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  4. [SOLVED] download file from link to phone memory using qt???

[SOLVED] download file from link to phone memory using qt???

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  • T Offline
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    TobbY
    wrote on last edited by
    #3

    can you provide how to save?? i dont know???

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      DenisKormalev
      wrote on last edited by
      #4

      Read Qt Assistant about QNetworkAccessManager. I think it will help you.

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        loladiro
        wrote on last edited by
        #5

        Use "QNetworkAccessManager":http://doc.qt.nokia.com/4.7/qnetworkaccessmanager.html . QNetworkReply inherits QIODevice and I think you should be able to go from there.

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          TobbY
          wrote on last edited by
          #6

          sorry it does nt help me where to save??? any other option

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            loladiro
            wrote on last edited by
            #7

            Not tested, but:
            @
            class MyClass : public QObject
            {
            Q_OBJECT
            public:
            MyClass(QObject *parent = 0) : QObject(parent), manager(new QNetworkAccessManager)
            {
            reply = manager->get(QNetworkRequest(QUrl("http://example.com")));
            connect(reply,SIGNAL(finished()),SLOT(downloaded()));
            }

            public slots:
            void downloaded()
            {
            QFile file("/path/to/file");
            file.open(QIODevice::WriteOnly);
            file.write(reply.readAll());
            file.close();
            }

            private:
            QNetworkAccessManager *manager;
            QNetworkReply *reply;
            }
            @

            EDIT: fixed example

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              TobbY
              wrote on last edited by
              #8

              have to tried it to download file larger than 2 MB.???

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                loladiro
                wrote on last edited by
                #9

                Yes, I just did. Works like a charm :)

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                  TobbY
                  wrote on last edited by
                  #10

                  yes, it works great, now i am trying to add progressbar to show how much download is completed.

                  have you any idea??

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                    DenisKormalev
                    wrote on last edited by
                    #11

                    Use QProgressDialog or implement one by yourself. Qt Assitant and Qt examples contain all info that you need. Try to use them.

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                      TobbY
                      wrote on last edited by
                      #12

                      thanks for help

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                        abcth134
                        wrote on last edited by
                        #13

                        i insert this in the mainwindows.cpp:
                        @
                        MainWindow(QMainWindowparent = 0) : QMainWindow(parent), manager(new QNetworkAccessManager)
                        {
                        reply = manager->get(QNetworkRequest(QUrl("http://example.com")));
                        connect(reply,SIGNAL(finished()),SLOT(downloaded()));
                        }
                        @
                        and i get an error: C:\Users\zanotti\aaa-build-desktop..\aaa\mainwindow.cpp:29: error: expected ')' before '=' token

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                          loladiro
                          wrote on last edited by
                          #14

                          It should be more like:
                          @MainWindow::MainWindow(QWidget *parent = 0) : QMainWindow(parent), manager(new QNetworkAccessManager)
                          {
                          reply = manager->get(QNetworkRequest(QUrl("http://example.com")));
                          connect(reply,SIGNAL(finished()),SLOT(downloaded()));
                          }@

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