Moshi equivalent to Gson.toJson

Question

I'm new to Moshi and I was thinking to implement it to replace my Gson lib. Can't figure out how exactly I can convert a model class into a string in JSON format.

My model is UiGeneralCategory

I have this example but I think I'm a little overburned because something doesn't line up.

ok,

val jsonAdapter: JsonAdapter = moshi.adapter(UiGeneralCategory::class.java)

works, now i have to replace all the ArrayLists in models and test it

Answer 1

Ok, so here is my class for toJson/fromJson conversion (with generic object), It uses just one instance of the Moshi builder for optimization (from what I have seen is something like 400-500 millis)

import android.util.Log
import com.squareup.moshi.JsonAdapter
import com.squareup.moshi.Moshi
import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
import java.lang.reflect.Type

class MoshiHelper {

private var mMoshiInstance: Moshi = getMoshi()

private fun getMoshi(): Moshi {
    Log.d("testMoshiInstance112", "initialized ")
    return Moshi.Builder()
        .add(KotlinJsonAdapterFactory())
        .build()
}

companion object {
    private var mInstance: MoshiHelper? = null

    fun getInstance(): MoshiHelper {
        if (mInstance == null) {
            mInstance = MoshiHelper()
        }
        return mInstance!!
    }

}


fun <T> moshiFromJson(json: String, type: Type): T {
    //use jsonAdapter<T> for generic adapter
    val jsonAdapter: JsonAdapter<T> = mMoshiInstance.adapter(type)
    return jsonAdapter.fromJson(json)!!
}

fun <T> moshiToJson(obj: T, type: Type): String {
    //use jsonAdapter<T> for generic adapter
    val jsonAdapter: JsonAdapter<T> = mMoshiInstance.adapter(type)

    return jsonAdapter.toJson(obj)
}

}

And the usage:

var mMoshiHelper = MoshiHelper.getInstance()

var mPayload: String = mMoshiHelper.moshiToJson(mUiLocalModel, UiMyLocalModel::class.java)

var mUiLocalModel: UiMyLocalModel = mMoshiHelper.moshiFromJson(mPayload, UiMyLocalModel::class.java)