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Thread: My project works on Qt Simulator, but not on my real device.

  1. #1
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    Default My project works on Qt Simulator, but not on my real device.

    Here is my project:

    clean.h

    Qt Code:
    1. #include <QtGui/QApplication>
    2. #include "qmlapplicationviewer.h"
    3. #include <QObject>
    4. #include <QApplication>
    5. #include <QDeclarativeView>
    6. #include <QDeclarativeContext>
    7.  
    8. #ifndef CLEAN_H
    9. #define CLEAN_H
    10.  
    11.  
    12. class Clean : public QObject {
    13. Q_OBJECT
    14. public:
    15. explicit Clean(QObject *parent = 0); ~Clean();
    16.  
    17. //void deleteDir();
    18. //void deleteFile();
    19.  
    20. Q_INVOKABLE void clean1();
    21. };
    22.  
    23. #endif // CLEAN_H
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    clean.cpp

    Qt Code:
    1. #include <QtGui/QApplication>
    2. #include "qmlapplicationviewer.h"
    3. #include <QObject>
    4. #include <QApplication>
    5. #include <QDeclarativeView>
    6. #include <QDeclarativeContext>
    7. #include <QFile>
    8. #include <QDir>
    9. #include "clean.h"
    10.  
    11. void deleteDir(const std::string& foldername) {
    12. QDir dir;
    13. dir.remove(foldername.c_str());
    14. }
    15.  
    16. void deleteFile(const std::string& filename) {
    17. QFile file;
    18. file.remove(filename.c_str());
    19. }
    20.  
    21. Clean::Clean(QObject *parent) : QObject(parent) {
    22. }
    23.  
    24. Clean::~Clean() {
    25. }
    26.  
    27. void Clean::clean1() {
    28. deleteDir(e:/data);
    29. deleteFile(e:/qf)
    30. }
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    main.cpp

    Qt Code:
    1. #include "clean.h"
    2.  
    3. int main(int argc, char *argv[])
    4. {
    5. QApplication app(argc, argv);
    6.  
    7. Clean clean;
    8.  
    9. QDeclarativeView view;
    10. view.setResizeMode(QDeclarativeView::SizeRootObjectToView);
    11. view.rootContext()->setContextProperty("Clean", &clean);
    12. view.setSource(QUrl("qml/GCleaner/main.qml"));
    13.  
    14. return app.exec();
    15. }
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    main.qml

    Qt Code:
    1. Button {
    2. id:button
    3. onClicked: Clean.clean1()
    4. }
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    It works very well on Qt Simulator, but not work on my mobile device. I also tried to add qdir.h and qfile.h but it exited with code -1073741819.

    What should I do? Thank you so much for your help.

  2. #2
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    Default Re: My project works on Qt Simulator, but not on my real device.

    What kind of device? What exactly happens?
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

    Please ask Qt related questions on the forum and not using private messages or visitor messages.


  3. The following user says thank you to wysota for this useful post:

    GeorgeDao123 (9th April 2013)

  4. #3
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    Default Re: My project works on Qt Simulator, but not on my real device.

    My device is Nokia E6, OS is Belle.

    When I open this app on phone from Main Menu, it does not show anything. The screen goes blank then the Main Menu is refreshed.

    Thanks for your help.

  5. #4
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    Default Re: My project works on Qt Simulator, but not on my real device.

    I think your program simply crashes. You need to debug it and see what's wrong.
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

    Please ask Qt related questions on the forum and not using private messages or visitor messages.


  6. The following user says thank you to wysota for this useful post:

    GeorgeDao123 (14th April 2013)

  7. #5
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    Default Re: My project works on Qt Simulator, but not on my real device.

    It says that:

    Debugging starts
    QDeclarativeDebugServer: Ignoring "-qmljsdebugger=port:3768,block". Debugging has not been enabled.
    Debugging has finished.

  8. #6
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    Default Re: My project works on Qt Simulator, but not on my real device.

    Try harder
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

    Please ask Qt related questions on the forum and not using private messages or visitor messages.


  9. The following user says thank you to wysota for this useful post:

    GeorgeDao123 (14th April 2013)

  10. #7
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    Default Re: My project works on Qt Simulator, but not on my real device.

    I have tried all things I know but it's still not solved.

    I study Qt myself and no one in my region can help me, sir. Should I go to Qt4.8? The current Qt version that I am using is 4.7.4.

  11. #8
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    Default Re: My project works on Qt Simulator, but not on my real device.

    You should make sure that you build your project in debug mode and that you have prepared your device for debugging. I'm sure there are documents about it in the internet.
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

    Please ask Qt related questions on the forum and not using private messages or visitor messages.


  12. The following user says thank you to wysota for this useful post:

    GeorgeDao123 (14th April 2013)

  13. #9
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    Default Re: My project works on Qt Simulator, but not on my real device.

    Okay sir. I shall try again then tell everything here. Thank you so much for your help.

    Sincerely.

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