In my app I want to change the titleView of my Navigation Controller to a custom ImageView but I have a very strange problem. I basically just can`t set the frame of my ImageView.
This is my code:
func NavBarEinrichten(){
let logo = UIImage(named: "Notennamen für Griffe 1")!
let imageView = UIImageView(image:logo)
imageView.contentMode = .scaleAspectFit
//To show the problem better
imageView.backgroundColor = UIColor.red
let navController = navigationController!
let bannerWidth:CGFloat = 20
let bannerHeight:CGFloat = navController.navigationBar.frame.size.height
let bannerX = bannerWidth / 2 - logo.size.width / 2
let bannerY = bannerHeight / 2 - logo.size.height / 2
imageView.frame = CGRect(x: bannerX, y: bannerY, width: bannerWidth, height: bannerHeight)
self.navigationItem.titleView?.frame = CGRect(x: bannerX, y: bannerY, width: bannerWidth, height: bannerHeight)
navigationItem.titleView = imageView
print(imageView.frame, "imageView frame")
}
The print statement prints:
(0.0, 0.0, 357.0, 142.0) imageView frame
Which is right, because it looks like this when i run it, but not like it should be. Because I want the width to be 20.
In the simulator it looks like this:
I tried to call this method in viewDidLoad(), viewWillAppear()and viewDidLayoutSubviews()
Every time with the exact same outcome...
Can you help me?
Related
I created an UITextView and I can add image with image picker into text view. But I have some problem about replacement image. I want add this image end of the text. And I want to add images more than one. (like: text + image + text...). How can I solve this problem ? Can anyone help me ?
let pickImage = UIImageView() // this is for imagepickercontroller
lazy var writePost: UITextView = {
let wpost = UITextView()
let images = pickImage
let attachment = NSTextAttachment()
let attString = NSAttributedString(attachment: attachment)
attachment.image = images.image
images.frame = CGRect(x: 0, y: 0, width: 220, height: 220)
images.contentMode = .scaleAspectFill
wpost.textStorage.insert(attString, at: wpost.selectedRange.location)
wpost.addSubview(images)
wpost.textAlignment = .center
wpost.textColor = UIColor.lightGray
wpost.font = UIFont(name: "AvenirNext-DemiBoldItalic", size: 16)
wpost.isEditable = true
wpost.isScrollEnabled = true
wpost.layer.borderWidth = 1.5
wpost.layer.cornerRadius = 7.0
wpost.layer.borderColor = UIColor.orange.cgColor
wpost.delegate = self
return wpost
}()
What you should do is use UITextView's textContainer's exclusionPaths property. The exclusionPaths property lets you assign an array of UIBezierPaths to your textContainer. When exclusionPaths are set, none of the UITextView's text will appear within these paths. You could then add a UIImageView as a subview of the UITextView's super view placed above the UITextView that has a frame equal to said exclusion path.
The end result will be a UITextView with a UIImageView placed above it. None of the UITextView's text will be blocked by the UIImageView as the UITextView's textContainer's exclusionPaths have instructed the text not to populate there.
Here is an example of some code I've done to do something similar, with variable names changed to match your code a bit:
let imageView: UIImageView!
func addImageView() {
imageView = UIImageView(frame: CGRect(x: textView.frame.maxX - 200, y: textView.frame.maxY - 150, width: 200, height: 150))
textView.superView.addSubview(imageView)
}
func setExclusionPath(for imageView: UIImageView) {
let imageViewPath = UIBezierPath(rect: CGRect(x: textView.frame.maxX - imageView.frame.width, y: textView.frame.maxY - imageView.frame.height, width: imageView.frame.width, height: imageView.frame.height))
textView.textContainer.exclusionPaths.append(imageViewPath)
}
func someMethod() {
addImageView()
setExclusionPath(for: self.imageView)
}
Resources:
exclusionPaths reference from Apple
I am trying to add a UIImage to the UICollectionViewController by using the following code:
let backgroundImage = UIImageView(frame: CGRect(x: 0, y: 0, width: 430, height: 550))
backgroundImage.image = UIImage(named: "fantasy_football_hero_tile_cropped.png")
backgroundImage.contentMode = UIView.ContentMode.scaleAspectFit
backgroundImage.clipsToBounds = true
self.view.insertSubview(backgroundImage, at: 0)
My issue is that the image is not at the bottom/lowest part of the screen which is what I am trying to achieve... how can I clip it to the bottom?! I am not using story board, can I programmatically anchor the image to the bottom as I could do in a storyboard?
This is especially true since the screen sizes for the phones are different, but the desire is still to have it anchored to the bottom.
you can add programatically. I think you add/insert some views to the self.view that will also affect simple scenario
let backgroundImageV = UIView(frame: CGRect(x: 0, y: 0, width: 430, height: 500))
backgroundImageV.backgroundColor = UIColor.blue
backgroundImageV.contentMode = UIView.ContentMode.scaleAspectFit
backgroundImageV.clipsToBounds = true
self.view.addSubview(backgroundImageV)
let backgroundImageV2 = UIView(frame: CGRect(x: 0, y: 0, width: 430, height: 510))
backgroundImageV2.backgroundColor = UIColor.green
backgroundImageV2.contentMode = UIView.ContentMode.scaleAspectFit
backgroundImageV2.clipsToBounds = true
self.view.insertSubview(backgroundImageV2, at: 0)
let backgroundImage = UIImageView(frame: CGRect(x: 0, y: 0, width: 430, height: 550))
backgroundImage.backgroundColor = UIColor.red
backgroundImage.contentMode = UIView.ContentMode.scaleAspectFit
backgroundImage.clipsToBounds = true
self.view.insertSubview(backgroundImage, at: 0)
Here Red will be bottom Green will be in 1. because you add that red colored view later. So It will work. Can you please show your full code. It will work
One problem here is that self.view for a UICollectionViewController is the UICollectionView. This is a scroll view, so no matter where you put this image view, it is going to move when the scroll view scrolls.
If that isn't what you want, there is a simple solution: set the image view as the collection view's backgroundView. That is a stationary view that forms the background to the collection view no matter how it is scrolled. If you set the image view's contentMode to bottom the image will be centered at the bottom, which seems to be what you are after.
I want to add a logo as a background image to my tableView. Image size is 50px, 50px.
I tried the code below, but this puts the image lower right corner.
let imageView = UIImageView(image: UIImage(named: "logo"))
imageView.contentMode = .scaleAspectFit
imageView.layer.frame = CGRect(x: self.view.frame.midX, y: self.view.frame.midY, width: 50, height: 50)
let tableViewBackgroundView = UIView()
tableViewBackgroundView.addSubview(imageView)
self.tableView.backgroundView = tableViewBackgroundView
There are a few points about swift that are pretty key:
1) The x and y parameters in CGRect.init(x:y:width:height:) don't refer to the center of the imageView. Instead, they are points in a coordinate system where (0, 0) is the Upper Left Corner of the view that the CGRect is being presented over, and
2) UIImageView actually inherits from UIView, so because of this you can just say
tableView.backgroundView = imageView
You shouldn't have to fiddle around with any CGRects, I believe this code should work just fine, although you may have to fiddle with different contentMode properties to get it to display how you like.
let imageView = UIImageView(image: UIImage(named: "logo"))
imageView.layer.frame = CGRect(x: 0, y: 0, width: 50, height: 50)
imageView.layer.frame.midX = tableView.layer.frame.midX
imageView.layer.frame.midY = tableView.layer.frame.midY
tableView.backgroundView = imageView
I am making an app that has a UIWebView along with a button on a single view controller. When the button is clicked, an image (of the UIWebView) is captured using UIGraphicsContext.
This part works great! But when the button is clicked, after capturing the image, it displays the image as a subview on the same view, and I have been trying to use an ImageCropper Library that draws a CGRect in another subview over the UIImageView on the screen with a submit button. The rectangle itself can be resized (dragging the corners/edges) and moved around the view.
When the submit button is clicked, another subview is displayed in the top left hand portion of screen and display the image that was cropped (after clicking submit button) The idea is to only capture what is inside the rectangle. I am able to get the code working but the image captured is of the same image but not a section that is inside the CGRect.
I have 3 images that show how it works and shows the image that is cropped incorrectly.enter image description here . Shot 1 . Shot 2
Shot 3. I believe my problems lies within the size of image captured and the size of the image with the crop rect are not equal and that is why it is distorting it.
Does anyone know what might be the cause? Sorry for the long winded question but any help would be greatly appreciated!
Here is my code below:
ViewController.swift:
class ViewController: UIViewController {
#IBOutlet var webView: UIWebView!
#IBOutlet var imageView: UIImageView!
override func viewDidLoad() {
imageView.isHidden = true
let aString = URL(string: "https://www.kshuntfishcamp.com/home.page")
webView.loadRequest(URLRequest(url: aString!))
super.viewDidLoad()
}
#IBAction func takePhotoPressed(_ sender: UIButton) {
UIGraphicsBeginImageContextWithOptions(webView.bounds.size, false, 0.0)
if let aContext = UIGraphicsGetCurrentContext(){
webView.layer.render(in: aContext)
}
let capturedImage:UIImage? = UIGraphicsGetImageFromCurrentImageContext()
imageView = UIImageView(frame: CGRect(x: 22, y: 123, width: 330, height: 330))
let image = capturedImage
imageView.image = image
imageView.contentMode = UIViewContentMode.scaleAspectFill
imageView.clipsToBounds = true
imageView.isHidden = true
webView.isHidden = true
let editView = EditImageView(frame: self.view.frame)
let image2 = capturedImage!
editView.initWithImage(image: image2)
let croppedImage = editView.getCroppedImage()
self.view.addSubview(editView)
self.view.backgroundColor = UIColor.clear
UIImageWriteToSavedPhotosAlbum(croppedImage, nil, nil, nil)
}
EditImageView.swift - source (https://github.com/Thanatos-L/LyEditImageView)-only including parts that seem relevant to solving the problem
func initWithImage(image:UIImage){
imageView = UIImageView(frame: CGRect(x: 22, y: 123, width: 330, height: 330))
imageView.tag = IMAGE_VIEW_TAG;
self.addSubview(self.imageView)
imageView.isUserInteractionEnabled = true;
imageView.image = image
imageView.frame = CGRect(x: 0, y: 0, width: image.size.width, height: image.size.height)
let frame = AVMakeRect(aspectRatio: imageView.frame.size, insideRect: self.frame);
imageView.frame = frame
originImageViewFrame = frame
NSLog("initWithImage %#", NSStringFromCGRect(originImageViewFrame))
imageZoomScale = 1.0
commitInit()
}
private func cropImage() {
let rect = self.convert(cropView.frame, to: imageView)
let imageSize = imageView.image?.size
let ratio = originImageViewFrame.size.width / (imageSize?.width)!
let zoomedRect = CGRect(x: rect.origin.x / ratio, y: rect.origin.y / ratio, width: rect.size.width / ratio, height: rect.size.height / ratio)
let croppedImage = cropImage(image: imageView.image!, toRect: zoomedRect)
var view: UIImageView? = self.viewWithTag(1301) as? UIImageView
if view == nil {
view = UIImageView()
}
view?.frame = CGRect(x: 0, y: 0, width: croppedImage.size.width , height: croppedImage.size.height)
view?.image = croppedImage
view?.tag = 1301
self.addSubview(view!)
}
I've been trying to make a zoom animation like Facebook when you click a picture into a cell to move into the middle of the screen. The animation works, but for a reason that I can not figure out, it is not starting from the initial position it is giving me another frame. Please help, I've been struggling with this for a few days now.
I am using a collectionView with CustomCell and everything it's done programmatically:
The function in CenterVC:
//MARK: Function to animate Image View (it will animate to the middle of the View)
func animateImageView(statusImageView : UIImageView) {
//Get access to a starting frame
statusImageView.frame.origin.x = 0
if let startingFrame = statusImageView.superview?.convert(statusImageView.frame, to: nil) {
//Add the view from cell to the main view
let zoomImageView = UIView()
zoomImageView.backgroundColor = .red
zoomImageView.frame = statusImageView.frame
view.addSubview(zoomImageView)
print("Starting frame is: \(startingFrame)")
print("Image view frame is: \(statusImageView.frame)")
UIView.animate(withDuration: 0.75, animations: {
let height = (self.view.frame.width / startingFrame.width) * startingFrame.height
let y = self.view.frame.height / 2 - (height / 2)
zoomImageView.frame = CGRect(x: 0, y: y, width: self.view.frame.width, height: height)
})
}
}
This is the pictureView inside the cell and the constraints (this is where I am setting up the picture for the view, and I am using in cellForRowAtIndexPath cell.centerVC = self):
var centerVC : CenterVC?
func animate() {
centerVC?.animateImageView(statusImageView: pictureView)
}
let pictureView : UIImageView = {
let imageView = UIImageView()
imageView.contentMode = .scaleAspectFill
imageView.image = UIImage(named: "cat")
imageView.backgroundColor = UIColor.clear
imageView.layer.masksToBounds = true
imageView.isUserInteractionEnabled = true
imageView.translatesAutoresizingMaskIntoConstraints = false
return imageView
}()
addConstraintsWithFormat(format: "V:|-5-[v0(40)]-5-[v1]-5-[v2(200)]", views: profileImage, postTextView, pictureView)
addConstraintsWithFormat(format: "H:|[v0]|", views: pictureView)
This is what it prints out in the debugger:
Starting frame is: (5.0, 547.5, 365.0, 200.0)
Image view frame is: (0.0, 195.5, 365.0, 200.0)
As you can see the starting frame it's different from the initial frame and position of the picture. The animation it's not leaving the initial position it just appears somewhere on top and animates to the middle. I don't know what to do, please advice.
For some reason, it was not reading the starting frame rect so I've made a new CGRect that gets the origin and set the size of the picture: (it animates perfectly now)
zoomImageView.frame = CGRect(origin: startingFrame.origin, size: CGSize(width: view.frame.width, height: statusImageView.frame.height))