Kotlin Programming Cookbook

How to do it…

In the following steps, we will learn how to use the lazy delegate in Kotlin:

1. First, let's see how to create a property through lazy initialization. The syntax is as follows:

val / var <property name>: <Type> by <delegate>

2. While creating a lazy delegate, we use by lazy, as shown:

class MainActivity : AppCompatActivity() {    private val textView : TextView by lazy {        findViewById<TextView>(R.id.textView) as TextView    }    override fun onCreate(savedInstanceState: Bundle?) {        super.onCreate(savedInstanceState)        setContentView(R.layout.activity_main)        textView.text="ABC"    }}

The lazy delegate initializes the object on its first access and stores the value, which is then returned for subsequent accesses.