Kotlin Programming Cookbook

How to do it…

To be able to define and use SharedPreferences, we follow particular steps. We will go through each step and implement this together:

1. First, we will create a Prefs class that will act as a single entry to read/write from our app's SharedPreferences. This will make it easier to handle all SharedPreferences since they all will be in one place. As we know, shared preference requires context to be present, so we will pass context in the primary constructor. We will also create a single SharedPreferences object that we will use throughout the class:

class Prefs (mContext:Context){    val sharedPrefences=mContext.getSharedPreferences("com.ankoexamples.app",Context.MODE_PRIVATE)    val PREF_USERNAME="pref_username"}

2. For example, we have ...