How to Append and Remove Selected Row Cells in UITableView Cell with a Custom Button?

Learn how to effectively manage selected cells in a `UITableView` using Swift. This guide covers appending and removing selected meal items when a button within your table view cells is clicked.
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This video is based on the question https://stackoverflow.com/q/70802606/ asked by the user 'JJHA' ( https://stackoverflow.com/u/17306879/ ) and on the answer https://stackoverflow.com/a/70803066/ provided by the user 'bartwader' ( https://stackoverflow.com/u/4955761/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Append and Remove Selected Row Cells in UITableView Cell with a Custom Button?

Managing data in a UITableView can often be a tricky task, especially when you want to allow users to make selections on various rows of your table. One common challenge is handling the action that should take place when a button in a cell is clicked—in this case, you want to append the selected meal to an array and remove it when the button is deselected.

This guide will guide you through setting up a simple UISearchViewController with custom table view cells that allow users to select meals and manage their selection state effectively.

Problem Overview

In a typical UITableView, each row can represent an item, and you might want to let users select certain items using a button. You need to implement a system that allows you to take action when the user interacts with these buttons in the cells. Specifically, when a button is clicked:

Append the corresponding meal to a selected meals array if it’s being selected.

Remove it from the array if it’s being deselected.

Steps to Implement Cell Selection Management

1. Define a Protocol for Cell Interaction

To enable communication between the table view cell and the view controller, create a protocol called MealCellDelegate. This will allow the MealCell to inform the MealSearchViewController when its button is clicked.

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2. Create the Meal Cell

Define your custom cell class (MealCell). This will contain a delegate reference and an action tied to the button.

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3. Set up the Meal Search View Controller

In your MealSearchViewController, set the cell's delegate to the view controller. You can also initialize the data source of your table view within viewDidLoad.

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4. Implement UITableViewDataSource Methods

Make sure to implement the necessary methods to populate the table view and assign the delegate to the created cells:

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5. Handle Cell Selection Logic

Using the didSelect method from your delegate, append or remove meals from the selected array based on the button's current state:

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

Conclusion

By following these steps, you can create an intuitive way to manage item selections in a UITableView. This method allows for clear communication between your custom cells and the controller, enabling you to effectively append and remove selected items from an array.

Feel free to modify styles and add additional functionality based on your app's requirements. Happy coding!

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