So where’s the magic of Kotlin? That’s what we’ll see next through an example android application. The above way to save and retrieve values from a SharedPreference is nearly the same as we do in Java. Note: Changes made to the editor after the commit or apply aren’t considered. We can also clear all the values or remove a particular value by calling clear() and remove(String key) methods. The permitted types on a SharedPreference instance are: Kotlin Code to Clear and Remove SharedPreferences Records val sharedPreference = getSharedPreferences('PREFERENCE_NAME',Context.MODE_PRIVATE)įor retrieving a value: sharedPreference.getString('username','defaultName') We can set values on our SharedPreference instance using Kotlin in the following way. SharedPreferences Setting/Retrieving Values using Kotlin The commit() saves the values immediately whereas apply() saves the values asynchronously. We can call commit() or apply() to save the values in the SharedPreferences file.The SharedPreferences.Editor() is used to edit values in the SharedPreferences.Here String is the name of the SharedPreferences file and int is the Context passed.

getSharedPreferences(String, int) method is used to retrieve an instance of the SharedPreferences.

Let’s look at some important methods for SharedPreferences. You can create multiple files to hold the SharedPreferences data.

The data is stored in the form of a key-value pair. Generally, it is used to cache user local data such as login forms. It’s an interface that allows us to store/modify/delete data locally. SharedPreferences is part of the Android API since API level 1. In this tutorial, we’ll learn how to implement SharedPreferences in our Android Application using Kotlin.

Kotlin weak reference