Javaのオブジェクト内のジェネリックオブジェクトを逆シリアル化します

デシリアライザーにジェネリッククラスを含むクラスを作成するには、AsyncTaskを拡張するTのインスタンスを使用してクラスを作成し（UIスレッドの非同期サーバーからJsonを取得するため）、JSONObject AND GsonLibraryを使用してクラスを2つに分割しましたパーツ：クラス自体と内部のジェネリック。次に、2つの要素として戻ります。

これが私のクラスです：

public class RestClient<t>  extends AsyncTask<String, String, String> {

private Class<t> tClass;

private t returnGenericObject;
private WebApiReturn webApiReturn;

private AsyncCallback callback;

public RestClient(Class<t> tClass)
{
    //The instance of the class you want
    this.tClass = tClass;
    webApiReturn= new WebApiReturn();
}

//You get the WebApiReturn with this method
public WebApiReturn getWebApiReturn(){
    return webApiReturn;
}

//You get the inside generic object with this method
public Object getObjectResponse(){
    return returnGenericObject;
}


@Override
protected String doInBackground(String... OnlyTheURL) {
    String urlString = OnlyTheURL[0];
    try {
        URL url = new URL(urlString);

        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("GET");

        connection.connect();

        String result = convertStreamToString(connection.getInputStream()); //A function to convert Stream to String...

        connection.disconnect();

        //Created a JSONObject from the result of the connection
        JSONObject jsonObject = new JSONObject(result);

        //Don't set the Generic Object because it will crash when you try to get back
        webApiReturn.setHasError(jsonObject.getBoolean("hasError"));
        webApiReturn.setErrorMessage (jsonObject.getString("errorMessage"));
        webApiReturn.setErrorCode(jsonObject.getString("errorCode"));

        //Get the String of the generic object within the WebApiReturn
        String obj = jsonObject.get("objetoRetorno").toString();
        //With Gson convert it to the class you expect (that you instanciated in the constructor)
        Gson gson = new Gson();
        ObjetoDeRetorno = gson.fromJson(obj, tClass);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}

そして、あなたがそれを呼びたいところ、あなたはちょうどこのようにします：

RestClient<YourObject> restClient = new RestClient<>(YourObject.class);
restClient.execute();
Thread.sleep(5000); //You can do this other better ways, but just as example I'm doing this...

//After the execution you get your objects:
WebApiReturn return = getWebApiReturn();
YourObject object = (YourObject) restClient.getObjectResponse();