show image from url in swift

To show an image from a URL in Swift, follow these steps:

Create a URL object with the URL of the image you want to load.


main.swift
guard let url = URL(string: "https://example.com/image.png") else { return }
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Create a URLSession object to download the image data.


main.swift
let session = URLSession.shared
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Create a data task with the URL and implement the completion handler to handle the image data.


main.swift
let dataTask = session.dataTask(with: url) { (data, response, error) in
    if let error = error {
        print("Error: \(error.localizedDescription)")
        return
    }
    
    if let data = data, let image = UIImage(data: data) {
        // handle the image
    }
}
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Start the data task.


main.swift
dataTask.resume()
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Handle the image by updating a UIImageView with the loaded image.


main.swift
DispatchQueue.main.async {
    imageView.image = image
}
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Putting it all together in a function:


main.swift
func loadAndShowImage(from urlString: String, into imageView: UIImageView) {
    guard let url = URL(string: urlString) else { return }
    
    let session = URLSession.shared
    
    let dataTask = session.dataTask(with: url) { (data, response, error) in
        if let error = error {
            print("Error: \(error.localizedDescription)")
            return
        }
        
        if let data = data, let image = UIImage(data: data) {
            DispatchQueue.main.async {
                imageView.image = image
            }
        }
    }
    
    dataTask.resume()
}
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You can call this function passing a URL string and a UIImageView to display the loaded image:


main.swift
loadAndShowImage(from: "https://example.com/image.png", into: imageView)
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