CODEWITHSUNDEEP
xcodemultithreadingwebasynchronousservice
indiejonesjunior
indiejonesjunior

Reputation: 28

Calling async web service using Xcode

I'm planning on using a web service call from Xcode and need it to be performant. Do I call the service from a background thread and then update the UI on another thread?

Upvotes: 0

Views: 45

Answers (1)

guard working else panic
guard working else panic

Reputation: 359

I think this should work for your purposes (written in Swift):

// Go to an asynchronous thread
// .userInitiated quality of service for a high-priority task
DispatchQueue.global(qos: .userInitiated).async { [weak self] in
  // Make sure you have a reference to self if you need it here
  guard let self = self else {
    return
  }

  // Make your asynchronous web service call here

  // Now return to the main thread
  DispatchQueue.main.async { [weak self] in
    // Make sure you have a reference to self if you need it here
    guard let self = self else {
      return
    }

    // Update your UI here
  }
}

For more on DispatchQueue and the different qualities of service, I recommend this tutorial.

Upvotes: 1

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