# New Method Simplifies Parcelable Usage in Android Simplify Parcelable processes with Kotlinx.serialization. - **Source:** [Chris Keenan Codes](https://brifing.si/source/0d4c37c2-b3ff-4b12-9334-fca791d870d4) - **Published:** 2021-01-18 - **Topic:** [Software & Engineering](https://brifing.si/c/engineering) - **Original article:** - **On Brifing:** https://brifing.si/s/b1b03e80-d17d-44af-bd1d-a167b0d1f9b6 ## Challenges of Parcelable Implementing the Parcelable interface in Android requires functions like describeContents and writeToParcel, as well as creating a CREATOR field. This process is complex and error-prone, especially since the correct order of data reading/writing is critical. ## Java Serializable Alternative The Java Serializable interface offers a simpler solution than Parcelable. However, due to its use of reflection, it leads to performance degradation. This drawback is unacceptable in resource-constrained environments like Android. ## Kotlin @Parcelize Solution The @Parcelize annotation from Kotlin Android Extensions greatly simplifies Parcelable implementation. However, the need to write custom Parcelers for complex objects remains, and it is limited in multiplatform projects. ## Multiplatform Support: moko-parcelize IceRock Development's moko-parcelize library brings @Parcelize functionality to Kotlin Multiplatform. This allows model classes in shared modules to be easily made parcelable. ## Kotlinx.serialization Integration The Kotlinx.serialization library enables working with formats like JSON and Protobuf. However, the requirement to write both KSerializer and Parceler leads to code duplication and complexity. ## Significance of the New Approach The new Kotlinx.serialization-based parcelable library significantly improves developer experience by supporting both Parcelable and other formats with a single serialization mechanism. ## Sources covering this story - https://chrynan.codes/android-parcelable-theres-a-better-way/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._