javajsongsonkotlindata-class

Kotlin Data Class from Json using GSON

I have Java POJO class like this:

class Topic {
    @SerializedName("id")
    long id;
    @SerializedName("name")
    String name;
}

and I have a Kotlin data class Like this 

 data class Topic(val id: Long, val name: String)

How to provide the json key to any variables of the kotlin data class like the @SerializedName annotation in java variables ?

Solution

  • Data class: 

    data class Topic(
  @SerializedName("id") val id: Long, 
  @SerializedName("name") val name: String, 
  @SerializedName("image") val image: String,
  @SerializedName("description") val description: String
)

    to JSON: 

    val gson = Gson()
val json = gson.toJson(topic)

    from JSON:

    val json = getJson()
val topic = gson.fromJson(json, Topic::class.java)