UITableView+Cache

The UITableView+Cache library provides an efficient caching mechanism for UITableView instances in iOS applications. With this library, you can easily cache table view cells, sections, and even entire table views, resulting in improved app performance and a smoother user experience.

Installation

  1. Open your project in Xcode.
  2. Navigate to your project’s Settings.
  3. Select your target.
  4. Go to the “General” tab.
  5. Scroll down to the “Frameworks, Libraries, and Embedded Content” section.
  6. Click the “+” button.
  7. Search for “UITableView+Cache” and select it.
  8. Click “Add” to add the library to your project.

Usage

Caching Table View Cells

To cache table view cells, follow these steps:

  1. Import the “UITableView+Cache” library into your view controller.
  2. In your view controller’s viewDidLoad method, register the reusable cell identifiers for caching. For example:
          
      override func viewDidLoad() {
        super.viewDidLoad()
        tableView.register(MyTableViewCell.self, forCellReuseIdentifier: "MyCell")
      }
          
        
  3. In your tableView(_:cellForRowAt:) method, dequeue and cache the cell as follows:
          
      func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "MyCell", for: indexPath) as! MyTableViewCell
        // Perform necessary cell configuration
        return cell.cachedCell()
      }
          
        

Caching Table View Sections

In addition to caching table view cells, you can also cache entire sections. To do this, follow these steps:

  1. Import the “UITableView+Cache” library into your view controller.
  2. In your view controller’s viewDidLoad method, register the reusable cell identifiers for caching. For example:
          
      override func viewDidLoad() {
        super.viewDidLoad()
        tableView.register(MyTableViewCell.self, forCellReuseIdentifier: "MyCell")
      }
          
        
  3. In your tableView(_:cellForRowAt:) method, dequeue and cache the section’s cells as follows:
          
      func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let section = tableView.cachedSection(at: indexPath.section) { sectionCache in
          // Perform necessary section setup
          for row in 0..
        

Caching Entire Table Views

If you wish to cache an entire table view, you can do it using the following steps:

  1. Import the "UITableView+Cache" library into your view controller.
  2. In your view controller's viewDidLoad method, register the reusable cell identifiers for caching. For example:
          
      override func viewDidLoad() {
        super.viewDidLoad()
        tableView.register(MyTableViewCell.self, forCellReuseIdentifier: "MyCell")
      }
          
        
  3. In your viewDidAppear(_:) method, cache the entire table view as follows:
          
      override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        tableView.cacheAllSections()
      }
          
        
  4. In your tableView(_:cellForRowAt:) method, dequeue the visible cells as usual:
          
      func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "MyCell", for: indexPath) as! MyTableViewCell
        // Perform necessary cell configuration
        return cell
      }
          
        

Conclusion

The UITableView+Cache library provides a convenient way to improve the performance of table views in iOS applications. By leveraging caching techniques for cells, sections, or entire table views, you can achieve a smoother scrolling experience and optimize memory usage. Start using UITableView+Cache now to enhance your app's performance!