Stop query if there Is an error (Parse.com) - swift

Question

At the moment the app it crashing if there is no internet connection when running the query. How do I tell the query to stop if there is an error and prevent this?
Thanks
Error Below:
Error: Error Domain=NSURLErrorDomain Code=-1009 "The Internet connection appears to be offline." UserInfo=0x1702e0d80 {NSUnderlyingError=0x1742569e0 "The Internet connection appears to be offline.", NSErrorFailingURLStringKey=https://api.parse.com/2/find, NSErrorFailingURLKey=https://api.parse.com/2/find, _kCFStreamErrorDomainKey=12, _kCFStreamErrorCodeKey=8, NSLocalizedDescription=The Internet connection appears to be offline.} (Code: 100, Version: 1.2.21)
2014-12-01 20:36:39.257 AppName[5903:999805] Network connection failed. Making attempt 2 after sleeping for 1.546502 seconds.

Answer 1

In parse there you can handle errors for many things.
I think to stop a query if there is not internet connection you can use kPFErrorConnectionFailed
Ex.
var query = PFQuery()
query.findObjectsInBackgroundWithBlock{
(success:Bool!, error:NSError!)-> Void in
if (error == nil) {
//continue query
}
else{
if(error.code == kPFErrorConnectionFailed) {
//handle error
}
}
}