CollapsibleTableSectionViewController

TableView

October 14, 2023

A Swift library that helps you collapse table view sections.

Features

Support collapsible sections in a table view
Collapse all the sections by default (configurable)
Keep only one section expanded (configurable)
Auto resize table view cell
Easy-to-use protocols for configuration

Requirements

iOS 9.0+
Xcode 10.0+
Swift 4.2

Installation

Manual

Just clone and add the following Swift files to your project:

CollapsibleTableSectionViewController.swfit
CollapsibleTableViewHeader.swift

CocoaPods

Make sure that you use latest stable Cocoapods version: pod --version
If not, update it: sudo gem install cocoapods
pod init in you project root dir
nano Podfile, add:


                                              
                                                use_frameworks!

pod ‘CollapsibleTableSectionViewController’, ‘~> 2.0.1’

Save it: ctrl-x, y, enter
pod update
Open generated .xcworkspace
Don’t forget to import CollapsibleTableSectionViewController: import CollapsibleTableSectionViewController!

Carthage

nano Cartfile
put github "jeantimex/CollapsibleTableSectionViewController" ~> 2.0.1 into Cartfile
Save it: ctrl-x, y, enter
Run carthage update
Copy CollapsibleTableSectionViewController.framework from Carthage/Build/iOS to your project
Make sure that CollapsibleTableSectionViewController is added in Embedded Binaries section of your target (or else you will get dyld library not loaded referenced from ... reason image not found error)
Add import CollapsibleTableSectionViewController on top of your view controller’s code

Usage

Step 1. Subclass CollapsibleTableSectionViewController


                                              
                                                import CollapsibleTableSectionViewController
class ViewController: CollapsibleTableSectionViewController { … }

Step 2. Conforms to the CollapsibleTableSectionDelegate protocol


                                              
                                                extension ViewController: CollapsibleTableSectionDelegate { … }

CollapsibleTableSectionDelegate Protocol

Most of the protocol methods are optional and they are very similar to UITableViewDataSource and UITableViewDelegate, here is a list of the available protocol methods:

1. optional func numberOfSections(_tableview: UITableView) – >Int

Asks the data source to return the number of sections in the table view. Default is 1.


                                              
                                                extension ViewController: CollapsibleTableSectionDelegate {

func numberOfSections(_ tableView: UITableView) -> Int {

return 10

}

}

2. optional func collapsibleTableView(_tableview: UITableView, numberOfRowsInSection section: Int) – >Int

Returns the number of rows (table cells) in a specified section. Default is 0.


                                              
                                                extension ViewController: CollapsibleTableSectionDelegate {

func collapsibleTableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

return 5

}

}

3. optional func collapsibleTableView(_tableView: UITableView, cellForRowAt indexPath: IndexPath) – >UITableViewCell

Returns the table cell at the specified index path. You can also use your custom cells, see our example projects for more details.


                                              
                                                extension ViewController: CollapsibleTableSectionDelegate {

func collapsibleTableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

let cell = tableView.dequeueReusableCell(withIdentifier: “Cell”) as UITableViewCell? ?? UITableViewCell(style: .default, reuseIdentifier: “Cell”)

cell.textLabel?.text = “Cell Text”

return cell

}

}

4. optional func shouldCollapsibleByDefault(_tableView: UITableView) – >Bool

Return true if you would like collapse all the sections when the table is loaded. Default is false.

5. optional func shouldCollapseOthers(_tableView: UItableView) – >Bool

Return true if you would like to keep only one extended section (like accordion style). Default is false.

6. optional func collapsibleTableView(_tableView: UITableView,titleForHeaderInSection section: Int) – >String?

The title for each section. Default is nil.

7. optional func collapsibleTableView(_tableView: UITableView, didSelectRowAt indexPath: IndexPath)

Tells the delegate that the specified row is now selected.

Examples

Run the Examples project in this repo and you will find the following demos that help you get up and running:

Basic: The minimal working example
Custom Cell: Implement a custom cell programmatically
Collapse By Default: All sections are collapsed by default
Collapse Others: Accordion-style table view that only keeps one section expanded at a time

For more details of how to implement collapsible table sections using Swift, please checkout this repo for more information: https://github.com/jeantimex/ios-swift-collapsible-table-section.

GitHub

View Github

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