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Learn how to change the number of rows and cells in a `UITableView` based on which button is clicked in your Swift iOS application. This step-by-step guide covers essential code modifications and tips for creating an interactive user experience.
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How to Dynamically Change UITableView Rows and Cells Based on Button Clicks in Swift iOS

When developing iOS applications, it’s common to want to display different sets of data based on user interactions. For instance, in your user profile page, you may want to show saved shop items when one button is clicked and user reviews when another button is selected. If you’re working with a UITableView and struggling with this functionality, you’re in the right place.

In this guide, we will break down the process of dynamically updating the number of rows and cells in a UITableView based on which button is clicked.

Understanding the Problem

You have two buttons:

Saved Items Button: Displays saved shop items.

Reviews Button: Displays user reviews.

You need to ensure that when a user clicks on one of these buttons, the UITableView reflects the corresponding data, showcasing the correct number of rows and populated cells.

Step-by-Step Solution

Let’s address how to achieve this through clear, logical steps.

1. Simplifying the numberOfRows Method

You can simplify your numberOfRowsInSection method by using a conditional operator to decide which count to return:

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

This change makes the code cleaner and easier to read. Now, depending on which button is selected, your table will show the appropriate number of items.

2. Modifying the cellForRowAt Method

Next, you need to update the cellForRowAt method. Just like in the previous method, you’ll check which button is selected and populate the cell accordingly:

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

3. Updating the UI Based on Button Actions

Now that we determine how many rows to show and how to populate our cells, the final touch is ensuring the UITableView updates when either button is clicked. When you modify which button is selected, you need to call reloadData() on your UITableView.

Here is how to set up your button actions:

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

4. Summary & Tips

Use the conditional operator to simplify your code in numberOfRowsInSection.

Check the state of the buttons in cellForRowAt and populate cells accordingly.

Remember to call reloadData() after updating the button selection to refresh the displayed data in the table.

Conclusion

With this approach, your UITableView becomes dynamic, responding effortlessly to user inputs. By implementing these straightforward methods, you can enhance the interactivity of your application, making the user experience more engaging.

Feel free to explore these suggestions and code examples in your own projects, and don’t hesitate to experiment with further improvements!