Fetching data through Get request using Alamofire

In the previous section of the tutorial, we have installed Alamofire and set it up to make request to the application programming interface (API), which transmits data between the server and iOS application. In this section, we will see how we can fetch the data through Get request using Alamofire.

Get Request

Making a get request using alamofire is very simple. The request method of Alamofire is used for this purpose. The syntax is given below.

  Alamofire.request(“http://url.com/get”).responseJSON{ response      in       print(response.request)      print(response.result)      print(response.response)        if let result = response.result.value{      Print(result)      }  }  

While making get request using alamofire, we only need to have the API URL. On success, we get a response object using which we can get the response result value, which can be parsed in our response model.

Example

In this example, we will use an Apple dummy API URL https://itunes.apple.com/search?media=music&term=bollywood. Here, we will create an application, which contains a dynamic table view to display API data to the user. In this application, we will make a get request to the API and then populate the API data to the tableview.

Follow the steps given in the previous chapter to install Alamofire in the application and open the xcworkspace file. Create a MainViewController class and make a get request to print the API data using Alamofire.

MainViewController.swift

  import UIKit  import Alamofire      class ViewController: UIViewController {          override func viewDidLoad() {          super.viewDidLoad()          // Do any additional setup after loading the view.          loadJsonData()      }      func loadJsonData()      {         Alamofire.request(“https://itunes.apple.com/search?media=music&term=bollywood”).responseJSON { (response) in                          print(“Response.result.value (response.result.value!)”)          }      }  }  

The above application will print the response in the console, as shown below.

Here, the result count is coming to be 50. Here, we will create our interface builder using tableview to present this data.

Main.storyboard

In the storyboard file, we will add a tableview inside the UIViewController. Inside the Prototype cell, we will add an imageview and the labels to show the Collection Artist name, artist country, and artist name, respectively. We will assign the MainTableVIewCell subclass to this cell and create the respective outlets.

MainTableViewCell.swift

  import UIKit    class MainTableViewCell: UITableViewCell {      @IBOutlet weak var trackName: UILabel!      @IBOutlet weak var artistImgView: UIImageView!            @IBOutlet weak var artisName: UILabel!      @IBOutlet weak var artistCountry: UILabel!      override func awakeFromNib() {          super.awakeFromNib()          // Initialization code      }          override func setSelected(_ selected: Bool, animated: Bool) {          super.setSelected(selected, animated: animated)              // Configure the view for the selected state      }  }  

ViewController.swift

  import UIKit  import Alamofire      class ViewController: UIViewController {          @IBOutlet weak var tableView: UITableView!            var artist = [[String:Any]]()                  override func viewDidLoad() {          super.viewDidLoad()          // Do any additional setup after loading the view.          loadJsonData()          tableView.delegate = self          tableView.dataSource = self          //tableView.rowHeight = UITableView.automaticDimension      }      func loadJsonData()      {         Alamofire.request(“https://itunes.apple.com/search?media=music&term=bollywood”).responseJSON { (response) in              print(“Response value (response)”)                        print(“Response.result.value (response.result.value!)”)                    if let json = response.result.value as! [String:Any]?{              if let responseValue = json[“results”] as! [[String:Any]]?{                  self.artist = responseValue                  self.tableView.reloadData()              }          }          }      }  }      extension ViewController : UITableViewDataSource{      func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {          return artist.count      }            func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {          let cell = tableView.dequeueReusableCell(withIdentifier: “MainTableViewCell”) as! MainTableViewCell          if(artist.count > 0){              do{              let artistData = artist[indexPath.row]              cell.artistImgView.image = try UIImage(data: Data(contentsOf: URL(string: artistData[“artworkUrl60”] as! String) ?? URL(string: “http://www.google.com”)!))                  cell.trackName.text = artistData[“trackName”] as! String                  cell.artisName.text = artistData[“artistName”] as! String                  cell.artistCountry.text = artistData[“country”] as! String              }catch{                                }                        }          return cell                }              }  extension ViewController : UITableViewDelegate{      func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {          return 220      }        }  

Output

Click Here to Download Project

Next TopicParsing JSON Response

iOS Fetching data through Get request using Alamofire

Fetching data through Get request using Alamofire

Get Request

Example

Main.storyboard

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