How to run synchronically two functions with async operations on iOS using Swift

Question

lets propose this scenario

a method with async network operations

func asyncMethodA() -> String?
{
   result : String?
   Alamofire.manager.request(.P         


        

Answer 1

With the below, you can launch both async methods at the same time and do your heavy lifting after whichever one finishes last.

var methodAFinished = false
var methodBFinished = false

func asyncMethodA() -> String?
{
    Alamofire.manager.request(.POST, "https://www.apiweb.com/apimethod", parameters: parameters, encoding:.JSON)
        .response { (request, response, rawdata, error) in
            if (response?.statusCode == 200) {
                methodAFinished = true
                doStuff()
            }
        }
    return result //string
}

The guts of asyncMethodB would be methodBFinished = true; doStuff()

func doStuff() {
    if methodAFinished && methodBFinished {
        // do crazy stuff
    }
}