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How to set indicatorType in KingFisher v5.0.0 from inside an extension on UIImageView?


How to set indicatorType in KingFisher v5.0.0 from inside an extension on UIImageView?

By : Alfred Young
Date : November 22 2020, 04:01 AM
it helps some times As in this issue on the GitHub repository of the library, it turns out that kf variable now refers to a struct for performance considerations in Kingfisher, so to handle it we need to a create a copy for it like the following:
code :
extension UIImageView {
    func test() {
        var kf = self.kf
        kf.indicatorType = .activity
    }
}


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After rotation being made to UIImageView, how should I check if a touch point is inside the UIImageView region?

After rotation being made to UIImageView, how should I check if a touch point is inside the UIImageView region?


By : user3855599
Date : March 29 2020, 07:55 AM
hop of those help? I have tried checking the CGRect: , try this
code :
CGPoint touchLocation = [touch locationInView:self];
 if (CGRectContainsPoint(myImageView.frame, touchLocation))
UIPanGestureRecognizer for UIImageView inside UIImageView inside UIScrollView

UIPanGestureRecognizer for UIImageView inside UIImageView inside UIScrollView


By : user2876482
Date : March 29 2020, 07:55 AM
To fix this issue UIImageViews aren't user interaction enabled by default, so you have to enable user interaction for both the pin UIImageView and its superview UIImageView in order for the gesture to be recognized.
How to set indicatorType during setBackgroundImage for UIButton using Kingfisher

How to set indicatorType during setBackgroundImage for UIButton using Kingfisher


By : steve life
Date : March 29 2020, 07:55 AM
This might help you No direct way to do that
but you can do it like that create Custom UIButton with indicator like that
code :
let btn = LoadingButton()
    btn.showLoading()
    btn.kf.setBackgroundImage(with: URL(string: ""), for: .normal) { (image, error, cachType, url) in
      btn.hideLoading()
    }
How to resize UIImageView after loading image from URL w/ Kingfisher

How to resize UIImageView after loading image from URL w/ Kingfisher


By : jha
Date : March 29 2020, 07:55 AM
wish helps you You could simply try to resize the image view after setting its image property. For example:
code :
class ResizableImageView: UIImageView {

  override var image: UIImage? {
    didSet {
      guard let image = image else { return }

      let resizeConstraints = [
        self.heightAnchor.constraint(equalToConstant: image.size.height),
        self.widthAnchor.constraint(equalToConstant: image.size.width)
      ]

      if superview != nil {
        addConstraints(resizeConstraints)
      }
    }
  }
}
let imageView = ResizableImageView(frame: .zero)
imageView.translatesAutoresizingMaskIntoConstraints = false

view.addSubview(imageView)

// These are only illustrative constraints
imageView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
imageView.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true

imageView.image = image
class ViewController: UIViewController {

  override func viewDidLoad() {
    super.viewDidLoad()

    downloadImage(
      fromURL: URL(string: "https://img.evbuc.com/https%3A%2F%2Fcdn.evbuc.com%2Fimages%2F33105753%2F184176199496%2F1%2Foriginal.jpg?h=200&w=450&rect=0%2C0%2C400%2C200&s=a92a5a03c153d312d682b2dfedd6a6ad")!,
      completionHandler: { [weak self] image in
        guard let self = self, let image = image else { return }

        let imageView = ResizableImageView(frame: .zero)
        imageView.translatesAutoresizingMaskIntoConstraints = false

        self.view.addSubview(imageView)

        imageView.centerXAnchor.constraint(equalTo: self.view.centerXAnchor).isActive = true
        imageView.centerYAnchor.constraint(equalTo: self.view.centerYAnchor).isActive = true

        imageView.image = image
      })
  }

  func downloadImage(fromURL url: URL, completionHandler: @escaping (UIImage?) -> Void) {
    let operationQueue = OperationQueue()

    operationQueue.addOperation {
      guard let data = try? Data(contentsOf: url) else {
        OperationQueue.main.addOperation {
          completionHandler(nil)
        }

        return
      }

      OperationQueue.main.addOperation {
        let image = UIImage(data: data)
        completionHandler(image)
      }
    }
  }
}
Set UIImage to UIImageView directly with kingfisher

Set UIImage to UIImageView directly with kingfisher


By : user2560197
Date : March 29 2020, 07:55 AM
it helps some times I want to setImage with UIImage directly and not from any Source, Resource. I already have my image and want to set it with caching to my imageView. , You can store already existing image in Kingfisher cache by:
code :
let image: UIImage = //...
ImageCache.default.store(image, forKey: cacheKey)
cache.retrieveImage(forKey: "cacheKey") { result in
    switch result {
    case .success(let value):
        print(value.cacheType)

        // If the `cacheType is `.none`, `image` will be `nil`.
        print(value.image)

    case .failure(let error):
        print(error)
    }
}
class LatexCell: UICollectionViewCell {
    @IBOutlet var formulaImageView: UIImageView!
    private var imageKey: String?

    func setup(with imageKey: String) {
        self.imageKey = imageKey
        ImageCache.default.retrieveImage(forKey: imageKey) { [weak self] result in
            guard self?.imageKey == imageKey else { return } // cell have been reused
            switch result {
            case .success(let value):
                self?.formulaImageView.image = value.image

            case .failure(let error):
                break /// no image stored, you should create new one
            }
        }
    }

    override func prepareForReuse() {
        super.prepareForReuse()
        imageKey = nil
        formulaImageView.image = nil // Probably want here placeholder image
    }
}   
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