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SOLVED Qt 5.1 ios How to Bundle and use SQLite database in application

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  • S Offline
    S Offline
    syfy323
    wrote on last edited by
    #16

    [quote author="jraichouni" date="1389032658"]I am using "Qt 5.2.0 (official release)":http://download.qt-project.org/official_releases/qt/5.2/5.2.0/qt-mac-opensource-5.2.0-ios-x86_64-offline.dmg

    I did not create the thread.[/quote]

    Oh, sorry.

    drop this from your file:
    Q_IMPORT_PLUGIN(qsqlite)

    edit for your edit:

    [quote author="jraichouni" date="1389032658"]
    A very short but complete mini project .pro file & main.cpp would help.

    I mean an example, which runs at your computer. I would launch qmake only to get the .xcodeproject directory to test that.[/quote]

    I already did - the code above works as your main() content.

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    • J Offline
      J Offline
      jraichouni
      wrote on last edited by
      #17

      It runs!
      I am a bit confused, as the "Plug & paint example":http://qt-project.org/doc/qt-4.8/tools-plugandpaint.html uses that macro.

      But many thanks for your reply and help!!

      Really interesting would be to be able to use the SQLite Function "load_extension" which is omitted in Standard Qt build.

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      • S Offline
        S Offline
        syfy323
        wrote on last edited by
        #18

        [quote author="jraichouni" date="1389033119"]It runs!
        I am a bit confused, as the "Plug & paint example":http://qt-project.org/doc/qt-4.8/tools-plugandpaint.html uses that macro.

        But many thanks for your reply and help!![/quote]

        You're welcome.

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        • M Offline
          M Offline
          mac131
          wrote on last edited by
          #19

          "A very short but complete mini project .pro file & main.cpp would help.
          I mean an example, which runs at your computer. I would launch qmake only to get the .xcodeproject directory to test that."

          I just start to use QT 5.2 (with iOS even more) a mini exemple project with all files would be great

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          • J Offline
            J Offline
            jraichouni
            wrote on last edited by
            #20

            Hi!

            Take the example in the current thread.

            The important things to consider are:

            .pro file:
            @
            QT += sql
            ios:QTPLUGIN += qsqlite

            deploy the database file via something like:

            databases.files = ../../src/data/xp-apt.sqlite
            ios: databases.path = Documents
            macx: databases.path = Contents/Resources
            QMAKE_BUNDLE_DATA += databases

            note, that the path databases.files is relative to the cwd, in which

            the process qmake runs

            @

            The class implementing the initialisation/ access to the db needs to do the following for instance:
            @
            #include <QtSql>
            (...)

            QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE", "some_name");
            QSqlDatabase db = QSqlDatabase::database("some_name", false);
            QString dbFilePath = "(...)";
            db.setDatabaseName(dbFilePath);
            db.open();
            QSqlQuery *q = new QSqlQuery(db);
            (...)
            @

            Hope that helps!

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            • elliott0124E Offline
              elliott0124E Offline
              elliott0124
              wrote on last edited by
              #21

              Hi!

              I'm follow this example.
              But It doesn't work for me.

              In Desktop, iOS simulator mode is fine.
              But it doesn't work with my iPad.

              Thanks you if you can help me.

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              • J Offline
                J Offline
                jraichouni
                wrote on last edited by
                #22

                I currently work on my work environment and do also have no iPad (iPhone only) but it shall work as described in above posts.

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                • elliott0124E Offline
                  elliott0124E Offline
                  elliott0124
                  wrote on last edited by
                  #23

                  Hi, Jamil

                  Thanks for your feedback.

                  Then I tried with my iPhone5s. And It just work, but my iPadRetina don't.
                  Post QT creator error log above:

                  This plugin does not support propagateSizeHints()
                  &
                  Failed to make complete framebuffer object 8cdd

                  Thanks again for your help.

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                  • elliott0124E Offline
                    elliott0124E Offline
                    elliott0124
                    wrote on last edited by
                    #24

                    [Solved]
                    Update to QT5.2.1, iPad just work fine.

                    Thanks you.

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                    • V Offline
                      V Offline
                      vtong
                      wrote on last edited by
                      #25

                      Hi,
                      Please help. I build my app for iPad, and using database Sqlite.
                      Can you explain the QString dbFilePath = "(...)"; why it is "(...)"
                      Thanks and regards

                      [quote author="Jamil Raichouni" date="1389206294"]Hi!

                      Take the example in the current thread.

                      The important things to consider are:

                      .pro file:
                      @
                      QT += sql
                      ios:QTPLUGIN += qsqlite

                      deploy the database file via something like:

                      databases.files = ../../src/data/xp-apt.sqlite
                      ios: databases.path = Documents
                      macx: databases.path = Contents/Resources
                      QMAKE_BUNDLE_DATA += databases

                      note, that the path databases.files is relative to the cwd, in which

                      the process qmake runs

                      @

                      The class implementing the initialisation/ access to the db needs to do the following for instance:
                      @
                      #include <QtSql>
                      (...)

                      QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE", "some_name");
                      QSqlDatabase db = QSqlDatabase::database("some_name", false);
                      QString dbFilePath = "(...)";
                      db.setDatabaseName(dbFilePath);
                      db.open();
                      QSqlQuery *q = new QSqlQuery(db);
                      (...)
                      @

                      Hope that helps![/quote]

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                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #26

                        It's a placeholder text that you must replace with the path to your database file

                        Interested in AI ? www.idiap.ch
                        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                        • V Offline
                          V Offline
                          vtong
                          wrote on last edited by
                          #27

                          Thanks SGaist,
                          It works now.

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                          • S Offline
                            S Offline
                            SherifOmran
                            wrote on last edited by
                            #28

                            hi every body,

                            i ve the same issue, should this mean that we don't need to use Q_IMPORT_PLUGIN(qsqlite);
                            any more for static compiling?

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