Serialization and deserialization are fundamental concepts in the context of JSON parsing,
especially when it comes to transferring data between a server and a client or
handling data in modern Android apps.
Serialization
Serialization is the process of converting an object into a format that can easily be stored or
transmitted and later reconstructed. In the context of JSON parsing, serialization refers to
converting Java or Kotlin objects into a JSON string. This is particularly useful when you need to
send data from your app to a server or save it in a format that’s easily readable and
accessible. An example of this is converting a User object with properties like name and email into a
JSON string that represents the same data.
data class User(
val name: String,
val email: String
)
val testUser = User(name = "Test", email = "mail@gmail.com")
{
"name": "Test",
"email": "mail@gmail.com"
}
Deserialization
Deserialization is the reverse process of serialization. It involves converting data from a stored
or transmitted format back into an object. In JSON parsing, deserialization refers to converting a
JSON string into a Java or Kotlin object. This is crucial when receiving JSON data from a server
response or reading a JSON-formatted file, allowing the app to work with the data in a more
natural, object-oriented way. The following diagram shows how serialization and deserialization
are generally used in the context of Android apps.
Introducing Moshi
The Moshi library, designed specifically for Java and Kotlin, offers an efficient and
straightforward way to handle both serialization and deserialization. It does so through the use of adapters that know how to convert the objects of a specific type to JSON and back. Here’s how Moshi facilitates these processes:
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