Swift - Populating an array with NSDictionary String data - arrays

Question

I have successfully set up a session to pull json data from a site - it works. However, when I start to populate my array with the data the array is not populating the information. Please help.
Here is my Person class:
class Person {
var name1 = "name"
var info1 = "info"
init(name1: String, info1: String) {
self.name1 = name1
self.info1 = info1
}
}
Here is my setUpPerson function:
func setUpPerson() {
let url = NSURL(string: "http://www.my-sites-jsondata")
if url != nil {
let task = NSURLSession.sharedSession().dataTaskWithURL(url!, completionHandler: { (data, response, error) -> Void in
let urlError = false
if error == nil {
var urlContent = NSString(data: data!, encoding: NSUTF8StringEncoding) as NSString!
var data: NSData = urlContent.dataUsingEncoding(NSUTF8StringEncoding)!
do {
let jsonObject = try (NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as? NSArray)!
var index1 = 0
while index1 < jsonObject.count {
var maindata = (jsonObject[index1] as! NSDictionary)
var nameA = maindata["Name"] as! String
var infoA = maindata["Info"] as! String
var data1 = Person(name1: nameA, info1: infoA)
self.arrayOfPersons.append(data1)
index1++
}
} catch {
print(urlError)
}
}
})
task.resume()
}
}

Answer 1

Your code looks all good to me.
To me your self.arrayOfPersons is also being set (I just tested it with my test app).
You're probably attempting to print it before it's been set in the async dataTaskWithURL block.
An async block performs in the background, so as the code written immediately after your block executes on the main thread, the code within the async block will not yet be complete.
To me, the code has definitely executed. But because the async code hasn't finished executing yet, you are not seeing it set.
You will have to wait until after the async code executes before checking for the new value.
You can try like this:
dispatch_async(dispatch_get_main_queue(), ^{
// Set your data on property here
});

Answer 2

I was able to successfully complete this project. The answer came in two fold...
I needed dispatch_async(dispatch_get_main_queue()
reloadData()