GSON, json in enum. To give meaning to default

[charlenef]

With help retrofit Received from server json♪ For example:

["3","23","3","1","2","11","4"]

Then this joy is desserized into the flow. Enum- Nyuance is that only the number before, let's say, 4. Anything else is interesting, but only as a presence.

Enum "Kotlin, but it's like Java."

enum class AccidentDamage(val text: String, val code: Int) {
    @SerializedName("1") WITHOUT("жив, цел, орёл!", 1),
    @SerializedName("2") LIGHT("вроде цел", 2),
    @SerializedName("3") HEAVY("вроде жив", 3),
    @SerializedName("4") LETHAL("летальный", 4),
    UNKNOWN("неизвестно", 255);
}

I mean, I need to get 1..4 right, and everything else is back as UNKNOWN. For this reason json This flow must be created Enum-So:

HEAVY,UNKNOWNHEAVY,WITHOUT,LIGHT,UNKNOWNLETHAL

Is it possible to do this without adapters writing?

[esther]

I don't think so.

Such behaviour can be carried out with help. https://static.javadoc.io/com.google.code.gson/gson/2.6.2/com/google/gson/JsonDeserializer.html

private class AccidentDamageDeserializer 
    implements JsonDeserializer<AccidentDamage> {
@Override

public AccidentDamage deserialize(JsonElement json, Type type,

JsonDeserializationContext context) throws JsonParseException {

String damage = json.getAsString();

switch(damage){

case "1" : return AccidentDamage.WITHOUT;

case "2" : return AccidentDamage.LIGHT;

case "3" : return AccidentDamage.HEAVY;

case "4" : return AccidentDamage.LETHAL;

default  : return AccidentDamage.UNKNOWN;

}

}

Use it.

GsonBuilder gsonBuilder = new GsonBuilder();

gsonBuilder.registerTypeAdapter(AccidentDamage.class, new AccidentDamageDeserializer () );

Gson gson = gsonBuilder.create();