Slot connect/disconnect in network application

[ingido]

Hello!
I have an network (basically chat) application in development.
App have ApiHandler class which handles api requests. And other classes which interacts and update views after specific request has finished.
I "dynamically" connect and disconnect slots for each specific request. But only first will called.
Example of usage:

void Friends::getFriends()
{
    ApiHandler* a = new ApiHandler();

    connect(a->getManager(), SIGNAL(finished(QNetworkReply*)), this, SLOT(getFriendsFinished(QNetworkReply*)));

    a->makeRequest("getFriends", m); // m - parameters
}

getFriendsFinished

void Friends::getFriendsFinished(QNetworkReply* reply)
{
    // Process and update view...

    // Cleanup
    reply->deleteLater();

    ApiHandler* a = new ApiHandler();

    // Disconnects a slot
    disconnect(a->getManager(), SIGNAL(finished(QNetworkReply*)), this, SLOT(getFriendsFinished(QNetworkReply*)));
}

But when i start another request from different classes, new connected slots never called. What is the best way to do this?

[A Former User]

Hi! In your connect and disconnect statements, you're not using the same ApiHandler instance but two different ones. You need to store a as a member variable of Friends and use only that one. Something like e.g.:

class Friend :
{
// ...
private:
    ApiHandler m_apiHandler;
};

// ...

void Friends::getFriends()
{
   connect(m_apiHandler.getManager(), SIGNAL(finished(QNetworkReply*)), this, SLOT(getFriendsFinished(QNetworkReply*)));

// ...


void Friends::getFriendsFinished(QNetworkReply* reply)
{
   disconnect(m_apiHandler.getManager(), SIGNAL(finished(QNetworkReply*)), this, SLOT(getFriendsFinished(QNetworkReply*)));

[ingido]

@Wieland thanks for reply! Already tried, but slots not called anyway. Only first connection for one time.
Here the ApiHandler class

class ApiHandler : public QObject
{
    Q_OBJECT

public:
    explicit ApiHandler(QObject *parent = 0);
    QNetworkReply* makeRequest(QString method, QMap<QString, QString> parameters);
    QNetworkAccessManager* getManager() {
        static QNetworkAccessManager* nam = new QNetworkAccessManager;
        return nam;
    }
private:
    QUrl buildCall(QString method, QMap<QString, QString> parameters);

signals:

public slots:
    void replyFinished(QNetworkReply* reply);
    void slotReadyRead();
    void slotError(QNetworkReply::NetworkError error);
    void slotSslErrors(QList<QSslError> errorList);
};

Here the Friends class

class Friends : public QObject
{
    Q_OBJECT
public:
    explicit Friends(QObject *parent = 0);
    void getFriends();

signals:

public slots:
    void getFriendsFinished(QNetworkReply* reply);

};

And here the usage

Friends friends;

friends.getFriends();