Could not cast value of type 'NSNull' to 'NSString' in parsing Json in swift

Question

I have the following class

class BannerResponse : NSObject{

    let  URL                = \"Url\";
    let  CONTACT_NO         = \"ContactNo\";
    let  IMAGE          


        

Answer 1

You are getting null values for some of your keys. They get mapped to NSNull by NSJSONSerialization.

You need to do several things

Change all your variables (url, contactNo, etc) to optionals:

var url:String?
var contactNo:String?

Change all of your assignments to use ? instead of !:

url = noNulls[URL] as? String
contactNo = noNulls[CONTACT_NO] as? String

And finally, make your code handle nil values for all of your variables. (But do not use !. That path leads to crashes.)