Fixing the NestedScrollView Scrolling Issue with RecyclerView in Android

Learn how to solve the `NestedScrollView` not scrolling through all elements of a `RecyclerView` with this comprehensive guide on Android development.
---

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: NestedScrollView not scrolling through all elements of RecyclerView

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Troubleshooting NestedScrollView Scrolling Issues in Android

In Android development, one common issue developers encounter is the inability for NestedScrollView to scroll through all elements of a RecyclerView. This is particularly troubling when you're working with expandable views, like CardViews, which can throw a wrench into your scrolling functionality. Whether you’re a beginner or a seasoned developer, this guide will help you tackle this issue and get your UI functioning as intended.

Understanding the Problem

When using a NestedScrollView to wrap a RecyclerView, it’s crucial to configure them properly to allow for seamless scrolling. For instance, you may find that when you expand items in your RecyclerView, scrolling becomes limited; you can navigate through a certain number of items but cannot scroll further down, even if items are closed. This is often experienced in emulators or real devices, leading to frustration during development.

Here’s a quick recap of the initial setup that seems to cause the problem:

A RecyclerView populated with expandable CardViews.

The RecyclerView is nested inside a NestedScrollView along with other views.

Scrolling behaviors are not functioning as expected when items in the RecyclerView expand.

The Solution

To solve this NestedScrollView scrolling issue, you might need to adjust your implementation. Follow these simple steps to resolve the problem:

Step 1: Modify Your Activity Code

Inside your MainActivity, you currently have the following lines of code that may be impeding scrolling functionality:

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

Action: Remove these two lines. This will allow the RecyclerView to handle scrolling as it should within the NestedScrollView.

Step 2: Update Your XML Layout

Next, check your XML layout file where the RecyclerView is defined. You will find this line:

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

Action: Delete this line from your layout. By doing so, you ensure that the RecyclerView can properly participate in the nested scrolling behavior of the NestedScrollView.

Step 3: Refresh Your UI

Finally, it’s always a good idea to refresh your UI after making these changes. This can be done by re-running your application. On doing this, you should find that the NestedScrollView now allows for full access to all expanded items in your RecyclerView, thereby resolving the scrolling issue.

Conclusion

By executing the above changes, you will have enabled your RecyclerView to fully participate in the scrolling capabilities of the NestedScrollView, regardless of whether its items are expanded or retracted. This enhancement improves user experience significantly, allowing for seamless navigation through all data elements displayed within your application.

Happy Coding! If you have further questions or run into more issues, don't hesitate to reach out for more guidance or share your experience in troubleshooting similar UI problems in Android development.