Retrofit将JSON数组转换为字符串的问题。

使用Gson库将JSON数组转换为Java对象或字符串。以下是示例代码：

public class MyObject {
    private String name;
    private int age;
    // getters and setters
public interface MyApi {
    @GET("my-endpoint")
    Call<List<MyObject>> getMyObjects();
// create Retrofit instance
Retrofit retrofit = new Retrofit.Builder()
    .baseUrl(BASE_URL)
    .addConverterFactory(GsonConverterFactory.create())
    .build();
// create API service
MyApi myApi = retrofit.create(MyApi.class);
// make API call
Call<List<MyObject>> call = myApi.getMyObjects();
call.enqueue(new Callback<List<MyObject>>() {
    @Override
    public void onResponse(Call<List<MyObject>> call, Response<List<MyObject>> response) {
        List<MyObject> myObjects = response.body();
        // convert List<MyObject> to JSON string
        Gson gson = new Gson();
        String jsonString = gson.toJson(myObjects);
    @Override
    public void onFailure(Call<List<MyObject>> call, Throwable t) {
        // handle failure