I am working on a camera iOS application using swift. I'm segueing an image to a view(uploadView) and displaying it using that image on the in camera but when I press the cancel on the camera and return to the view(uploadView) the segued image disappears. Already tried storing that image in a new UIImage variable but for some reason still remains empty after pressing cancel or going back to that view(uploadView).
I'm not sure if there is any other way to store the image when the view loads for the first time and keep the image there.
//for my view where I am displaying the image
override func viewDidLoad() {
super.viewDidLoad()
uploadImage.image = firstImageInSecondView
UILabel.text = String(Int(50.0))
}
// this is what I am trying to show the image again
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
dismiss(animated: true, completion: nil)
uploadImage.image = firstImageInSecondView
print(uploadImage.isHidden)
}
Output is false.
Related
I have a WKWebview page in my app which selects an image to upload it so I have NO CONTROL over opening the UIImagePicker It happens natively but the "DONE" button which I can click is not shown in iPad ios 14.7.1 but it's actually clickable!!
This is how UIImagePicker shown natively
The red area is actually clickable!
I tried changing tint color globally but only the back arrow has changed the button is still hidden or something!
Use this:
extension UIImagePickerController {
open override func viewDidLoad() {
super.viewDidLoad()
self.modalPresentationStyle = UIModalPresentationStyle.custom
}
}
Try this:
extension UIImagePickerController {
open override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
self.navigationBar.topItem?.rightBarButtonItem?.tintColor = UIColor.black
self.navigationBar.topItem?.rightBarButtonItem?.isEnabled = true
}
}
I have a tableViewCell with image view.
Even though I clear the imageView and set the image I get the below unintended behaviour, where one image is overlaid over the other.
Please advice how this could be resolved.
Code on Resetting Image in ImageView:
self.profileImageLabelTVCell.cellImageView.image = nil // Clearing previous image
self.profileImageLabelTVCell.cellImageView.image = image
Here is the link for the tableViewCell code and roundedImageView class, that I've used. (Since SO did not allow the entire code to be posted here)
https://gist.github.com/pravishanth/14cdb8bf14dd8899b081bdc97988b985
Add your reset image code to the TableViewCell's
func prepareForReuse() method.
override func prepareForReuse() {
super.prepareForReuse()
cellImageView.image = nil
}
I have an activity indicator that gets presented on an iPhone and iPad. In the iPad in split screen mode it gets presented to whichever side of the view that called it. I would instead like it to get presented in the middle/center the window's screen. If I do it this way wether on the iPhone in portrait or iPad in split screen mode it will always be in the center of the screen.
How do I do this?
MyView: UIViewController{
let actInd = UIActivityIndicatorView(activityIndicatorStyle: .whiteLarge)
#IBAction fileprivate func buttonPressed(_ sender: UIButton) {
guard let window = UIApplication.shared.keyWindow else { return }
//how to add actInd as subview to the window' screen?
actInd.startAnimating()
}
}
It's pretty simple. Turn off the auto-resizing mask. Add the add actInd to window, then set the center anchors.
actInd.translatesAutoresizingMaskIntoConstraints = false
window.addSubview(actInd)
actInd.centerXAnchor.constraint(equalTo: window.centerXAnchor).isActive = true
actInd.centerYAnchor.constraint(equalTo: window.centerYAnchor).isActive = true
Window is subclass of UIView. Just add it as it's subview like you're adding a view to another view. But remember that window is shared throughout your app, so adding it every-time will consume memory, remove it after your job is done.
If you want to center it in the window, you can use autoResizingMask or add constraints to it.
new to app development.
What I want to do is allow the user to take 2 photos from the Camera and review them. Will then code around those two photos. Preference is just to take from Camera but also could be from PhotoLibrary.
My thought process around this was, click a button to take first photo, then display that photo in a UIPageViewController then allow them to take another photo by pushing a Button to call the camera again, then that Photo would be the second as part of the UIPageViewController. So the user can swipe with the 2 dots at the bottom to review, then select confirm.
So what I did was follow the UIImagePickerController to be able to allow the user to select from library or Camera and also implemented the UIPageViewController. But having trouble putting the two together.
When I get an image from Camera I think I need to save it. The pageviewcontroller gets the filenames from a NSMutableArray.
With the viewDidLoad... I call the Camera, and also the pageViewController. My problem is the pageviewcontroller gets data from pageImages[] but how do I populate the array with the image name string? Did I do it correctly below? I think i may have a problem in that does the pageviewcontroller controller automatically update once i dismiss the picker otherwise will never get the image from the camera. I am thinking i may have to call camera then pass the data to the view controller through segues?
Other thought I was having was to have a view controller that just displays the taken image, saves it, adds filename to array, then when user takes another photo, the image is saved and added to array and then passed through segue to the pageviewcontroller for the user to be able to scroll through both and either confirm or delete. Thoughts?
override func viewDidLoad() {
super.viewDidLoad()
createPhoto()
self.pageViewController = self.storyboard?.instantiateViewControllerWithIdentifier("PhotoPageViewControllerStoryBoard") as! UIPageViewController
self.pageViewController.dataSource = self
var startVc = self.pageViewControllerAtIndex(0) as PhotoContentPageViewController
var viewControllers = NSArray(object: startVc)
self.pageViewController.setViewControllers(viewControllers as? [UIViewController], direction: .Forward, animated: true, completion: nil)
self.pageViewController.view.frame = CGRectMake(0, -10, self.view.frame.size.width, self.view.frame.size.height-30)
self.addChildViewController(self.pageViewController)
self.view.addSubview(self.pageViewController.view)
self.pageViewController.didMoveToParentViewController(self)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
var newImage: UIImage
if let possibleImage = info["UIImagePickerControllerEditedImage"] as? UIImage {
newImage = possibleImage
} else if let possibleImage = info["UIImagePickerControllerOriginalImage"] as? UIImage {
newImage = possibleImage
} else {
return
}
if (picker.sourceType == UIImagePickerControllerSourceType.Camera) {
let imageName = NSUUID().UUIDString
let imagePath = getDocumentsDirectory().stringByAppendingPathComponent(imageName)
if let jpegData = UIImageJPEGRepresentation(newImage, 80) {
jpegData.writeToFile(imagePath, atomically: true)
}
pageImages!.addObject(imageName)
}
dismissViewControllerAnimated(true, completion: nil)
}
ok, think I got it, i changed the array to pass to the pageviewcontroller from the contentviewcontroller UIImages instead of filename strings.
Also, since the array was nil i didn't start the pageviewcontroller until after the first image was taken or chosen.
Off to battle the next set of code, to actually do something with the two image. most likely will need some help in the future... near future. Thanks.
I have a view controller for my app that calls another view controller modally to cover the screen with a blur effect. Inside this other view controller, I'm displaying a TVApplicationController to display TVML content with transparent background on top of this blurred view.
let appControllerContext = TVApplicationControllerContext()
guard let javaScriptURL = NSURL(string: AppDelegate.TVBootURL) else {
fatalError("unable to create NSURL")
}
appControllerContext.javaScriptApplicationURL = javaScriptURL
appControllerContext.launchOptions["BASEURL"] = AppDelegate.TVBaseURL
appController = TVApplicationController(context: appControllerContext, window: nil, delegate: self)
appController?.navigationController.modalPresentationStyle = UIModalPresentationStyle.OverFullScreen
self.presentViewController((appController?.navigationController)!, animated: true, completion: nil)
What I want to do is, when I press the MENU button, to make the TVML content go away and to dismiss my modal blur view controller. The problem is that I'm not being able to detect the "dismissal" of the TVML content so I can close my modal view controller.
I tried to use the TVApplicationControllerDelegate to receive the messages that might come while using it but nothing helped.
I just found a workaround for this. I created a small class like this:
import UIKit
class HiddenView: UIView {
override func canBecomeFocused() -> Bool {
return true;
}
}
Then, what I did is to create an instance of this HiddenView on the ViewDidLoad of the blurred view controller and add it to the view controllers's view.
let hiddenView = HiddenView(frame: CGRectMake(0,0,10,10))
self.view.addSubview(hiddenView)
// it won't appear on the screen since it has no color/text/etc
Now, when I press the MENU button on the remote, when the TVML content is dismissed, the delegate method didUpdateFocusInContext on my blurred modal view controller is called, so I can dismiss it like this:
override func didUpdateFocusInContext(context: UIFocusUpdateContext, withAnimationCoordinator coordinator: UIFocusAnimationCoordinator) {
self.dismissViewControllerAnimated(true, completion: nil)
}
If anyone knows a better way to handle this than having to do this workaround, it would be nice to know.