nearby places swift 2 error - swift2

Question

I work on a ios application that requires to use nearby places api from google. It worked very well with swift but now , when i updated my xcode to xcode 7 and it changed from swift to swift 2 it doesn't work anymore. I am stuck with this , any help will be apreciated .
Here is the request for the api :
func fetchPlacesNearCoordinate(coordinate: CLLocationCoordinate2D, radius: Double, name : String){
var urlString = "https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=\(44.942149),\(26.02453)&radius=\(radius)&types=food"
urlString += "&key=\(apiServerKey)"
urlString = urlString.stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding)!
if placesTask.taskIdentifier > 0 && placesTask.state == .Running {
placesTask.cancel()
}
UIApplication.sharedApplication().networkActivityIndicatorVisible = true
do{
//******************Here's the line that displays error
placesTask = session.dataTaskWithURL(NSURL(string: urlString)!) {
(data, response, error) -> Void in
UIApplication.sharedApplication().networkActivityIndicatorVisible = false
//var placesArray = [GooglePlace]()
do {
if let json = try NSJSONSerialization.JSONObjectWithData(data!, options:[]) as? NSDictionary {
if let results = json["results"] as? NSArray {
for rawPlace:AnyObject in results {
print(rawPlace)
var placename = ""
if let name = rawPlace["name"] as? NSString {
placename = name as String
}
}
}
}
} catch {
//handle error
}
/*dispatch_async(dispatch_get_main_queue()) {
completion(placesArray)
}*/
}
}catch{
}
placesTask.resume()
}
And the errors i get :
2015-10-02 16:57:54.586 QR Code[4331:67414] -[NSURLSessionDataTask taskIdentifier]: unrecognized selector sent to instance 0x7fe791c3b840
2015-10-02 16:57:54.591 QR Code[4331:67414] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSURLSessionDataTask taskIdentifier]: unrecognized selector sent to instance 0x7fe791c3b840'
*** First throw call stack:(
0 CoreFoundation 0x0000000111a8ef65 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x0000000111506deb objc_exception_throw + 48
2 CoreFoundation 0x0000000111a9758d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x00000001119e4f7a ___forwarding___ + 970
4 CoreFoundation 0x00000001119e4b28 _CF_forwarding_prep_0 + 120
5 QR Code 0x000000010f57b3ff _TFC7QR_Code17MapViewController25fetchPlacesNearCoordinatefS0_FTVSC22CLLocationCoordinate2D6radiusSd4nameSS_T_ + 1215
6 QR Code 0x000000010f57bfd3 _TFC7QR_Code17MapViewController11viewDidLoadfS0_FT_T_ + 1555
7 QR Code 0x000000010f57c552 _TToFC7QR_Code17MapViewController11viewDidLoadfS0_FT_T_ + 34
8 UIKit 0x00000001122ae931 -[UIViewController loadViewIfRequired] + 1344
9 UIKit 0x00000001122b4923 -[UIViewController __viewWillAppear:] + 120
10 UIKit 0x00000001122e418a -[UINavigationController _startCustomTransition:] + 1177
11 UIKit 0x00000001122f37c7 -[UINavigationController _startDeferredTransitionIfNeeded:] + 712
12 UIKit 0x00000001122f467d -[UINavigationController __viewWillLayoutSubviews] + 57
13 UIKit 0x000000011248c63d -[UILayoutContainerView layoutSubviews] + 248
14 UIKit 0x00000001121d411c -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 710
15 QuartzCore 0x000000010fe7536a -[CALayer layoutSublayers] + 146
16 QuartzCore 0x000000010fe69bd0 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 366
17 QuartzCore 0x000000010fe69a4e _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
18 QuartzCore 0x000000010fe5e1d5 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 277
19 QuartzCore 0x000000010fe8b9f0 _ZN2CA11Transaction6commitEv + 508
20 UIKit 0x000000011211e1b6 _UIApplicationHandleEventQueue + 7183
21 CoreFoundation 0x00000001119bb0a1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
22 CoreFoundation 0x00000001119b0fcc __CFRunLoopDoSources0 + 556
23 CoreFoundation 0x00000001119b0483 __CFRunLoopRun + 867
24 CoreFoundation 0x00000001119afe98 CFRunLoopRunSpecific + 488
25 GraphicsServices 0x0000000115770ad2 GSEventRunModal + 161
26 UIKit 0x0000000112123676 UIApplicationMain + 171
27 QR Code 0x000000010f5782bd main + 109
28 libdyld.dylib 0x0000000113dd192d start + 1)
libc++abi.dylib: terminating with uncaught exception of type NSException

Answer 1

Please do not call the Places API Web Services directly from a mobile device - it opens up the potential for external parties to steal your API key from your application. Please follow the Proxy Server pattern laid out in this tutorial by Ray Wenderlich's team.