To allow for your class instances to be sent as a Parcel you must implement the Parcelable interface along with a static field called CREATOR, which itself requires a special constructor in your class. By annotating your Java classes that you intend to use, the library is able to create much of the boilerplate code needed as discussed in the manual steps below. See this guide on Parceler to see how to use it. The simplest way to create a Parcelable in Java is to use a third-party library called Parceler. See kotlin-parcelize for more examples of how to use annotationĬreating a Parcelable, The Easiest Way (In Java) Import class User ( val firstName : String, val lastName : String, val age : Int ): Parcelable With the update to kotlin, you can use the plugin kotlin-parcelize Creating a Parcelable, The Easiest Way (In Kotlin) The Binder marshals the Parcel to be sent, sends and receives it, and then unmarshals it on the other side to reconstruct a copy of the original Parcel. The Binder communicates with Parcels, which is a message container. Parcelable will help you pass data between these components.Īndroid uses Binder to facilitate such communication in a highly optimized way. Due to Android's memory management scheme, you will often find yourself needing to communicate with different components of your application, system components, or other applications installed on the phone.
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