JSON.NET With Xamarin iOS

Introduction

Xamarin is a platform to develop cross-platform and multi-platform apps (for example, Windows phone, Android and iOS). In Xamarin platform, the code sharing concept is used. In Xamarin Studio, Visual Studio is also available. Json.NET is a popular high-performance JSON framework for .NET.

Browse code here.

Prerequisites

Xamarin Studio.
Xcode.

The steps given below are required to be followed in order to write JSON in Xamarin iOS, using Xamarin Studio.

Step 1

Go to Xamarin Studio.

Click New Solution—> select iOS—>select App--> Choose single View App. Afterwards, click Next.

Step 2

In this step, configure your app. Give the app name (Ex:sample), Organization Identifier. Afterwards, click Next.

Step 3

In this step, give your project name (Ex: Sample) and solution name (Ex: Sample). Give the path of your project. Afterwards, click Create.

Step 4

Subsequently, go to the solution. In the solution, get all the files and sources in your project. Now, select Main.storyboard and double click to open Main.storyboard page.

Step 5

After opening the Main.storyboard, you can design this page, as per your desire.

Step 6

In this step, add one Package in your project. Its name is called Json.NET.

Go to Solution Explorer—>Package—>Add Package.

Step 7

Now, choose Json.NET and select Version. Afterwards, click Add Package.

Step 8

In this step, design your app, using storyboard and Toolbox.

TextBox(txtInput).

Button(btnCreate).

Step 9

In this step, add one class file name called(JsonHelper.cs) and write the code given below.

JsonHelper.cs

using System;
using System.IO;
using Newtonsoft.Json.Linq;
namespace XamariniOSJson {
public class JsonHelper {
public static string fileextension = ".json";
public static string Folderpath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
public static bool JsonWrite(string filename, string JsonData) {
try {
var filepath = Path.Combine(Folderpath, filename + fileextension);
File.WriteAllText(filepath, JsonData);
Console.WriteLine(true.ToString());
return true;
} catch (Exception e) {
Console.WriteLine(e.ToString());
return false;
}
}
}
}

Step 10

In this step, go to the ViewController.cs page. Write the code given below.

ViewController.cs

using System;
using UIKit;
using Newtonsoft.Json.Linq;
namespace XamariniOSJson {
public partial class ViewController: UIViewController {
public static string filename = "JsonFile";
public static string name = "Name";
JObject js = new JObject();
protected ViewController(IntPtr handle): base(handle) {
// Note: this .ctor should not contain any initialization logic.
}
public override void ViewDidLoad() {
base.ViewDidLoad();
// Perform any additional setup after loading the view, typically from a nib.
}
partial void BtnWrite_TouchUpInside(UIButton sender) {
js.Add(name, txtInput.Text);
JsonHelper.JsonWrite(filename, js.ToString());
}
public override void DidReceiveMemoryWarning() {
base.DidReceiveMemoryWarning();
// Release any cached data, images, etc that aren't in use.
}
}
}

Step 11

Now, go to Run option, choose Debug and the list of iPhone and iPad Simulators, which are available. You can choose any one Simulator and run it.

Output

After few seconds, the app will start running on your iPhone Simulator. You will see your app working successfully.

You will give any data in an input box and click Write button. The data will store in JSON file.

You will see your JSON formatted data in your JSON file.

Summary

This was the process of how to write JSON in Xamarin iOS, using Xamarin Studio.