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Learn how to update your Android RecyclerView data on button click by switching between two JSON endpoints using Volley.
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Pulling New Information from JSON on Button Click using Volley and RecyclerView

Have you ever wanted to create a dynamic Android application that can switch between different sets of data on the fly? If your app uses a RecyclerView to display content pulled from a JSON API, this guide is for you! Specifically, we'll tackle the scenario where you want to switch between two JSON sources after pressing a button.

Problem Overview

In the current setup, your Android application pulls information from a SQL database via a PHP script. Initially, you have a working implementation that populates your RecyclerView with this data when the app starts. The challenge arises when you want to utilize two different sets of JSON data.

The Objective

You want to make it possible to:

Change the URL from which your app pulls JSON data when a button is clicked.

Refresh the RecyclerView with the newly fetched data, displaying the relevant content dynamically.

Solution Breakdown

Here’s a step-by-step approach to solve this problem by implementing two buttons that switch between two distinct JSON sources.

Step 1: Define Multiple URLs

First, you need to have the URLs from which you will fetch your JSON data defined in your code:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Update RecyclerView Setup

Next, you must ensure that your RecyclerView and its adapter are set up to handle changes in data. Here’s how you can do that:

[[See Video to Reveal this Text or Code Snippet]]

Make sure to call this method during the onCreate() lifecycle event.

Step 3: Modifying the Volley Response

When you receive a response in your Volley request, you can directly inform the adapter about the dataset change:

Change the following lines:

[[See Video to Reveal this Text or Code Snippet]]

To:

[[See Video to Reveal this Text or Code Snippet]]

This signals the adapter to refresh the data displayed in the RecyclerView.

Step 4: Handling Button Clicks

Finally, link each button to load the respective JSON data:

[[See Video to Reveal this Text or Code Snippet]]

Final Thoughts

By following these steps, you’ll create an Android application that can dynamically switch between two different JSON endpoints on button click. Your users will appreciate the flexibility of being able to view different datasets without restarting the application.

This technique enhances the interactivity of your app and provides a more fluid user experience.

Feel free to implement this functionality and tailor it to your unique application needs. Happy coding!