Скачать или смотреть How to Update BTC Price in Real Time from API in React Native

Learn how to update Bitcoin prices in real time in your React Native application using an API. Follow this guide to ensure your app reflects current market values efficiently.
---
This video is based on the question https://stackoverflow.com/q/74154043/ asked by the user 'joe joe' ( https://stackoverflow.com/u/20300547/ ) and on the answer https://stackoverflow.com/a/74154371/ provided by the user 'leonardogbxv' ( https://stackoverflow.com/u/17025725/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How can I update BTC price in real time from API- reactNative

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Update BTC Price in Real Time from API in React Native

With the growing interest in cryptocurrencies, many developers are looking to integrate real-time price updates for assets like Bitcoin into their applications. If you’re building a React Native app and want to display the latest Bitcoin price, you're in the right place. In this guide, we'll explore how you can efficiently fetch and display the current BTC price using an API, ensuring that your app remains responsive and up to date.

Understanding the Problem

You may have implemented a simple price-fetching mechanism in your React Native app. However, you've noticed that when the app loads, it initially displays a price of zero. This happens because the fetching mechanism hasn’t executed yet. You ideally want to update the Bitcoin price every two minutes and display it dynamically on your UI. Let's delve into how to fix this issue.

The Solution

To refresh your Bitcoin price at regular intervals, you should replace the current setTimeout logic with setInterval. Here’s a breakdown of what you need to do:

Step 1: Current Code Review

Your existing code uses setTimeout, which only executes the fetch call once after the specified duration (12 seconds in your case). Here’s the relevant portion of your code:

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

The above code will cause your app to display 0 for the first 12 seconds and will not continue to update the price after that.

Step 2: Implementing setInterval

To fetch the Bitcoin price every two minutes, replace setTimeout with setInterval. Here’s how to do it:

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

Why setInterval?

Continuous Updates: Unlike setTimeout, setInterval executes the fetch operation every specified interval (2 minutes).

Easy Cleanup: The useEffect hook allows for easy management of side effects, including clearing the interval when the component unmounts.

Conclusion

By implementing the setInterval method, you can ensure that your React Native app consistently fetches and displays the latest Bitcoin price in real time. This will improve user experience and keep your app relevant in the ever-changing cryptocurrency market.

Make sure to test the app and see how it performs when pulling data from the API. This setup will keep your audience informed and engaged with real-time updates!

If you have any questions or run into errors, feel free to reach out through the comments. Happy coding!