iOS - Map a root JSON array with ObjectMapper in swift

I finally solve my problem :

The mapping method in the controller should be

let json : AnyObject! = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &error)if (error != nil) {    return completionHandler(nil, error)} else {    var customer = Mapper<Customer>().mapArray(json)! //Swift 2    var customer = Mapper<Customer>().mapArray(JSONArray: json)! //Swift 3}

If it can help someone.

Using JSONObjectWithData(::) with the correct conditional downcasting type

Your JSON is of type [[String: AnyObject]]. Therefore, with Swift 2, you can use JSONObjectWithData(::) with a conditional downcasting of type [[String: AnyObject]] in order to prevent using NSArray or AnyObject!:

do {    if let jsonArray = try NSJSONSerialization        .JSONObjectWithData(data, options: []) as? [[String: AnyObject]] {        /* perform your ObjectMapper's mapping operation here */    } else {        /* ... */    }}catch let error as NSError {    print(error)}

Mapping to Customer using mapArray(:) method

The ObjectMapper's Mapper class provides a method called mapArray(:) that has the following declaration:

public func mapArray(JSONArray: [[String : AnyObject]]) -> [N]?

The ObjectMapper documentation states about it:

Maps an array of JSON dictionary to an array of Mappable objects

Thus, your final code should look something like this:

do {    if let jsonArray = try NSJSONSerialization        .JSONObjectWithData(data, options: []) as? [[String: AnyObject]] {        let customerArray = Mapper<Customer>().mapArray(jsonArray)        print(customerArray) // customerArray is of type [Customer]?    } else {        /* ... */    }}catch let error as NSError {    print(error)}

Mapping to Customer using map(:) method

The ObjectMapper's Mapper class provides a method called map(:) that has the following declaration:

func map(JSONDictionary: [String : AnyObject]) -> N?

The ObjectMapper documentation states about it:

Maps a JSON dictionary to an object that conforms to Mappable

As an alternative to the previous code, the following code shows how to map your JSON to Customer using map(:):

do {    if let jsonArray = try NSJSONSerialization        .JSONObjectWithData(data, options: []) as? [[String: AnyObject]] {        for element in jsonArray {            let customer = Mapper<Customer>().map(element)            print(customer) // customer is of type Customer?        }    } else {        /* ... */    }}catch let error as NSError {    print(error)}

The easiest solution is provided by AlamofireObjectMapper. Use the responseArray() convenience method:

Alamofire.request(endpoint).responseArray { (response: DataResponse<[MyMappableClass]>) in            if let result = response.result.value {                // Customer array is here            } else if let error = response.result.error {                // Handle error            } else {                // Handle some other not networking error            }        }