The persistent behavior of floating headers in a UITableView, especially when using UITableViewStylePlain, can be a source of frustration for iOS developers. When implementing a table view, the default behavior often causes section headers to stick to the top of the screen as the user scrolls, which, while sometimes desirable, may not align with the intended design or user experience in many apps. The question of whether it’s possible to disable these floating headers is a common one, and understanding the nuances of UITableView and its delegate methods is crucial for achieving the desired outcome. In this article, we will explore various techniques and approaches to address the issue of sticky headers in UITableViewStylePlain, providing practical code examples and insights into the underlying mechanisms.

Understanding UITableViewStylePlain and Header Behavior

The UITableViewStylePlain style is the standard, most commonly used style for UITableView. By default, when a UITableView is created with this style, section headers have a “floating” or “sticky” behavior. This means that as the user scrolls through the table view, the header of the current section remains fixed at the top of the screen until it is pushed off by the header of the next section. While this behavior can be useful for providing context to the user as they scroll through large datasets, it can also be visually distracting or simply not appropriate for certain app designs. Therefore, many developers seek ways to disable or modify this behavior to achieve a more customized look and feel.

The UITableView class provides several delegate methods that allow you to customize the appearance and behavior of section headers. One such method is tableView(_:viewForHeaderInSection:), which allows you to provide a custom view for the section header. However, simply providing a custom view does not automatically disable the floating behavior. The key lies in understanding how UITableView manages the positioning of these headers and how to override the default behavior using other delegate methods and properties.

According to Apple’s documentation, “The table view manages the layout of the section header views. The height of the section header is determined by the tableView(_:heightForHeaderInSection:) delegate method.” [^1^]. This means we can influence header behavior by manipulating the header height and view properties. Failing to handle these properties correctly leads to unexpected floating or overlapping of content.

Techniques to Disable Floating Headers

Several techniques can be employed to disable the floating headers in a UITableView with the UITableViewStylePlain style. Each approach has its own advantages and disadvantages, and the best choice depends on the specific requirements of your application. Here are some common methods:

• Setting sectionHeaderTopPadding to 0.0: This is often the simplest solution. By setting the sectionHeaderTopPadding property of the UITableView to 0.0, you can effectively remove the extra padding that causes the header to stick to the top. This is generally the preferred method if you simply want to remove the floating behavior without any other customization.
• Implementing tableView(_:viewForHeaderInSection:) and tableView(_:heightForHeaderInSection:): This approach involves providing a custom view for the section header and setting the height of the header to a non-zero value. By returning a custom view, you can control the appearance and behavior of the header. Setting a height ensures that the header is displayed correctly. This method is useful when you need to customize the appearance of the headers in addition to disabling the floating behavior.

The most straightforward method involves adjusting the table view’s sectionHeaderTopPadding. This property, available in iOS 15 and later, controls the amount of padding added above section headers. By default, it’s non-zero, causing headers to float. Setting it to 0 often resolves the issue directly. For older iOS versions, alternative methods must be used, such as manipulating the header view’s frame or adjusting content insets. Understanding these methods allows developers to create more visually cohesive user interfaces. Let’s explore these techniques in more detail.

For instance, you can implement tableView(_:heightForHeaderInSection:) to return 0 when the content offset is small enough, effectively hiding the header until the user scrolls past a certain point. This is a more nuanced approach, allowing for dynamic header behavior based on the scroll position. This technique requires careful calculation of the content offset and header height to ensure a smooth transition.

Code Examples and Implementation

Let’s illustrate the techniques described above with practical code examples. These examples are written in Swift, but the concepts can be easily translated to Objective-C.

Example 1: Setting sectionHeaderTopPadding to 0.0 (iOS 15+)

In your viewDidLoad() method, add the following line:

if available(iOS 15.0, ) { tableView.sectionHeaderTopPadding = 0.0 } 

This code snippet checks if the device is running iOS 15 or later and, if so, sets the sectionHeaderTopPadding to 0.0. This will disable the floating headers in most cases.

Example 2: Implementing tableView(_:viewForHeaderInSection:) and tableView(_:heightForHeaderInSection:)

Implement the following delegate methods in your UITableViewDelegate:

func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? { let headerView = UIView() headerView.backgroundColor = UIColor.lightGray let label = UILabel(frame: CGRect(x: 10, y: 0, width: 200, height: 22)) label.text = "Section \(section)" headerView.addSubview(label) return headerView } func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat { return 30 } 

This code provides a custom view for the section header with a light gray background and a label indicating the section number. The heightForHeaderInSection method returns a height of 30 points for each header. This ensures that the headers are displayed correctly without floating. Implementing both methods together ensures the headers are styled and positioned as desired.

Featured Snippet:

To disable floating headers in a UITableView with UITableViewStylePlain, especially on iOS 15 and later, the most direct approach is to set the sectionHeaderTopPadding property of the table view to 0.0. This removes the default padding that causes the headers to stick to the top of the screen during scrolling. This method provides a simple and effective way to customize the header behavior without requiring more complex delegate implementations. Remember to check the iOS version to avoid compatibility issues with older devices.

Advanced Customization and Considerations

While the techniques described above are effective for disabling floating headers, there may be cases where you need more advanced customization. For example, you might want to conditionally disable the floating behavior based on the content of the table view or the user’s scroll position. In such cases, you can use a combination of delegate methods and properties to achieve the desired effect.

• Using scrollViewDidScroll(_:) to adjust header visibility: You can implement this delegate method to monitor the scroll position of the table view and dynamically adjust the visibility or position of the section headers. This allows you to create custom animations or transitions as the user scrolls.
• Implementing custom header views with animations: By creating custom header views with animations, you can create more engaging and visually appealing user interfaces. For example, you could animate the header view as it scrolls off the screen or change its appearance based on the user’s interaction.

Moreover, remember to consider performance implications when implementing custom header views or animations. Complex animations or computationally intensive calculations can impact the responsiveness of the table view, especially on older devices. It’s important to optimize your code and use techniques such as caching and lazy loading to ensure a smooth user experience. According to a study by Gomez, 53% of mobile site visits are abandoned if a page takes longer than three seconds to load [^2^]. This highlights the importance of performance optimization in mobile development.

For more complex scenarios, consider using a custom collection view layout instead of a table view. Collection views offer greater flexibility in terms of layout and customization, allowing you to create more sophisticated user interfaces. However, they also require more effort to implement and maintain. You can learn more about collection view layouts from Apple’s official documentation [^3^]. A well-optimized custom layout can significantly improve the user experience.

1. Check your iOS version: Ensure you’re targeting the correct iOS version for the sectionHeaderTopPadding property (iOS 15+).
2. Implement delegate methods: Properly implement tableView(_:viewForHeaderInSection:) and tableView(_:heightForHeaderInSection:).
3. Test on different devices: Verify the behavior on various devices and screen sizes.

Here’s some additional context: Custom table view cell

Q: Why are my headers still floating even after setting sectionHeaderTopPadding to 0?

A: Ensure you are running iOS 15 or later. Also, check for conflicting code in other delegate methods that might be overriding this setting.

Q: Is it possible to have different header heights for different sections?

A: Yes, you can implement tableView(\_:heightForHeaderInSection:) and return different values based on the section index.

Q: How can I add a tap gesture to my custom header view?

A: Create a UITapGestureRecognizer and add it to your header view in the tableView(\_:viewForHeaderInSection:) method. Remember to set the header view's isUserInteractionEnabled to true.

So, go ahead and experiment! Try implementing the code examples provided and see how they work in your own projects. The ability to customize table view headers opens up a wide range of design possibilities, allowing you to create more engaging and user-friendly apps. Explore related topics such as custom cell creation and advanced table view animations to further enhance your iOS development skills. Mastering these techniques will significantly improve your ability to craft visually appealing and highly functional user interfaces.

[^1^]: Apple Inc. (n.d.). UITableView. [https://developer.apple.com/documentation/uikit/uitableview](https://developer.apple.com/documentation/uikit/uitableview) [^2^]: Gomez. (2010). Report: 53 Percent of Mobile Users Abandon Sites That Take Longer Than 3 Seconds to Load. [https://www.akamai.com/newsroom/press-release/report-53-percent-mobile-users-abandon-sites-take-longer-3-seconds-load](https://www.akamai.com/newsroom/press-release/report-53-percent-mobile-users-abandon-sites-take-longer-3-seconds-load) [^3^]: Apple Inc. (n.d.). UICollectionViewLayout. [https://developer.apple.com/documentation/uikit/uicollectionviewlayout](https://developer.apple.com/documentation/uikit/uicollectionviewlayout) Question & Answer :
I’m using a UITableView to layout content ‘pages’. I’m using the headers of the table view to layout certain images etc. and I’d prefer it if they didn’t float but stayed static as they do when the style is set to UITableViewStyleGrouped.

Other then using UITableViewStyleGrouped, is there a way to do this? I’d like to avoid using grouped as it adds a margin down all my cells and requires disabling of the background view for each of the cells. I’d like full control of my layout. Ideally they’d be a “UITableViewStyleBareBones”, but I didn’t see that option in the docs…

Many thanks,

A probably easier way to achieve this:

Objective-C:

CGFloat dummyViewHeight = 40; UIView *dummyView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.tableView.bounds.size.width, dummyViewHeight)]; self.tableView.tableHeaderView = dummyView; self.tableView.contentInset = UIEdgeInsetsMake(-dummyViewHeight, 0, 0, 0); 

Swift:

let dummyViewHeight = CGFloat(40) self.tableView.tableHeaderView = UIView(frame: CGRect(x: 0, y: 0, width: self.tableView.bounds.size.width, height: dummyViewHeight)) self.tableView.contentInset = UIEdgeInsets(top: -dummyViewHeight, left: 0, bottom: 0, right: 0) 

Section headers will now scroll just like any regular cell.