Retrofit: Sending POST request with JSON Array

I have JsonElement jsonElement object which I receive as response from my another GET request. jsonElement.toString(); looks like JSON array:

[{"Id":493,"Number":"380931112233","FriendNumber":"3806822233344"},{"Id":494,"Number":"380931112233","FriendNumber":"3806388886667"}]

I need to send this string via another POST request using Retrofit. How can I send jsonElement or String object via POST request? How should look declaration of my method? For example:

 @POST("/api/geo/getLoc")
    public void getFriendsLocation(/* something */,  Callback<JsonElement> response);

Solution

If you are sending data over request body your implementation should be like this:

Define model according to fields (CaseSensitive "Name" -> String Name etc )

set your api function also like that

@POST("/api/geo/getLoc")
public void getFriendsLocation(@Body YourClass classObject,   Callback<JsonElement> response);

Use directly your created class object on post request

getFriendsLocation(yourClassObjectThatIncludesFields, new Callback .... )

If your sending data over params You can do this with Gson.

Lets say you have a class that have fields like id , number and FriendNumber.Define a function :

public static Map<String, Object> getMapFromObject(Object o) {
    Gson gson = new Gson();
    Type stringObjectMap = new TypeToken<Map<String, Object>>() {
     }.getType();
    return gson.fromJson(gson.toJson(o), stringObjectMap);
}

set your api function also like that

@POST("/api/geo/getLoc")
public void getFriendsLocation(@QueryMap Map<String, Object>,     Callback<JsonElement> response);

When you are sending post request create object from your fields call this function like below here
```
getFriendsLocation(getMapFromObject(yourClassObjectThatIncludesFields), new Callback .... )
```

I didnt write whole code which includes class definition and Callback function because they are up to your customization. I assume that you need to send over body so try the first way.