What tasks is the lazy loading mechanism used for?

Lazy loading mechanism is used for deferred initialization of resources or data until they are actually needed. This helps save memory and loading time of the application, improving performance.

In Android, lazy loading is applied, for example:

• To load images or data from the network only when they are actually needed (e.g., when scrolling through a list).
• To initialize heavy objects or components only upon first access.
• To optimize the loading of UI components so that not everything is created at once.

Example of using lazy loading in Kotlin:

val heavyObject: HeavyClass by lazy {
    println("Initializing heavyObject")
    HeavyClass()
}

fun useHeavyObject() {
    // heavyObject will be created only upon the first call
    heavyObject.doSomething()
}

Thus, lazy loading is used to optimize resources and improve application responsiveness.