iOS/Objective-C equivalent of Android's AsyncTask

Question

I\'m familiar with using AsyncTask in Android: create a subclass, call execute on an instance of the subclass and onPostExecute is cal

Answer 1

Swift 3

In Android when I wanted to run a task on a background thread and then update the UI when it finished, I used AsyncTask (example). Now when I am making iOS versions of my apps, I use Grand Central Dispatch (GCD) to do the same thing. Here is how it is done with Swift:

DispatchQueue.global(qos: .background).async {

    // code to be run on a background task

    DispatchQueue.main.async {

        // code to be run on the main thread after the background task is finished
    }
}

Notes

• Grand Central Dispatch Tutorial for Swift