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iosswiftswift2nsjsonserializationjsonobjectrequest

How to create RequestManager class without using frameworks swift


I have created 5 classes which includes ProfileHomeModel, ProfileLocationModel, ProfileRequestManager, ProfileTableUserViewController and ProfileTableViewCell. My goal is to parse json correctly and display the data. I have run into a problem in my request manager class. I am totally new to swift. I would like to do this without using swiftyJSON and Alamofire.

import Foundation
class ProfileRequestManager{


    let urlPath = "*********"

    let url = NSURL(string: urlPath)
    let data = NSData(contentsOfURL: url!)

    do {
        let jsonData = try NSJSONSerialization.JSONObjectWithData(data!, options: .AllowFragments) as? NSDictionary

        print(jsonData)
        let results = jsonData!.objectForKey("strengths") as? [NSDictionary] ?? []

    for result in results {
        print(result)
    }


    }
    catch {
        print("Something went wrong while parsing json data fetched from the API")
    }


}

jsonData

{ "success": true, "profile": { "firstname": "Vignesh", "lastname": "Krish", "title": "Software Developer Intern", "designations": null, "specialty": "Computer Science", "location": "0", "email": "vignesh@ampthealth.com", "phone": "4026136265", "biography": "Boxing and Travelling", "interests": "Watching movies", "skills": "Hozier and A.R Rahman", "goals": "becoming a software developer", "mentors": "Hardik Patel", "doh": "2016-05-09", "dob": "1994-06-08", "strengths": [ { "id": "4", "name": "Analytical", "description": "People exceptionally talented in the Analytical theme search for reasons and causes. They have the ability to think about all the factors that might affect a situation.", "color": "9c0000" }, { "id": "17", "name": "Focus", "description": "People exceptionally talented in the Focus theme can take a direction, follow through, and make the corrections necessary to stay on track. They prioritize, then act.", "color": "5c3a6e" }, { "id": "8", "name": "Communication", "description": "People exceptionally talented in the Communication theme generally find it easy to put their thoughts into words. They are good conversationalists and presenters.", "color": "da892f" }, { "id": "29", "name": "Responsibility", "description": "People exceptionally talented in the Responsibility theme take psychological ownership of what they say they will do. They are committed to stable values such as honesty and loyalty.", "color": "5c3a6e" }, { "id": "30", "name": "Restorative", "description": "People exceptionally talented in the Restorative theme are adept at dealing with problems. They are good at figuring out what is wrong and resolving it.", "color": "5c3a6e" } ], "settings": { "enable_sms": "0" } } }

I'm trying to return all of it above

the error I'm getting is on the do catch. Xcode is giving me an expected declaration error. I checked my curly braces.

Would appreciate some help to figure this out.

Also, I need not include to url for security purposes. I hope it helps.

I am also trying to display all the values in separate cells. This is what I have now.

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {


    if indexPath.row == 0 {

        let cell = tableView.dequeueReusableCellWithIdentifier("ProfileCell", forIndexPath: indexPath) as! ProfileUserTableViewCell
        cell.firstName?.text = firstName
        cell.lastName?.text = lastName
        cell.title?.text = title

        return cell

}
}

Do you know how I can fix this?

this is my current situation. I can't get it to display on table view cells. The problem seems to be with how I'm assigning my json values to the labels.

import UIKit

class ProfileUserTableViewController: UITableViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    tableView.reloadData()
    //retrieving json from server

    let requestURL: NSURL = NSURL(string: "https:******************")!

    //Your baseURL
    let urlRequest: NSMutableURLRequest = NSMutableURLRequest(URL: requestURL)
    let session = NSURLSession.sharedSession()
    let task = session.dataTaskWithRequest(urlRequest) {
        (data, response, error) -> Void in

        let httpResponse = response as! NSHTTPURLResponse
        let statusCode = httpResponse.statusCode

        if (statusCode == 200) {
            print("Everyone is fine")

            do {
                let JSON = try NSJSONSerialization.JSONObjectWithData(data!, options:NSJSONReadingOptions(rawValue: 0))
                guard let JSONDictionary :NSDictionary = JSON as? NSDictionary else {
                    print("Not a Dictionary")

                    return
                }
                //  print("JSONDictionary! \(JSONDictionary)")

                if let profile = JSONDictionary["profile"] as? NSDictionary {
                    print(profile)
                    //This is where we should begin parsing json into whatever you want to
                    let firstName = profile["firstName"] as? String
                    let lastName = profile["lastName"] as? String
                    let title = profile["title"] as? String

                    print(firstName!, lastName, title!)

                    //                        let settings = profile["settings"] as? NSDictionary
                    //
                    //                        let enableSMS = settings!.valueForKey("enable_sms") as? String
                    //                        print(enableSMS!)

                    //to parse commentTotals content from api
                    let commentTotals = profile["commentTotals"] as? NSArray
                    for eachItem in commentTotals! {
                        let total = eachItem.valueForKey("total") as? String
                        let id = eachItem.valueForKey("id") as? String
                        print(total!,id!)

                    }

                    //to parse strength contents from api
                    let strengths = profile["strengths"] as? NSArray
                    for eachItem in strengths! {
                        let color = eachItem.valueForKey("color") as? String
                        let description = eachItem.valueForKey("description")
                        let id = eachItem.valueForKey("id")
                        let name = eachItem.valueForKey("name")
                        print(name!, description!, color!, id!)
                    }
                }
            }
            catch let JSONError as NSError {
                print("\(JSONError)")
            }
        }
    }

    task.resume()


    // Uncomment the following line to preserve selection between presentations
    // self.clearsSelectionOnViewWillAppear = false

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
    // self.navigationItem.rightBarButtonItem = self.editButtonItem()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

// MARK: - Table view data source

override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    // #warning Incomplete implementation, return the number of sections
    return 1
}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete implementation, return the number of rows
    return 4
}

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    if indexPath.row == 0 {

    let cell = tableView.dequeueReusableCellWithIdentifier("ProfileCell", forIndexPath: indexPath) as! ProfileUserTableViewCell

        cell.firstName?.text = [indexPath.row].firstName
        cell.lastName?.text =  [indexPath.row].lastName
        cell.title?.text =  [indexPath.row].title



        return cell

    }

    if indexPath.row == 1 {

        let cell = tableView.dequeueReusableCellWithIdentifier("ProfileCell2", forIndexPath: indexPath) as! ProfileUserTableViewCell

        cell.score?.text = [indexPath.row].score
        cell.received?.text =  [indexPath.row].received
        cell.given?.text =  [indexPath.row].given
        return cell

    }
    if indexPath.row == 2 {

        let cell = tableView.dequeueReusableCellWithIdentifier("ProfileCell3", forIndexPath: indexPath) as! ProfileUserTableViewCell
        cell.coreValueComments1?.text = [indexPath.row].total
        cell.coreValueComments2?.text = [indexPath.row].total
        cell.coreValueComments3?.text = [indexPath.row].total
        cell.coreValueComments4?.text = [indexPath.row].total


        return cell

    }

     else {

        let cell = tableView.dequeueReusableCellWithIdentifier("ProfileCell4", forIndexPath: indexPath) as! ProfileUserTableViewCell
        cell.strength1?.text = [indexPath.row].name
        cell.strength2?.text = [indexPath.row].name
        cell.strength3?.text = [indexPath.row].name
        cell.strength4?.text = [indexPath.row].name



        return cell

    }

}



}

Solution

  • Here is a small try of what you can do to serialize your json. I implemented the following code inside a viewDidLoad()block to successfully print json data in the xcode console.

     let requestURL: NSURL = NSURL(string: "https://*******************")!
        //Your baseURL 
        let urlRequest: NSMutableURLRequest = NSMutableURLRequest(URL: requestURL)
        let session = NSURLSession.sharedSession()
        let task = session.dataTaskWithRequest(urlRequest) {
            (data, response, error) -> Void in
    
            let httpResponse = response as! NSHTTPURLResponse
            let statusCode = httpResponse.statusCode
    
            if (statusCode == 200) {
                print("Everyone is fine")
    
                do {
                    let JSON = try NSJSONSerialization.JSONObjectWithData(data!, options:NSJSONReadingOptions(rawValue: 0))
                    guard let JSONDictionary :NSDictionary = JSON as? NSDictionary else {
                        print("Not a Dictionary")
    
                        return
                    }
                  //  print("JSONDictionary! \(JSONDictionary)")
    
                    if let profile = JSONDictionary["profile"] as? NSDictionary {
                        print(profile)
    
    
                        //This is where we should begin parsing json into whatever you want to
    
                 let biography = profile["biography"] as? String
                        let designations = profile["designations"] as? String
                        let dob = profile["dob"] as? String
                        let doh = profile["doh"] as? String
                        let email = profile["email"] as? String
                        // do the same for firstname, goals, interests, lastname, location, mentors, phone, skills, speciality
    
                        print(biography!, designations, dob!)
    
                        let settings = profile["settings"] as? NSDictionary
    
                            let enableSMS = settings!.valueForKey("enable_sms") as? String
                            print(enableSMS!)
    
                        let strengths = profile["strengths"] as? NSArray
                        for eachItem in strengths! {
                            let color = eachItem.valueForKey("color") as? String
                            let description = eachItem.valueForKey("description")
                            let id = eachItem.valueForKey("id")
                            let name = eachItem.valueForKey("name")
                            print(name!, description!, color!, id!)
                        }
    
    
    
    
                    }
                }
                catch let JSONError as NSError {
                    print("\(JSONError)")
                }
    
    
    
            }
        }
    
        task.resume()
    

    I hope this helps you. Play around with arrays and dictionaries, and you will be able to pull all the values from your API.