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kotlincastingdata-class

String Casting to Data Class with Kotlin

I have data class. I have inserting the room database this data class. it has string type. But I want to use back. I have calling the data. It has string. But I want to convert the data class type.

How can do this ?

Edit I used the Type Conveter for Room Database. if u have same problem. u should the this example. https://medium.com/@rasim0042/type-converter-for-room-db-2700e968a6d5

Solution

  • If you want to use Gson with kotlin extension

    Extension function

    inline fun <reified T : Any> String.toDataClass(): T =
    Gson().fromJson(this, T::class.java)

inline fun <reified T : Any> T.toJsonString(): String =
    Gson().toJson(this)

    Use to convert string and visaversa

    // to get String from DataClass object
val jsonString: String = note.toJsonString()

// to get DataClass object from String
val note = jsonString.toDataClass<Note>()