What is the main reason for using the Parcelize annotation in Android development?

The @Parcelize annotation in Android is used for automatically generating code that implements the Parcelable interface for a class. This greatly simplifies the process of passing objects between Android components (for example, between Activity or Fragment) via Intent or Bundle.

Without @Parcelize, developers need to manually write writeToParcel() methods and a constructor that takes a Parcel, which often leads to errors and increases the amount of code.

Example of usage:

@Parcelize
data class User(val name: String, val age: Int) : Parcelable

Here, the compiler automatically generates all the necessary code for serializing and deserializing the User object.

The main reason for using @Parcelize is convenience and reducing boilerplate code when working with data transfer in Android.