Compose Navigation Support - Gson

NavigationSupport.kt

import android.os.Bundle
import android.os.Parcelable
import androidx.navigation.NavArgumentBuilder
import androidx.navigation.NavBackStackEntry
import androidx.navigation.NavType
import androidx.navigation.navArgument
import com.google.gson.Gson

inline fun <reified T : Parcelable?> createNavArgument(
    argNamed: String,
    isNullableAllowed: Boolean = false
) = navArgument(argNamed) {
    type = createNavType<T>(isNullableAllowed)
    nullable = isNullableAllowed
}

inline fun <reified T : Parcelable?> NavArgumentBuilder.createNavType(
    isNullableAllowed: Boolean = false
) = object : NavType<T>(isNullableAllowed = isNullableAllowed) {

    override fun get(bundle: Bundle, key: String): T? {
        return bundle.getParcelable(key)
    }

    override fun parseValue(value: String): T {
        return Gson().fromJson(value, T::class.java)
    }

    override fun put(bundle: Bundle, key: String, value: T) {
        bundle.putParcelable(key, value)
    }
}

inline fun <reified T : Parcelable> NavBackStackEntry.getNavArgs(
    argNamed: String
): T? = arguments?.getParcelable(argNamed)