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

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  • T Offline
    T Offline
    TobbY
    wrote on last edited by
    #1

    I'm working on a project where I have to download file to phone memory. pls any help??

    thanks

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    • D Offline
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      DenisKormalev
      wrote on last edited by
      #2

      I think that you can use same approaches as at desktop, why not? You have some path in phone filesystem, you have url. All is the same.

      P.S. Moved to more appropriate category.

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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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        • D Offline
          D Offline
          DenisKormalev
          wrote on last edited by
          #4

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

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          • L Offline
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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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            • T Offline
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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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              • L Offline
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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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                • T Offline
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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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                  • L Offline
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                    loladiro
                    wrote on last edited by
                    #9

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

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                    • T Offline
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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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                      • D Offline
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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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                        • T Offline
                          T Offline
                          TobbY
                          wrote on last edited by
                          #12

                          thanks for help

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                          • A Offline
                            A Offline
                            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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                            • L Offline
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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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