layout codes from my custom UICVCell.swift file and tried to render the view into UIImage, but the result image is what you can see below.
I searched through a lot of questions in SOF, but most of it was about 'How you can render a UIView into a UIImage.'
I've tried drawing too, but had the same messed up result.
Can anybody tell me what's the problem?
I would really appreciate your help, it's my first question in SOF.
I might cry in a minute or two, literally...
class ViewController: UIViewController {
private var imageView: UIImageView = {
let iv = UIImageView()
iv.contentMode = .scaleAspectFit
iv.clipsToBounds = true
return iv
}()
func createBubbleImage(images: [UIImage?]) -> UIImage? {
switch images.count {
case 1:
return images[0]
case 2:
let newView = UIView(frame: .init(x: 0, y: 0, width: 300, height: 300))
let size = newView.frame.width
let iv0 = UIImageView(image: images[0])
iv0.contentMode = .scaleAspectFit
iv0.clipsToBounds = true
let iv1 = UIImageView(image: images[1])
iv1.contentMode = .scaleAspectFit
iv1.clipsToBounds = true
newView.addSubview(iv0)
iv0.anchor(top: newView.topAnchor, left: newView.leftAnchor, paddingTop: size * 0.04, paddingLeft: size * 0.04, width: size * 0.56, height: size * 0.56)
newView.addSubview(iv1)
iv1.anchor(bottom: newView.bottomAnchor, right: newView.rightAnchor, paddingBottom: size * 0.04, paddingRight: size * 0.04, width: size * 0.56, height: size * 0.56)
iv0.layer.cornerRadius = size * 0.28
iv1.layer.cornerRadius = size * 0.28
let renderer = UIGraphicsImageRenderer(bounds: newView.bounds)
return renderer.image { ctx in
newView.layer.render(in: ctx.cgContext)
}
default:
return UIImage(named: "logo")
}
}
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .white
view.addSubview(imageView)
imageView.center(inView: view)
imageView.setDimensions(width: 300, height: 300)
imageView.image = createBubbleImage(images: [UIImage(named: "0"), UIImage(named: "1")])
}
}
Expected Image
Result Image
Do the following:
Remove the code lines that have the anchor method.
Initiate the iv0 and iv1 with UIImageView(frame: ...)
Add iv0.image = images[0] and iv1.image = images[1]
I also increased the radius a little bit because in my test device the images were not completely circular.
The code should look like this:
func createBubbleImage(images: [UIImage?]) -> UIImage? {
switch images.count {
case 1:
return images[0]
case 2:
let newView = UIView(frame: .init(x: 0, y: 0, width: 300, height: 300))
let size = newView.frame.width
let iv0 = UIImageView(frame: .init(x: 0, y: 0, width: 200, height: 200))
iv0.image = images[0]
iv0.contentMode = .scaleAspectFit
iv0.clipsToBounds = true
let iv1 = UIImageView(frame: .init(x: 100, y: 100, width: 200, height: 200))
iv1.image = images[1]
iv1.contentMode = .scaleAspectFit
iv1.clipsToBounds = true
newView.addSubview(iv0)
newView.addSubview(iv1)
iv0.layer.cornerRadius = size * 0.35
iv1.layer.cornerRadius = size * 0.35
let renderer = UIGraphicsImageRenderer(bounds: newView.bounds)
return renderer.image { ctx in
newView.layer.render(in: ctx.cgContext)
}
default:
return UIImage(named: "logo")
}
}
With it, the result is the following:
I had to take a screenshot from your "expected image", that's why the images look like zoomed in. You can play with the UIImageView(frame: ...) part to adjust the two images as you want (I didn't played enough to avoid that cut in the edges, but it is possible with the right measures).
Remark: the x and y values in the UIImageView frame are the horizontal and vertical distances from the top-left corner of newView to the top-left corner of your UIImageView, respectively.

UIBarButtonItem custom view aspect fill swift 4

I'm developing an app that displays, in the main ViewController, the user's profile image inside a round UIBarButtonItem, so I'm using a custom Button with cornerRadius and clipsToBounds enabled, I am resizing the UIImage's width to 75% of NavigationBar's height to fit well in it, I also used button.imageView?.contentMode = .scaleAspectFill
When I use a squared image(width = height) it works perfect, but if I use a portrait or landscape image it looks like if BarButton was using .scaleAspectFit
I already tried to create first a squared UIImage cropping original profile image without any luck.
This is my Bar button code:
func setProfileButton() {
let width = self.navigationController!.navigationBar.frame.size.height * 0.75
if let image = ResizeImage(CFUser.current!.getProfileImage(), to: width) {
let button = UIButton(type: .custom)
button.setImage(image, for: .normal)
button.imageView?.contentMode = .scaleAspectFill
button.addTarget(self, action: #selector(goProfile), for: .touchUpInside)
button.frame = CGRect(x: 0, y: 0, width: width, height: width)
button.layer.cornerRadius = button.bounds.width / 2
button.clipsToBounds = true
let barButton = UIBarButtonItem(customView: button)
self.navigationItem.rightBarButtonItem = barButton
}
}
This is ResizeImage code:
func ResizeImage(_ image: UIImage, to width: CGFloat) -> UIImage? {
let size = image.size
let ratio = width / image.size.width
let height = image.size.height * ratio
let targetSize = CGSize(width: width, height: height)
let widthRatio = targetSize.width / image.size.width
let heightRatio = targetSize.height / image.size.height
var newSize: CGSize
if(widthRatio > heightRatio) {
newSize = CGSize(width: size.width * heightRatio,height: size.height * heightRatio)
} else {
newSize = CGSize(width: size.width * widthRatio, height: size.height * widthRatio)
}
let rect = CGRect(x: 0, y: 0, width: newSize.width, height: newSize.height)
UIGraphicsBeginImageContextWithOptions(newSize, false, 1.0)
image.draw(in: rect)
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage
}
Here is the app working with squared image
And this is with a portrait image
Thanks for your help! :)
PD: I'm using Xcode 10 and Swift 4
As the portrait image has different dimensions unlike square image, calculate the minimum dimension and modify the image size accordingly.
Replace method ResizeImage(_ image: UIImage, to width: CGFloat) -> UIImage? with below.
func ResizeImage(_ image: UIImage, to width: CGFloat) -> UIImage? {
let ratio = width / image.size.width
let height = image.size.height * ratio
let dimension = min(width, height)
let targetSize = CGSize(width: dimension, height: dimension)
let rect = CGRect(x: 0, y: 0, width: targetSize.width, height: targetSize.height)
UIGraphicsBeginImageContextWithOptions(targetSize, false, 1.0)
image.draw(in: rect)
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage
}
Square image:
Portrait image:

Set frame CGReact x position in middle like centerXAnchor NSLayoutConstraint programmatically

I am creating a simple app which set image as circle by calculate with frame of image.
Here is I declare image variable:
lazy var imageUserDetailProfileView: UIImageView = {
let imageView = UIImageView()
imageView.contentMode = .scaleAspectFill
imageView.layer.borderWidth = 1
imageView.image = UIImage(named: "profile-icon")
imageView.layer.borderColor = UIColor(red:0.00, green:0.50, blue:0.00, alpha:1.0).cgColor
imageView.clipsToBounds = true
return imageView
}()
Here is i made that frame width and height of image became circle
imageUserDetailProfileView.frame = CGRect(x: view.frame.midX, y: 20,width: 100, height: 100)
imageUserDetailProfileView.layer.cornerRadius = imageUserDetailProfileView.frame.height/2
Now i want image should stay in middle of screen like using NSLayoutConstraint which has method centerXAnchor.
How to solve this problem?
let midX = view.frame.size.width / 2
let midY = view.frame.size.height / 2
Try This Code.
Custom Method For Image Set In Center Of Any View. Just Call Method And Pass Image & View. Customize according to Use. Swift 4
func setImageInCenterOfView(image:UIImage,view:UIView) {
let imageWidth:CGFloat = 100
let myImageView = UIImageView.init(frame: CGRect.init(x: (view.frame.size.width/2)-imageWidth/2, y: (view.frame.size.height/2)-imageWidth/2, width: imageWidth, height: imageWidth))
myImageView.clipsToBounds = true
myImageView.layer.cornerRadius = myImageView.frame.size.height/2
myImageView.image = image
view.addSubview(myImageView)
view.layoutIfNeeded()
}

Navigation bar with UIImage for title

I want to customize my app's look by using a logo image as the navigation bar's title, instead of plain text. When I use this code
let logo = UIImage(named: "logo.png")
self.navigationItem.titleView = logo;
I get the error "UIImage is not convertible to UIView". How can I do this correctly?
Put it inside an UIImageView
let logo = UIImage(named: "logo.png")
let imageView = UIImageView(image:logo)
self.navigationItem.titleView = imageView
I use this. It works in iOS 8
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let image = UIImage(named: "YOURIMAGE")
navigationItem.titleView = UIImageView(image: image)
}
And here is an example how you can do it with CGRect.
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 38, height: 38))
imageView.contentMode = .ScaleAspectFit
let image = UIImage(named: "YOURIMAGE")
imageView.image = image
navigationItem.titleView = imageView
}
Hope this will help.
For swift 4 and you can adjust imageView size
let logoContainer = UIView(frame: CGRect(x: 0, y: 0, width: 270, height: 30))
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 270, height: 30))
imageView.contentMode = .scaleAspectFit
let image = UIImage(named: "your_image")
imageView.image = image
logoContainer.addSubview(imageView)
navigationItem.titleView = logoContainer
I tried #Jack's answer above, the logo did appear however the image occupied the whole Navigation Bar. I wanted it to fit.
Swift 4, Xcode 9.2
1.Assign value to navigation controller, UIImage. Adjust size by dividing frame and Image size.
func addNavBarImage() {
let navController = navigationController!
let image = UIImage(named: "logo-signIn6.png") //Your logo url here
let imageView = UIImageView(image: image)
let bannerWidth = navController.navigationBar.frame.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
navigationItem.titleView = imageView
}
Add the function right under viewDidLoad()
addNavBarImage()
Note on the image asset. Before uploading, I adjusted the logo with extra margins rather than cropped at the edges.
Final result:
You can use custom UINavigationItem so, you only need to change "Navigation Item" as YourCustomClass on the Main.storyboard.
In Swift 3
class FixedImageNavigationItem: UINavigationItem {
private let fixedImage : UIImage = UIImage(named: "your-header-logo.png")!
private let imageView : UIImageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 50, height: 37.5))
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
imageView.contentMode = .scaleAspectFit
imageView.image = fixedImage
self.titleView = imageView
}
}
Here is a handy function for Swift 4.2, shows an image with title text:-
override func viewDidLoad() {
super.viewDidLoad()
//Sets the navigation title with text and image
self.navigationItem.titleView = navTitleWithImageAndText(titleText: "Dean Stanley", imageName: "online")
}
func navTitleWithImageAndText(titleText: String, imageName: String) -> UIView {
// Creates a new UIView
let titleView = UIView()
// Creates a new text label
let label = UILabel()
label.text = titleText
label.sizeToFit()
label.center = titleView.center
label.textAlignment = NSTextAlignment.center
// Creates the image view
let image = UIImageView()
image.image = UIImage(named: imageName)
// Maintains the image's aspect ratio:
let imageAspect = image.image!.size.width / image.image!.size.height
// Sets the image frame so that it's immediately before the text:
let imageX = label.frame.origin.x - label.frame.size.height * imageAspect
let imageY = label.frame.origin.y
let imageWidth = label.frame.size.height * imageAspect
let imageHeight = label.frame.size.height
image.frame = CGRect(x: imageX, y: imageY, width: imageWidth, height: imageHeight)
image.contentMode = UIView.ContentMode.scaleAspectFit
// Adds both the label and image view to the titleView
titleView.addSubview(label)
titleView.addSubview(image)
// Sets the titleView frame to fit within the UINavigation Title
titleView.sizeToFit()
return titleView
}
this worked for me in Sept 2015 - Hope this helps someone out there.
// 1
var nav = self.navigationController?.navigationBar
// 2 set the style
nav?.barStyle = UIBarStyle.Black
nav?.tintColor = UIColor.yellowColor()
// 3
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 40, height: 40))
imageView.contentMode = .ScaleAspectFit
// 4
let image = UIImage(named: "logo.png")
imageView.image = image
// 5
navigationItem.titleView = imageView
I have written this for iOS 10 & iOS 11 and it worked for me:
extension UINavigationBar {
func setupNavigationBar() {
let titleImageWidth = frame.size.width * 0.32
let titleImageHeight = frame.size.height * 0.64
var navigationBarIconimageView = UIImageView()
if #available(iOS 11.0, *) {
navigationBarIconimageView.widthAnchor.constraint(equalToConstant: titleImageWidth).isActive = true
navigationBarIconimageView.heightAnchor.constraint(equalToConstant: titleImageHeight).isActive = true
} else {
navigationBarIconimageView = UIImageView(frame: CGRect(x: 0, y: 0, width: titleImageWidth, height: titleImageHeight))
}
navigationBarIconimageView.contentMode = .scaleAspectFit
navigationBarIconimageView.image = UIImage(named: "image")
topItem?.titleView = navigationBarIconimageView
}
}
Swift 5.1+, Xcode 13+
Sometimes if your image is in high resolution then, imageView shifts from centre, I would suggest using this method
lazy var navigationTitleImageView = UIImageView()
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationTitleImageView.image = logo
self.navigationTitleImageView.contentMode = .scaleAspectFit
self.navigationTitleImageView.translatesAutoresizingMaskIntoConstraints = false
if let navC = self.navigationController{
navC.navigationBar.addSubview(self.navigationTitleImageView)
self.navigationTitleImageView.centerXAnchor.constraint(equalTo: navC.navigationBar.centerXAnchor).isActive = true
self.navigationTitleImageView.centerYAnchor.constraint(equalTo: navC.navigationBar.centerYAnchor, constant: 0).isActive = true
self.navigationTitleImageView.widthAnchor.constraint(equalTo: navC.navigationBar.widthAnchor, multiplier: 0.2).isActive = true
self.navigationTitleImageView.heightAnchor.constraint(equalTo: navC.navigationBar.widthAnchor, multiplier: 0.088).isActive = true
}
}
and viewWillDisappear()
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationTitleImageView.removeFromSuperview()
}
or else just reduce the image size
If you'd prefer to use autolayout, and want a permanent fixed image in the navigation bar, that doesn't animate in with each screen, this solution works well:
class CustomTitleNavigationController: UINavigationController {
override func viewDidLoad() {
super.viewDidLoad()
let logo = UIImage(named: "MyHeaderImage")
let imageView = UIImageView(image:logo)
imageView.contentMode = .scaleAspectFit
imageView.translatesAutoresizingMaskIntoConstraints = false
navigationBar.addSubview(imageView)
navigationBar.addConstraint (navigationBar.leftAnchor.constraint(equalTo: imageView.leftAnchor, constant: 0))
navigationBar.addConstraint (navigationBar.rightAnchor.constraint(equalTo: imageView.rightAnchor, constant: 0))
navigationBar.addConstraint (navigationBar.topAnchor.constraint(equalTo: imageView.topAnchor, constant: 0))
navigationBar.addConstraint (navigationBar.bottomAnchor.constraint(equalTo: imageView.bottomAnchor, constant: 0))
}
Programmatically could be done like this.
private var imageView: UIView {
let bannerWidth = navigationBar.frame.size.width * 0.5 // 0.5 its multiplier to get correct image width
let bannerHeight = navigationBar.frame.size.height
let view = UIView()
view.backgroundColor = .clear
view.frame = CGRect(x: 0, y: 0, width: bannerWidth, height: bannerHeight)
let image = UIImage(named: "your_image_name")
let imageView = UIImageView(image: image)
imageView.contentMode = .scaleAspectFit
imageView.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
view.addSubview(imageView)
return view
}
The just change titleView
navigationItem.titleView = imageView
let's do try and checkout
let image = UIImage(named: "Navbar_bg.png")
navigationItem.titleView = UIImageView(image: image)
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 40, height: 40))
imageView.contentMode = .ScaleAspectFit
let imageView = UIImageView(frame: (CGRect(x: 0, y: 0, width: 40, height:
40)))
imageView.contentMode = .scaleAspectFit
let image = UIImage (named: "logo") // logo is your NPG asset
imageView.image = image
self.navigationItem.titleView = imageView
Works for me in swift 4 (square image 40x40)
let imageView = UIImageView()
imageView.frame.size.width = 40
imageView.frame.size.height = 40
imageView.contentMode = .scaleAspectFit
let image = UIImage(named: "YOUR_IMAGE_NAME")
imageView.image = image
navigationItem.titleView = imageView
If you want other measures, try
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 50, height: 100.5)))
imageView.contentMode = .scaleAspectFit
let image = UIImage(named: "YOUR_IMAGE_NAME")
imageView.image = image
navigationItem.titleView = imageView
I hope it serves you. It works for me.
Objective-C version:
//create the space for the image
UIImageView *myImage = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 256, 144)];
//bind the image with the ImageView allocated
myImage.image = [UIImage imageNamed:#"logo.png"];
//add image into imageview
_myNavigationItem.titleView = myImage;
Just in case someone (like me) had arrived here looking for the answer in Objective-C.
This worked for me... try it
let image : UIImage = UIImage(named: "LogoName")
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 25, height: 25))
imageView.contentMode = .scaleAspectFit
imageView.image = image
navigationItem.titleView = imageView
In order to get the image view with the proper size and in the center, you should use the following approach:
let width = 120 // choose the image width
let height = 20 // choose the image height
let titleView = UIView(frame: CGRect(x: 0, y: 0, width: view.bounds.width, height: 44)) //44 is the standard size of the top bar
let imageView = UIImageView(frame: CGRect(x: (view.bounds.width - width)/2, y: (44 - height)/2, width: width, height: height))
imageView.contentMode = .scaleAspectFit //choose other if it makes sense
imageView.image = UIImage(named: "your_image_name")
titleView.addSubview(imageView)
navigationItem.titleView = titleView

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