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Xcode – Swift HTTP Request Completion Block not Working Properly

I have a weird problem with HTTP requests in Swift. I have the following simple code:

let session = URLSession.shared
let url = URL(string: "https://jsonplaceholder.typicode.com/posts")!

let task = session.dataTask(with: url, completionHandler: { data, response, error in
    // Check the response
            print(error)
            print(response)
})
task.resume()

Running this code in a Xcode playground outputs the print statements. However, executing it in a standard Xcode project does not give any output.
I wonder if I am missing something in my code or if something is wrong with my Xcode setup.

Thanks in advance!

Edit:

Here’s a screenshot of Xcode
enter image description here

Tags:

2

Answers


  1. 0

    Looking at this screenshot –
    enter image description here

    It doesn’t seem like any part of your code is executing at all. There’s no entry point defined.

    You can try following –

    @main
struct NewApp {
    static func main() {
        // Paste all of your code here
        // Put breakpoints and inspect what you want
    }
}
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  2. 0

    As Tarun indicated, your executable is exiting before your call can be made. One way you can wait before exiting is to use a DispatchGroup like the following.

    let session = URLSession.shared
let url = URL(string: "https://jsonplaceholder.typicode.com/posts")!
let group = DispatchGroup()
group.enter()
let task = session.dataTask(with: url, completionHandler: { data, response, error in
    // Check the response
    print(error)
    print(response)
    group.leave()
})
task.resume()
group.wait()
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