Swift Question
NSURL returns nil
Here is my URL:
let urlString = "https://example.com/img/list/mobile/7156-292.jpg"
When I pass it to
NSURL(string: urlString )nilI also tried using all
addingPercentEncodingFYI: using this urlString
"https://new.domain.com/img/notFound.jpg"Any idea what I am doing wrong?
Real code:
let imageCache = NSCache<AnyObject, AnyObject>()
class CustomImageView: UIImageView {
var imageUrlString : String?
var activityIndicatorView : NVActivityIndicatorView?
func loadImageUsingUrlString (urlString : String , activityIndicatorFrame : CGRect , activityIndicatorColor :UIColor){
imageUrlString = urlString;
activityIndicatorView = NVActivityIndicatorView(frame: activityIndicatorFrame,type: NVActivityIndicatorType(rawValue: 29)!)
if let url = URL(string: urlString as String){
let request = URLRequest(url:url as URL)
image = nil;
activityIndicatorView?.color = activityIndicatorColor
self.addSubview(activityIndicatorView!)
activityIndicatorView?.startAnimating();
if let imageFromCache = imageCache.object(forKey: urlString as AnyObject) as? UIImage{
self.activityIndicatorView?.stopAnimating();
for view in self.subviews{
view.removeFromSuperview()
}
self.image = imageFromCache
return;
}
URLSession.shared.dataTask(with: request, completionHandler: { (data, response, error) in
if error != nil {
return ;
}
DispatchQueue.main.async{
if let imageData = data{
let imageToCache = UIImage(data: imageData)
if self.imageUrlString == urlString {
self.activityIndicatorView?.stopAnimating();
for view in self.subviews{
view.removeFromSuperview()
}
self.image = imageToCache
}
if imageToCache != nil{
imageCache.setObject(imageToCache!, forKey: urlString as AnyObject)
}else{
self.image = UIImage(named:"Keylead");
}
self.activityIndicatorView?.stopAnimating();
}
}
}).resume()
}else {
print("Convert urlString: \(urlString) returns nil")
self.image = UIImage(named: "notFound")
}
}
}
Below is what I am getting:
Convert urlString: https://example.com/images/list/mobile/23060-8.jpg returns nil
Convert urlString: https://example.com/images/list/mobile/49012-8.jpg returns nil
Convert urlString: https://example.com/images/list/mobile/49014-8.jpg returns nil
Convert urlString: https://example.com/images/list/mobile/7156-188.JPG returns nilThe function call is happening inside a custom cell. I assume this amount of code would be enough for you guys since I get the
urlString printedelse
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Answer Source
Your updated output explains your issue. There is a newline character at the end of urlString. You need to cleanup the string from wherever you are obtaining those URLs.
let cleanURL = badURL.trimmingCharacters(in: . whitespacesAndNewlines)
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