Saving Data in iOS

May 31 2022 · Swift 5.5, iOS 15, Xcode 13

Part 3: Property Lists

20. Challenge: Saving Property Lists

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Previous episode: 19. Property Lists Anatomy Next episode: 21. Challenge: Reading Property Lists

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Notes: 20. Challenge: Saving Property Lists

This course was originally recorded in April 2020. It has been reviewed and all content and materials updated as of November 2021.

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Add a new method to your task store that also saves your data, but instead of using JSON use Property Lists. One hint that I can give you is that you have available a PList equivalent of JSONEncoder.

let tasksPListURL = URL(fileURLWithPath: "PrioritizedTasks",
                        relativeTo: FileManager.documentsDirectoryURL).appendingPathExtension("plist")
private func savePListPrioritizedTasks() {
do {
  let tasksData = try encoder.encode(prioritizedTasks)
  try tasksData.write(to: tasksPListURL, options: .atomicWrite)
} catch let error {
let encoder = PropertyListEncoder()
encoder.outputFormat = .xml