In what context is the lazy() function called?

The lazy() function in Android (most often in the context of Kotlin) is used for lazy initialization of variables. The call to the lazy() function occurs at the moment of property declaration, but the lambda passed to lazy is executed only upon the first access to that property. Thus, the code inside lazy executes in the context of the first access to the value, not when the object or class is created.

Example:

val myValue: String by lazy {
    println("Calculating value")
    "Hello, World!"
}

fun main() {
    println("Before first access")
    println(myValue) // The lambda inside lazy is invoked here
    println(myValue) // The value has already been computed, lambda is not called
}

In this example, the lambda inside lazy will execute only once, upon the first access to myValue.