I'm trying to create a UIView that has a border color / width, add a subview UIImageView that has a different border color / width, and also has an image inside of all that. So essentially what I want is an image with a white border followed by a blue border.
Right now I'm only seeing the blue border show up. Here is what I am doing:
(Inside of a closure, where outerView is a UIView)
outerView.frame = cell.frame
outerView.layer.borderColor = UIColor.blue.cgColor
outerView.layer.borderWidth = 3.0
outerView.layer.cornerRadius = outerView.frame.height / 2
outerView.clipsToBounds = true
outerView.backgroundColor = UIColor.clear
let imageView = UIImageView(frame: outerView.frame)
imageView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
self?.controller?.setupImageView(imageView, cell: cell)
outerView.addSubview(imageView)
(setupImageView:)
let frame = imageView.frame
imageView.image = imageConstants.imageToDisplay
imageView.clipsToBounds = true
imageView.layer.cornerRadius = frame.height / 2
imageView.layer.borderWidth = 3.0
imageView.layer.borderColor = UIColor.white.cgColor
If I change it up so the closure just returns me a UIImageView type (outerView is a UIImageView) and pass that straight into the setupImageView(imageView:cell:) function, I'm able to see the image along with a white border.
I'm not sure what I'm missing in order to get both to display.
Thank you in advance!
outerView and your imageView have the same frame (This mean they have the same height and the same width) the imageView's border is under the outherView's border.
Try this:
let outerFrame = outerView.frame
let frame = CGRect(x: outerFrame.origin.x - 3, y: outerFrame.origin.y - 3, width: outerFrame.size.width -6, height: outerFrame.size.height -6)
3 because borderWidth = 3.0
and:
let imageView = UIImageView(frame: frame)
Related
I'm trying to create something like this image except for those purple corners. Notice how the blue (shown as purple) contentView is not being clipped or masked by its parent containerView.
The requirements are to have a view which:
Has rounded corners.
Has a shadow.
It's subviews don't leak outside of it or its corners.
Here is the code I'm playing around with and I'm not sure exactly how to get this to work.
let containerView = UIView(frame: CGRect(x: 300, y: 100, width: 200, height: 200))
containerView.backgroundColor = .green
containerView.layer.cornerRadius = 40
containerView.layer.shadowRadius = 50
containerView.layer.shadowOffset = .zero
containerView.layer.shadowColor = UIColor.red.cgColor
containerView.layer.shadowOpacity = 1
view.addSubview(containerView)
let backgroundLayer = CALayer()
backgroundLayer.frame = containerView.layer.bounds
backgroundLayer.backgroundColor = UIColor.black.cgColor
backgroundLayer.opacity = 0.5
backgroundLayer.cornerRadius = containerView.layer.cornerRadius
backgroundLayer.masksToBounds = true
containerView.layer.addSublayer(backgroundLayer)
let contentView = UIView(frame: containerView.bounds)
contentView.backgroundColor = .blue
contentView.alpha = 0.3
// Omitting this line will produce a green square with rounded corners
// and a red shadow.
containerView.addSubview(contentView)
Based on this example code, one of my more specific questions is why doesn't the backgroundLayer which sets masksToBounds = true, mask the view's subview?
Based on this example code, one of my more specific questions is why doesn't the backgroundLayer which sets masksToBounds = true, mask the view's subview?
Because the subview is the subview of the view, not of the backgroundLayer.
Views are layers. Clipping is masking. A layer masks its own drawing and that of its sublayers. The subview's layer is not a sublayer of the backgroundLayer. It is its sibling, not its child. Your view/layer hierarchy looks like this:
containerView
| \
[layer] backgroundLayer
| (clips itself and its sublayers,
contentView but it has no sublayers)
|
[layer]
I am trying to create an ImageView that has rounded corners and a shadow to give it some depth. I was able to create a shadow for the UIImageView, but whenever I added the code to also make it have rounded corners, it only had rounded corners with no shadow. I have an IBOutlet named myImage, and it is inside of the viewDidLoad function. Does anybody have any ideas on how to make it work? What am I doing wrong?
override func viewDidLoad() {
super.ViewDidLoad()
myImage.layer.shadowColor = UIColor.black.cgColor
myImage.layer.shadowOpacity = 1
myImage.layer.shadowOffset = CGSize.zero
myImage.layer.shadowRadius = 10
myImage.layer.shadowPath = UIBezierPath(rect: myImage.bounds).cgPath
myImage.layer.shouldRasterize = false
myImage.layer.cornerRadius = 10
myImage.clipsToBounds = true
}
If you set clipsToBounds to true, this will round the corners but prevent the shadow from appearing. In order to resolve this, you can create two views. The container view should have the shadow, and its subview should have the rounded corners.
The container view has clipsToBounds set to false, and has the shadow properties applied. If you want the shadow to be rounded as well, use the UIBezierPath constructor that takes in a roundedRect and cornerRadius.
let outerView = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
outerView.clipsToBounds = false
outerView.layer.shadowColor = UIColor.black.cgColor
outerView.layer.shadowOpacity = 1
outerView.layer.shadowOffset = CGSize.zero
outerView.layer.shadowRadius = 10
outerView.layer.shadowPath = UIBezierPath(roundedRect: outerView.bounds, cornerRadius: 10).cgPath
Next, set the image view (or any other type of UIView) to be the same size of the container view, set clipsToBounds to true, and give it a cornerRadius.
let myImage = UIImageView(frame: outerView.bounds)
myImage.clipsToBounds = true
myImage.layer.cornerRadius = 10
Finally, remember to make the image view a subview of the container view.
outerView.addSubview(myImage)
The result should look something like this:
Swift 5:
You can use the below extension:
extension UIImageView {
func applyshadowWithCorner(containerView : UIView, cornerRadious : CGFloat){
containerView.clipsToBounds = false
containerView.layer.shadowColor = UIColor.black.cgColor
containerView.layer.shadowOpacity = 1
containerView.layer.shadowOffset = CGSize.zero
containerView.layer.shadowRadius = 10
containerView.layer.cornerRadius = cornerRadious
containerView.layer.shadowPath = UIBezierPath(roundedRect: containerView.bounds, cornerRadius: cornerRadious).cgPath
self.clipsToBounds = true
self.layer.cornerRadius = cornerRadious
}
}
How to use:
Drag a UIView on the storyboard
Drag an ImageView inside that UIView
Storyboard should look like this:
Create IBOutlet for both Views, call extension on your ImageView, and pass above created UIView as an argument.
Here is the output :
Finally here is how to
Properly have an image view, with rounded corners AND shadows.
It's this simple:
First some bringup code ..
class ShadowRoundedImageView: UIView {
override init(frame: CGRect) {
super.init(frame: frame); common() }
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder); common() }
private func common() {
backgroundColor = .clear
clipsToBounds = false
self.layer.addSublayer(shadowLayer)
self.layer.addSublayer(imageLayer) // (in that order)
}
#IBInspectable var image: UIImage? = nil {
didSet {
imageLayer.contents = image?.cgImage
shadowLayer.shadowPath = (image == nil) ? nil : shapeAsPath
}
}
and then the layers ...
var imageLayer: CALayer = CALayer()
var shadowLayer: CALayer = CALayer()
var shape: UIBezierPath {
return UIBezierPath(roundedRect: bounds, cornerRadius:50)
}
var shapeAsPath: CGPath {
return shape.cgPath
}
var shapeAsMask: CAShapeLayer {
let s = CAShapeLayer()
s.path = shapeAsPath
return s
}
override func layoutSubviews() {
super.layoutSubviews()
imageLayer.frame = bounds
imageLayer.contentsGravity = .resizeAspectFill // (as preferred)
imageLayer.mask = shapeAsMask
shadowLayer.shadowPath = (image == nil) ? nil : shapeAsPath
shadowLayer.shadowOpacity = 0.80 // etc ...
}
}
Here is the
Explanation
UIImageView is useless, you use a UIView
You need two layers, one for the shadow and one for the image
To round an image layer you use a mask
To round a shadow layer you use a path
For the shadow qualities, obviously add code as you see fit
shadowLayer.shadowOffset = CGSize(width: 0, height: 20)
shadowLayer.shadowColor = UIColor.purple.cgColor
shadowLayer.shadowRadius = 5
shadowLayer.shadowOpacity = 0.80
For the actual shape (the bez path) make it any shape you wish.
(For example this tip https://stackoverflow.com/a/41553784/294884 shows how to make only one or two corners rounded.)
Summary:
• Use two layers on a UIView
Make your bezier and ...
• Use a mask on the image layer
• Use a path on the shadow layer
Here is a another solution (tested code) in swift 2.0
If you set clipsToBounds to true, this will round the corners but prevent the shadow from appearing. So, you can add same size UIView in storyboard behind imageview and we can give shadow to that view
SWIFT 2.0
outerView.layer.cornerRadius = 20.0
outerView.layer.shadowColor = UIColor.blackColor().CGColor
outerView.layer.shadowOffset = CGSizeMake(0, 2)
outerView.layer.shadowOpacity = 1
outerView.backgroundColor = UIColor.whiteColor()
You can use a simple class I have created to add image with rounded corners and shadow directly from Storyboard
You can find the class here
Problem visually:
I have tried putting the image in the center of its own frame with no luck. I have also tried to center it with playing the x of the CGRect with no luck either. I presume I can just put an empty icon with the same background as the navigation bar; however, I don't want to do it that way. I might have 2-3 icons on the right; then what?
let image = UIImage(named: "some_logo")!
let imageSize = CGSizeMake(60, 42)
let marginX: CGFloat = (self.navigationController!.navigationBar.frame.size.width / 2) - (imageSize.width / 2)
let imageView = UIImageView(frame: CGRect(x: marginX, y: 0, width: imageSize.width, height: imageSize.height))
imageView.image = image
imageView.contentMode = .ScaleAspectFit
self.navigationItem.titleView = imageView
I prefer swift but obj-c solutions are welcomed as well.
Any pointers appreciated.
This app has nothing to do with KIA, it is just some logo I got off the google search, searching "some logo".
I have faced the same issue. Then i tried one code shown below.
override func viewDidAppear(animated: Bool) {
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 150, height: 40))
imageView.contentMode = .ScaleAspectFit
let image = UIImage(named: "googlePlus")
imageView.image = image
navigationItem.titleView = imageView
}
This Code working fine when i tested with Left & Right Bar Button.
But in my previous code there is no Right Bar Button.
So the image is moving towards right.
For solving this i created a Right Bar Button & change the Tint color to clear color.
So everything seems to be working fine. This is one Temporary Solution for your problem.
The easiest way of doing this is in Interface Builder.
Simply drag a 'NavigationItem' from the object library and place it into your ViewController, then place a UIView where the title goes (ensure you set the background to 'clear')
Then place a UIImageView into that view and set the image in the Attributes Inspector to your required image. Scale your UIImage accordingly and set your your constraints accordingly.
I created an extension for solving this problem using the hint of #idrougge.
In order to center the title view image no matter what buttons you have, a content view is set as title view, then the image view is added as child of the content view. Finally, using constraints the image view is aligned inside its parent (content view).
import UIKit
extension UIViewController {
func addLogoToNavigationBarItem() {
let imageView = UIImageView()
imageView.translatesAutoresizingMaskIntoConstraints = false
imageView.heightAnchor.constraint(equalToConstant: <your_height>).isActive = true
imageView.contentMode = .scaleAspectFit
imageView.image = <your_image>
//imageView.backgroundColor = .lightGray
// In order to center the title view image no matter what buttons there are, do not set the
// image view as title view, because it doesn't work. If there is only one button, the image
// will not be aligned. Instead, a content view is set as title view, then the image view is
// added as child of the content view. Finally, using constraints the image view is aligned
// inside its parent.
let contentView = UIView()
self.navigationItem.titleView = contentView
self.navigationItem.titleView?.addSubview(imageView)
imageView.centerXAnchor.constraint(equalTo: contentView.centerXAnchor).isActive = true
imageView.centerYAnchor.constraint(equalTo: contentView.centerYAnchor).isActive = true
}
}
I hope this helps someone,
Xavi
As question heading stated "Swift / Obj-C" so I am sharing code of Obj-C :
UIImageView *titleImage = (UIImageView *)self.navigationItem.titleView;
titleImage = [[UIImageView alloc]initWithFrame:CGRectMake((self.navigationController.navigationBar.frame.size.width/2) - (100/2), 0, 100,self.navigationController.navigationBar.frame.size.height)];
//setting the image for UIImageView
titleImage.image = [UIImage imageNamed:#"someLogo"];
titleImage.contentMode = UIViewContentModeCenter;
self.navigationItem.titleView = titleImage;
Had same issue on phones with smaller sizes. Image in title was moving to right. Causing this issue back button -> [back_button][title_view]. Its centered when there is no back button or there is right bar button. Richard Hope's was right, you just need to put UIView first, and then put UIImageView as subview. 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
What about setting the center of your image equals to the navigationBar.center instead of setting a margin?
//assuming we already have our navigationController
let myNicelLogoWidth = 100
let myNiceLogoHeight = 50
//start positioning your logo at 0.0, 0.0
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: myNicelLogoWidth, height: myNiceLogoHeight))
imageView.contentMode = .scaleAspectFit
imageView.center = navigationBar.center //the put your image at the center
let image = UIImage(named: "myNiceLogoImage")
imageView.image = image
navigationItem.titleView = imageView
I once face with this problem, and finally i found out that the problem is the previous navigation bar title still located next to burger button, but it's invisible.
Fast solution but not sure if it's the best is to change the previous navigation bar title to empty string before show the next view controller.
Hope it's help.
I can set an image to my TableView background, but the image is in the center of the view.
How can I set the image to top ?
I'm using staticTableView
let image = UIImageView(image: UIImage(named: "img.jpg"))
self.settingsTableView.backgroundView = image
self.settingsTableView.backgroundView?.frame = CGRectZero
self.settingsTableView.backgroundView?.contentMode = UIViewContentMode.ScaleAspectFit
If you're using a static table and theres no chance of changing it you might want to take an approach like this:
override func viewDidLoad() {
super.viewDidLoad()
//Create the UIImage
let image = UIImage(named: "testing")
//Create a container view that will take all of the tableView space and contain the imageView on top
let containerView = UIView(frame: CGRect(x: 0.0, y: 0.0, width: self.view.bounds.width, height: self.view.bounds.height))
//Create the UIImageView that will be on top of our table
let imageView = UIImageView(frame: CGRect(x: 0.0, y: 0.0, width: self.view.bounds.width, height: image!.size.height))
//Set the image
imageView.image = image
//Clips to bounds so the image doesnt go over the image size
imageView.clipsToBounds = true
//Scale aspect fill so the image doesn't break the aspect ratio to fill in the header (it will zoom)
imageView.contentMode = UIViewContentMode.ScaleAspectFit
containerView.addSubview(imageView)
self.tableView.backgroundView = containerView
}
Make the cells or the headers transparent as you wish. I don't know how your UI should work. This method WON'T scroll the imageView but you can simply do it in the scrollView delegate method. Let me know if you need it to scroll and I'll help you out
I am trying to create an ImageView that has rounded corners and a shadow to give it some depth. I was able to create a shadow for the UIImageView, but whenever I added the code to also make it have rounded corners, it only had rounded corners with no shadow. I have an IBOutlet named myImage, and it is inside of the viewDidLoad function. Does anybody have any ideas on how to make it work? What am I doing wrong?
override func viewDidLoad() {
super.ViewDidLoad()
myImage.layer.shadowColor = UIColor.black.cgColor
myImage.layer.shadowOpacity = 1
myImage.layer.shadowOffset = CGSize.zero
myImage.layer.shadowRadius = 10
myImage.layer.shadowPath = UIBezierPath(rect: myImage.bounds).cgPath
myImage.layer.shouldRasterize = false
myImage.layer.cornerRadius = 10
myImage.clipsToBounds = true
}
If you set clipsToBounds to true, this will round the corners but prevent the shadow from appearing. In order to resolve this, you can create two views. The container view should have the shadow, and its subview should have the rounded corners.
The container view has clipsToBounds set to false, and has the shadow properties applied. If you want the shadow to be rounded as well, use the UIBezierPath constructor that takes in a roundedRect and cornerRadius.
let outerView = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
outerView.clipsToBounds = false
outerView.layer.shadowColor = UIColor.black.cgColor
outerView.layer.shadowOpacity = 1
outerView.layer.shadowOffset = CGSize.zero
outerView.layer.shadowRadius = 10
outerView.layer.shadowPath = UIBezierPath(roundedRect: outerView.bounds, cornerRadius: 10).cgPath
Next, set the image view (or any other type of UIView) to be the same size of the container view, set clipsToBounds to true, and give it a cornerRadius.
let myImage = UIImageView(frame: outerView.bounds)
myImage.clipsToBounds = true
myImage.layer.cornerRadius = 10
Finally, remember to make the image view a subview of the container view.
outerView.addSubview(myImage)
The result should look something like this:
Swift 5:
You can use the below extension:
extension UIImageView {
func applyshadowWithCorner(containerView : UIView, cornerRadious : CGFloat){
containerView.clipsToBounds = false
containerView.layer.shadowColor = UIColor.black.cgColor
containerView.layer.shadowOpacity = 1
containerView.layer.shadowOffset = CGSize.zero
containerView.layer.shadowRadius = 10
containerView.layer.cornerRadius = cornerRadious
containerView.layer.shadowPath = UIBezierPath(roundedRect: containerView.bounds, cornerRadius: cornerRadious).cgPath
self.clipsToBounds = true
self.layer.cornerRadius = cornerRadious
}
}
How to use:
Drag a UIView on the storyboard
Drag an ImageView inside that UIView
Storyboard should look like this:
Create IBOutlet for both Views, call extension on your ImageView, and pass above created UIView as an argument.
Here is the output :
Finally here is how to
Properly have an image view, with rounded corners AND shadows.
It's this simple:
First some bringup code ..
class ShadowRoundedImageView: UIView {
override init(frame: CGRect) {
super.init(frame: frame); common() }
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder); common() }
private func common() {
backgroundColor = .clear
clipsToBounds = false
self.layer.addSublayer(shadowLayer)
self.layer.addSublayer(imageLayer) // (in that order)
}
#IBInspectable var image: UIImage? = nil {
didSet {
imageLayer.contents = image?.cgImage
shadowLayer.shadowPath = (image == nil) ? nil : shapeAsPath
}
}
and then the layers ...
var imageLayer: CALayer = CALayer()
var shadowLayer: CALayer = CALayer()
var shape: UIBezierPath {
return UIBezierPath(roundedRect: bounds, cornerRadius:50)
}
var shapeAsPath: CGPath {
return shape.cgPath
}
var shapeAsMask: CAShapeLayer {
let s = CAShapeLayer()
s.path = shapeAsPath
return s
}
override func layoutSubviews() {
super.layoutSubviews()
imageLayer.frame = bounds
imageLayer.contentsGravity = .resizeAspectFill // (as preferred)
imageLayer.mask = shapeAsMask
shadowLayer.shadowPath = (image == nil) ? nil : shapeAsPath
shadowLayer.shadowOpacity = 0.80 // etc ...
}
}
Here is the
Explanation
UIImageView is useless, you use a UIView
You need two layers, one for the shadow and one for the image
To round an image layer you use a mask
To round a shadow layer you use a path
For the shadow qualities, obviously add code as you see fit
shadowLayer.shadowOffset = CGSize(width: 0, height: 20)
shadowLayer.shadowColor = UIColor.purple.cgColor
shadowLayer.shadowRadius = 5
shadowLayer.shadowOpacity = 0.80
For the actual shape (the bez path) make it any shape you wish.
(For example this tip https://stackoverflow.com/a/41553784/294884 shows how to make only one or two corners rounded.)
Summary:
• Use two layers on a UIView
Make your bezier and ...
• Use a mask on the image layer
• Use a path on the shadow layer
Here is a another solution (tested code) in swift 2.0
If you set clipsToBounds to true, this will round the corners but prevent the shadow from appearing. So, you can add same size UIView in storyboard behind imageview and we can give shadow to that view
SWIFT 2.0
outerView.layer.cornerRadius = 20.0
outerView.layer.shadowColor = UIColor.blackColor().CGColor
outerView.layer.shadowOffset = CGSizeMake(0, 2)
outerView.layer.shadowOpacity = 1
outerView.backgroundColor = UIColor.whiteColor()
You can use a simple class I have created to add image with rounded corners and shadow directly from Storyboard
You can find the class here