HOW to add contents in picker view from json alamofire ,I want to pick the visitortypes as picker view so that i want to fetch it in an array

Question

"communityVisitorTypeList" : [
    {
      "VisitorTypeID" : 1,
      "VisitorTypeImage" : null,
      "VisitorType" : "HouseKeeping"
    },
    {
      "VisitorTypeID" : 2,
      "VisitorTypeImage" : null,
      "VisitorType" : "Driver"
    },
    {
      "VisitorTypeID" : 3,
      "VisitorTypeImage" : null,
      "VisitorType" : "Taxi"
    },
    {
      "VisitorTypeID" : 4,
      "VisitorTypeImage" : null,
      "VisitorType" : "Delivery"
    },
    {
      "VisitorTypeID" : 5,
      "VisitorTypeImage" : null,
      "VisitorType" : "Guest"
    },
    {
      "VisitorTypeID" : 6,
      "VisitorTypeImage" : null,
      "VisitorType" : "Service"
    }
  ]
} 

This is what I have tried:

Alamofire.request(urltype, method: .get, parameters: parameters as Parameters, encoding: URLEncoding.default, headers:headers).responseJSON
{ (response ) in
    if(response.result.isSuccess) {
        let swiftyJsonVar = try? JSON(data: response.data!)
        print(swiftyJsonVar!)
        let resultarray = swiftyJsonVar!["responseData"].stringValue

        //This line of code covert String into JSON.
        let responseDataValue = JSON(parseJSON: resultarray)

        print( "this is:   \(responseDataValue) ")
    }
}

I have to get the visitor type in an array to show in picker

Answer 1

Here you go (looking at your post and comments, you said " Actualy i want to fetch the data from this json to the array "

If you need to use this data on a different screen or class easily. Simply declare this

class myViewControoler: UIViewController {
struct communityVisitorTypeList
{
static var communityVisitorTypeListCount = 0
 static var VisitorTypeID = [String]()
static var VisitorTypeImage = [String]()
static var VisitorType = [String()

}


}

Now on your Api Call , use this

AF.request(urlString,method: .post, parameters: Parameters, encoding: URLEncoding.default, headers:headers).responseString{
switch response.result {
case let .success(value):
    let jsonData = value.data(using: .utf8)!
    let json = try? JSON(data: jsonData)
    let vistorTypeCount = json?["communityVisitorTypeList"].count
    communityVisitorTypeList.communityVisitorTypeListCount =  
    for i in (0..<vistorTypeCount)
    {
     communityVisitorTypeList.VisitorType.append(json?["vistorTypeCount"][i]["VisitorType").string ?? ""
  }
case let .failure(error):print(error);

    break
    }

You can use this array on the same class by simply calling

communityVisitorTypeList.VisitorType

and if you want to call it in a different class/view

myViewControoler.communityVisitorTypeList.VisitorType

Now to fetch values from this array, you could write any function and call by communityVisitorTypeList.VisitorType[1] or 2 or 3 or with for loop !

set your datasource n delegate

yourPicker.dataSource = self yourPicker.delegate = self

now to call your functions

func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int{
    return 1
}

func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int{
    return communityVisitorTypeList.communityVisitorTypeListCount
}

func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
    return communityVisitorTypeList. VisitorType[row]
}

func pickerView(pickerView: UIPickerView!, didSelectRow row: Int, inComponent component: Int){
    print(communityVisitorTypeList. VisitorType[row])
}

Hope it helps. Also please use search function.