JSON result (NSArray): valueForKey doesn't work as expected - swift

Question

I have a NSArray as a result of a web service (JSON) request.
If I print NSLog("%#", jsonResult) the Array it shows up correctly:
(
{
text = “Some text”;
coordinates = “11.333345 - 09.33349”;
}
{
text = “Some text2”;
coordinates = “11.333345 - 09.33349”;
}
{
text = “Some text3”;
coordinates = “11.333345 - 09.33349”;
}
…
)
But If I try to access the value of the key "text" of each entry within the NSArray with my following function, I always get an output like this:
Text )r'ì• (instead of "Some text2, 3 ....")
So I think there is a mismatch of types, but I don't know how to figure out where the problem is.
In Objective-C it works very well.
func getResult(){
self.webService.getResult({ jsonResult in
jsonResult!.enumerateObjectsUsingBlock({ object, index, stop in
var txt : NSString = object.valueForKey("text") as NSString
NSLog("Text %s", txt)
})
NSLog("Ready %#", jsonResult!)
});
}
Any ideas what's going wrong?
UPDATE 1
I figured out, that if I just use NSObject instead of NSString it displays the text correct
var txt : NSObject = object.valueForKey("text") as NSObject
NSLog("%#", txt)
But anyway, I have to cast that NSObject object to NSString or String, to display...
Which encoding is it expecting to display the string...or how to cast this NSObject????

Answer 1

var txt : NSString = object.valueForKey("text") as NSString
NSLog("Text %s", txt)
The problem is the %s format specifier, which is for C-style strings. You need %#, which is for objects.
In Swift, it's recommended to use println(), which does away with format strings altogether:
var txt : NSString = object.valueForKey("text") as NSString
println("Text \(txt)")