Store in user defaults swift3/2/2024 ![]() Example 4: Saving and Retrieving a Dictionary import Foundation Finally, it prints out the retrieved integer value. It then retrieves the integer value using the integer method and the same key. This example shows how to save an integer value to UserDefaults using the set method and the key "myInt". Let myInt = defaults.integer(forKey: "myInt") Retrieve the integer value for the key "myInt" Set an integer value for the key "myInt" Example 3: Saving and Retrieving an Integer import Foundation Finally, it prints out the retrieved array. If the casting fails for some reason, it will default to an empty array. It then retrieves the array using the array method and the same key, and casts it as an array of strings. This example shows how to save an array of strings to UserDefaults using the set method and the key "myArray". Let myArray = defaults.array(forKey: "myArray") as? ![]() Retrieve the array of strings for the key "myArray" Set an array of strings for the key "myArray"ĭt(, forKey: "myArray") Example 2: Saving and Retrieving an Array of Strings import Foundation Finally, it prints out the retrieved boolean value. It then retrieves the boolean value using the bool method and the same key. This example shows how to save a boolean value to UserDefaults using the set method and the key "isDarkModeEnabled". Let isDarkModeEnabled = defaults.bool(forKey: "isDarkModeEnabled") Retrieve the boolean value for the key "isDarkModeEnabled" Set a boolean value for the key "isDarkModeEnabled"ĭt(true, forKey: "isDarkModeEnabled") Here are some more examples of UserDefaults use in Swift − Example 1: Saving and Retrieving Booleans import Foundation Security − UserDefaults data is kept safely in the app's sandbox, which means that only the program that produced it may access it. Simple API − Its ease of use makes it simple to set and get values by key.įast − UserDefaults is a suitable option for tiny quantities of data because it is built for speedy reads and writes. These are some of UserDefaults' main characteristicsĭata Persistence − Even if the app is closed or the device reboots, UserDefaults data remains accessible. It is simple to use and doesn't need other frameworks or libraries. Simple data types, such as text, booleans, integers, and dates, are frequently stored in User Defaults. The value may then be obtained by using the key as a reference. You assign a value to a particular key in a key-value pair system that is used. In iOS, macOS, and watchOS, a fundamental storage mechanism called UserDefaults enables an app to store relatively small amounts of data, including user preferences or settings. In this article, you will learn about User Defaults with some examples. You can use User Defaults, Property List Serialization, Core Data, etc. In Swift, there are several ways to save local data in an app, depending on the type and size of data you want to save.
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