CODEWITHSUNDEEP
iosjsonweb-servicesswiftnsdictionary
f1rstsurf
f1rstsurf

Reputation: 647

Could not cast value of type '__NSArrayM' (0x34df0900) to 'NSDictionary' SWIFT

When decoding JSON response from webservice I get an error saying:

Could not cast value of type '__NSArrayM' (0x34df0900) to 'NSDictionary'

I tried out so many solutions found in StackOverflow too, but nothing works.

My Code : 

let jsonData:NSDictionary = (NSJSONSerialization.JSONObjectWithData(urlData!, options:NSJSONReadingOptions.MutableContainers , error: &error) as? NSDictionary)!

let success:NSInteger = jsonData.valueForKey("success") as! NSInteger

Response from the Web Service:

[
    {
        "id": "1",
        "title": "bmw",
        "price": "500.00",
        "description": "330",
        "addedDate": "2015-05-18 00:00:00",
        "user_id": "1",
        "user_name": "CANOVAS",
        "user_zipCode": "32767",
        "category_id": "1",
        "category_label": "VEHICULES",
        "subcategory_id": "2",
        "subcategory_label": "Motos",
        "bdd": {}
    }
]

Thank you for your help

Upvotes: 13

Views: 21601

Answers (3)

Francis Jervis
Francis Jervis

Reputation: 181

This will happen if you miss a "level" reading the logs. I was encountering this error, tried casting to an NSArray instead of NSMutableDictionary as here Swift JSON error, Could not cast value of type '__NSArrayM' (0x507b58) to 'NSDictionary' (0x507d74)

The actual contents of the object were inside an NSDictionary at index 0 of that array. Try with this code (including some log lines to illustrate)

        let dataDict = NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers, error: &error)

        println(dataDict)

        let contents = dataDict!.objectForKey("rows") as! NSMutableArray

        println(contents)

        println( "contents is = \(_stdlib_getDemangledTypeName(contents))")

        let innerContents = contents[0]

        println(innerContents)

        println( "inner contents is = \(_stdlib_getDemangledTypeName(innerContents))")

        let yourKey = innerContents.objectForKey("yourKey") as? String
        println(yourKey)

Upvotes: 3

allbto
allbto

Reputation: 169

Use SwiftyJSON : https://github.com/SwiftyJSON/SwiftyJSON

let json = JSON(data: urlData!)

And if success is in the array

if let success = json[0]["success"].int {
     //Now you got your value
}

Or if success is not in the array

if let success = json["success"].int {
     //Now you got your value
}

You can also check success value

if let success = json["success"].int where success == 1 {
     // Now you can do stuff
}

Upvotes: 5

Randika Vishman
Randika Vishman

Reputation: 8124

Try replacing following line:

let jsonData:NSDictionary = (NSJSONSerialization.JSONObjectWithData(urlData!, options:NSJSONReadingOptions.MutableContainers , error: &error) as? NSDictionary)!

With following:

let jsonData:NSArray = (NSJSONSerialization.JSONObjectWithData(urlData!, options:NSJSONReadingOptions.MutableContainers , error: &error) as? NSArray)!

I hope this will help you!

Cheers!

Upvotes: 12

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