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Android - JSON Parsing Using Retrofit Library with Jetpack Compose

Last Updated : 23 Jul, 2025

JSON is a format with the help of which we can exchange the data from the server within our application or a website. For accessing this data from the server within android applications. There are several libraries that are available such as Volley and Retrofit. In this article, we will take a look at JSON Parsing in Android applications using Jetpack Compose. 

Step by Step Implementation

Step 1: Create a New Project in Android Studio

To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. While choosing the template, select Empty Compose Activity. If you do not find this template, try upgrading the Android Studio to the latest version. We demonstrated the application in Kotlin, so make sure you select Kotlin as the primary language while creating a New Project.

Step 2: Adding dependency for using Retrofit

Navigate to app > Gradle Scripts > build.gradle file and add the below dependency to it. Comments are added to the code.

// below dependency for using retrofit.
implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.5.0'

// below dependency for using picasso image loading library
implementation 'com.squareup.picasso:picasso:2.71828'

After adding this dependency simply sync your project to install it.

Step 3: Adding a new color in the Color.kt file

Navigate to app > java > your app’s package name > ui.theme > Color.kt file and add the below code to it.   

Step 4: Adding permissions to the internet in the AndroidManifest.xml file

Navigate to the app > AndroidManifest.xml and add the below code to it.  

Step 5: Creating a Modal class

Navigate to app > java > your app's package name > Right-click on it > New > Kotlin class and specify the name of the class as CourseDataModal and add the below code to it. Comments are added in the code to get to know in detail. 

Step 6: Creating an Interface

Navigate to app > java > your app's package name > Right-click on it > New > Kotlin class and select interface in it and then specify the name as RetrofitAPI. Add the below code to it. Comments are added in the code to get to know in detail. 

Step 7: Working with the MainActivity.kt file

Navigate to app>java>your app's package name>MainActivity.kt file and add the below code to it. Comments are added in the code to get to know in detail. 

Now run your application to see the output of it. 

Output:

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