Creating an Engaging Splash Screen with Horizontal Progress Bar Using Coroutines in Android

Learn how to create a dynamic splash screen with a horizontal progress bar using Kotlin coroutines in Android. Discover step-by-step instructions and best practices!
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This video is based on the question https://stackoverflow.com/q/66161904/ asked by the user 'Monica' ( https://stackoverflow.com/u/14221821/ ) and on the answer https://stackoverflow.com/a/66167726/ provided by the user 'kelvin' ( https://stackoverflow.com/u/3995126/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Creating a Dynamic Splash Screen with Horizontal Progress Bar Using Coroutines in Android

Do you want to enhance the user experience of your Android app with an engaging splash screen? A splash screen not only grabs the user’s attention but can also provide a seamless transition into the app’s main content. One great way to make your splash screen more interactive is by adding a horizontal progress bar that fills up over time. In this guide, we’ll walk through how to implement a splash screen with a horizontal progress bar using Kotlin coroutines.

The Problem: A Non-Functional Splash Screen

You might have encountered a situation where your splash screen appears, but the progress bar doesn't move, and the app doesn't transition to the next screen. Here's a common code snippet that often leads to this issue:

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

In this code, the splash screen shows up, but the progress bar fails to update as expected, and the transition to the main activity doesn't take place effectively. Let's uncover the fix for this issue!

Solution: Implementing Continuous Updating of Progress Bar

The root cause of the issue is that the progress bar is being updated only once due to the lack of a loop for continuous updates. Let's break down the improved solution step-by-step.

Step 1: Modify Your Coroutine Loop

By using an infinite loop within the coroutine, you can repeatedly check and update the progress bar. Here’s the corrected version of the original code:

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

Step 2: Understanding the Code Structure

lifecycleScope.launch: This is a coroutine that runs in the lifecycle of the activity. It automatically manages the coroutine's lifecycle, ensuring resources are freed when the activity is destroyed.

while (true): Creates an infinite loop that continues until the completion condition is met.

delay(1000): This delays each iteration of the loop by 1 second to mimic a loading period.

progressBarLoading?.setProgress(progressBarStatus): Updates the progress bar based on the current status.

finish(): Closes the splash screen after transitioning to the main activity.

Conclusion

By implementing the above steps, you’ll have a functional splash screen with a horizontal progress bar that updates dynamically until the app is ready to transition to the main content. This approach not only improves the user experience but also helps you practice using Kotlin coroutines effectively!

Now, go ahead and integrate this into your own Android applications, and watch your splash screen come to life! If you have any questions or run into issues, feel free to leave your comments below.

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