CIFilter output image nil

by

You cannot call UIImage(CIImage:) and use that UIImage as the image of a UIImageView. UIImageView requires a UIImage backed by a bitmap (CGImage). A UIImage instantiated with CIImage has no bitmap; it has no actual image, it’s just a set of instructions for applying a filter. That is why your UIImageView’s image is nil.

More Related Contents:

  1. Why can’t I invert my image back to original with CIFilter in my Swift iOS app
  2. How to apply a Vignette CIFilter to a live camera feed in iOS?
  3. How can I generate a barcode from a string in Swift?
  4. String extensions toDate() is crash some device
  5. How to get the indexpath.row when an element is activated?
  6. How to return value from Alamofire
  7. How do I add text to an image in iOS Swift?
  8. Swift GET request with parameters
  9. How to iterate for loop in reverse order in swift?
  10. How do I write dispatch_after GCD in Swift 3, 4, and 5?
  11. Shift elements in array by index
  12. Drop-Down List in UITableView in iOS
  13. Drawing class drawing straight lines instead of curved lines
  14. Use multiple font colors in a single label
  15. Create a rectangle with just two rounded corners in swift?
  16. How to I import 3rd party frameworks into Xcode Playground?
  17. Ordered map in Swift
  18. iOS 8 Auto cell height – Can’t scroll to last row
  19. custom font not working programmatically in swift
  20. Swift 3.1 deprecates initialize(). How can I achieve the same thing?
  21. UITabBar items jumping on back navigation on iOS 12.1
  22. Add swipe to delete UITableViewCell
  23. Open PDF file using swift
  24. How can I programmatically find Swift’s version?
  25. Dynamically increase height of UILabel & TableView Cell?
  26. Default tab bar item colors using swift Xcode 6
  27. How to have a dynamic List of Views using SwiftUI
  28. How to catch all iOS Push Notifications with different user actions including tap on app icon
  29. How to get animated polyline route in GMSMapView, so that it move along with map when map is moved?
  30. Warning: UICollectionViewFlowLayout has cached frame mismatch for index path ‘abc’

Leave a Comment