I am creating UIImageViews programatically and scroll between them as pagination
How can I center each image with auto-layout programatically?
// manual attempt
viewDidLoad() {
self.scroll.frame = CGRect(x:0, y:0, width:self.view.frame.width, height:self.view.frame.height)
let scrollWidth: CGFloat = self.scroll.frame.width
let imgOne = UIImageView(frame: CGRect(x:65, y:120, width:180, height:300))
let imgTwo = UIImageView(frame: CGRect(x:scrollWidth + 65, y:120, width:180, height:300))
let imgThree = UIImageView(frame: CGRect(x:scrollWidth*2 + 65, y:120,width:180, height:300))
imgOne.image = UIImage(named: "one.png")
imgTwo.image = UIImage(named: "two.png")
imgThree.image = UIImage(named: "three.png")
imgOne.center = self.view.center // works
imgTwo.center = ??
imgThree.center = ??
self.scroll.addSubview(imgOne)
self.scroll.addSubview(imgTwo)
self.scroll.addSubview(imgThree)
}
Use UICollectionView. You can set pagingEnabled for paging between images and UICollectionViewScrollDirectionHorizontal in layout for horizontal direction. See good example of using it here.
Related
I customise the title view add a image and labels in it know I want to make it clickable but its not working. I added tap gesture in title view but its not working.
here is my code.
func navTitleWithImageAndText(titleText: String,subTitleText:String, imageName: String) -> UIView {
// Creates a new UIView
let titleView = UIView()
let label = UILabel(frame: CGRect(x: 0, y: -15, width: 0, height: 0))
// Creates a new text label
// let label = UILabel()
label.text = titleText
label.font = UIFont.boldSystemFont(ofSize: 17)
//label.center = titleView.center
label.textColor = .white
//label.textAlignment = NSTextAlignment.center
label.sizeToFit()
let subtitleLabel = UILabel(frame: CGRect(x: 0, y: 5, width: 0, height: 0))
subtitleLabel.backgroundColor = UIColor.clear
subtitleLabel.textColor = UIColor.white
subtitleLabel.font = UIFont.systemFont(ofSize: 12)
subtitleLabel.text = subTitleText
subtitleLabel.sizeToFit()
// 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 - 20
let imageY = label.frame.origin.y
let imageWidth = label.frame.size.height * imageAspect + 15
let imageHeight = label.frame.size.height + 15
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)
titleView.addSubview(subtitleLabel)
// Sets the titleView frame to fit within the UINavigation Title
titleView.sizeToFit()
return titleView
}
add tap gesture in it. but why its not working.
titleView.addGestureRecognizer(titleGestureRecognizer)
I have implemented a tap gesture on a label in the following way:-
Initialize Variable
var tap_gest = UITapGestureRecognizer()
Add gesture on Label. Add the following code in "viewDidLoad()"
if normal label then use below
self.register_as_company_lbl.isUserInteractionEnabled = true // register_as_company_lbl is my label where tap gesture added
self.tap_gest.addTarget(self, action: #selector(registerAsComapany))
self.register_as_company_lbl.addGestureRecognizer(tap_gest)
if on navigation bar title then use below
self.navigationController?.navigationBar.addGestureRecognizer(tap_gest)
Define Selector method in your ViewController Class as following
#objc func registerAsComapany(){//Add your task what you perform, In my case I have to push to another screen
let vc = UIStoryboard.init(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "CompanyDetailsViewController") as! CompanyDetailsViewController
self.navigationController?.pushViewController(vc , animated: true)
}
titleView.isUserInteractionEnabled = true
How to set UIBarButton with circular image profile
func loadProfile(){
let url = URL(string: "https://res.cloudinary.com/demo/image/upload/v1312461204/sample.jpg")!
let data = try! Data(contentsOf: url)
let img = UIImage(data: data)
let imageView = UIImageView(frame: CGRect(x: 0.0, y: 0.0, width: 40.0, height: 40.0))
imageView.image = img?.withRenderingMode(.alwaysOriginal)
imageView.layer.cornerRadius = 20.0
imageView.layer.masksToBounds = true
let barButton = UIBarButtonItem(customView: imageView)
self.tabBarController?.navigationItem.setRightBarButton(barButton, animated: false)
Failed to set Constrains thats why its behaviors!
imageView.widthAnchor.constraint(equalToConstant: buttonWidth).isActive = true
imageView.heightAnchor.constraint(equalToConstant: buttonHeight).isActive = true
Fixed Issue.
Have you tried set content mode in your imageView ?
imageView.contentMode = .scaleAspectFill
For anyone that finds this, as suggested by kiran, setting the imageView frame size is not enough. You should also set the height and width constraints. Otherwise, any animation to the navigation bar will result in the imageView.image occupying the whole navigationBar width, as seen in the image posted by the OP.
func loadProfile(){
let url = URL(string: "https://res.cloudinary.com/demo/image/upload/v1312461204/sample.jpg")!
let data = try! Data(contentsOf: url)
let img = UIImage(data: data)
let imageView = UIImageView(frame: CGRect(x: 0.0, y: 0.0, width: 40.0, height: 40.0))
// NEW CODE HERE: Setting the constraints
imageView.widthAnchor.constraint(equalToConstant: 40).isActive = true
imageView.heightAnchor.constraint(equalToConstant: 40).isActive = true
imageView.image = img?.withRenderingMode(.alwaysOriginal)
imageView.layer.cornerRadius = 20.0
imageView.layer.masksToBounds = true
let barButton = UIBarButtonItem(customView: imageView)
self.tabBarController?.navigationItem.setRightBarButton(barButton, animated: false)
}
I need in my app a custom navigation bar with an image and a text but I can't add the text.
Here is the code to add the image, how can I add the title?
let logo = #imageLiteral(resourceName: "navigationbaricon")
let imageView = UIImageView(image:logo)
self.navigationItem.titleView = imageView
Thanks
Where is the frame assigned for self.navigationItem.titleView? Set the frame for imageView and it will work.
You can wrap the UIImageView and the UILabel (which will hold the custom title) in an UIView and then assign the UIView to the self.navigationItem.titleView. Something like this:
let view = UIView(...);
let label = UILabel(...);
label.text = "Custom Title";
let image = UIImageView(image: UIImage(named: "..."));
view.addSubview(image);
view.addSubview(label);
self.navigationItem.titleView = view;
This one is worked for me
override func viewDidLoad() {
super.viewDidLoad()
let titleView = UIView()
titleView.frame = CGRect(x: 0, y: 0, width: 100, height: 40)
titleView.backgroundColor = UIColor.redColor()
let imageView = UIImageView(image: UIImage(named: "img")!)
imageView.frame = CGRectMake(0, 0, 40, 40)
imageView.contentMode = .ScaleAspectFill
titleView.addSubview(imageView)
self.navigationItem.titleView = titleView
}
I have searched a lot on stackoverflow and I havent been able to find solution for my problem which is that I need to put in navigationBar in middle section image and text next to each other but apparently I was able only to place just image or just text
Here is my code
let nav = self.navigationController?.navigationBar
nav?.barStyle = UIBarStyle.Default
nav?.tintColor = UIColor.blackColor()
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 20, height: 20))
imageView.contentMode = .ScaleAspectFit
let image = UIImage(named: "icon_heart")
imageView.image = image
self.navigationItem.title = "App name"
self.navigationItem.titleView = imageView
I am aware that it on this way it accept only image which is titleView but I cant think of some normal solution and dont know is it even possible. Also if that is not possible how can I make then blank image and draw that icon image and text next to each other and append then that new image.
Edit:
Based on awph answer I have added code like this and it works fine for my case where I have always same characters in title
let screenSize: CGRect = UIScreen.mainScreen().bounds
let nav = self.navigationController?.navigationBar
nav?.barStyle = UIBarStyle.Default
nav?.tintColor = UIColor.blackColor()
let imageView = UIImageView(frame: CGRect(x: screenSize.width / 2 - 40, y: 15, width: 20, height: 20))
imageView.contentMode = .ScaleAspectFit
let image = UIImage(named: "icon_heart")
imageView.image = image
nav!.addSubview(imageView)
// label on top of the application that contain word
var label = UILabel(frame: CGRectMake(0, 0, 0, 0))
label.center = CGPointMake(screenSize.width / 2 - 15, 17)
label.textColor = UIColor.blackColor()
label.font = UIFont.systemFontOfSize(14)
label.textAlignment = NSTextAlignment.Center
label.text = "App Name"
label.sizeToFit()
nav!.addSubview(label)
You right, as said in documentation:
// Custom view to use in lieu of a title. May be sized horizontally. Only used when item is topmost on the stack.
What you need to do is to create an UIView, add an UImageView (that contains your image) as subview (view.addSubview(imageView)) and then add a UILabel on it view.addSubview(label).
In my view controller, I added the following to be able to customize the NavigationBar, but when I got to setting the width and height of the logo, all I can change is the height.
When I edit the value in width - Nothing happens, even if I set it to 0.
Also, is it possible to use px instead of points?
override func viewDidAppear(animated: Bool) {
// 1
var nav = self.navigationController?.navigationBar
// 2
nav?.barStyle = UIBarStyle.Black
nav?.tintColor = UIColor.whiteColor()
// 3
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 40, height: 40))
// imageView.contentMode = .ScaleAspectFit
// 4
let image = UIImage(named: "trotterlogo.png")
imageView.image = image
// 5
navigationItem.titleView = imageView
}