小编Jud*_*ith的帖子

我有一个小班不能正常工作,我不知道它有什么问题.编译器给出了以下消息:

main.cpp: error: undefined reference to 'CDetails::CDetails()'

这是代码中的快照:

//main.cpp
#include <QtGui/QGuiApplication>
#include "qtquick2applicationviewer.h"
#include <QQmlContext>
#include <QDebug>

class CDetails : public QObject
{   Q_OBJECT
    public:
        CDetails() {}
        ~CDetails(void) {}


    public slots:
        void cppSlot(const QString &msg)
        {    qDebug() << "Called the C++ slot with message:" << msg;
        }
};

int main(int argc, char *argv[])
{   QGuiApplication app(argc, argv);
    QtQuick2ApplicationViewer viewer;
    viewer.setMainQmlFile(QStringLiteral("qml/testqml/main.qml"));
    viewer.showExpanded();

    CDetails *test = new CDetails();
    QObject::connect((QObject*)viewer.rootObject(),
                 SIGNAL(qmlSignal(QString)),test,
                 SLOT(cppSlot(QString)));
    return app.exec();
}

在main.qml中:

import QtQuick 2.0
Rectangle {
    id: guide …

我正在开发Android应用程序.开发是在Linux上完成的,使用Qt Creator和C++和QML.

当我在一整天中拔掉我的头发并且那件事似乎不太明显时,我想知道是否有人对调试器刷新的错误有任何线索:

Could not load shared library symbols for 85 libraries, e.g. /system/bin/linker.

W/Qt      (24399): kernel/qcoreapplication.cpp:418
    (QCoreApplicationPrivate::QCoreApplicationPrivate(int&, char**, uint)): WARNING: QApplication was 
        not created in the main() thread.

D/libEGL  (24399): loaded /system/lib/egl/libEGL_tegra.so
D/libEGL  (24399): loaded /system/lib/egl/libGLESv1_CM_tegra.so
D/libEGL  (24399): loaded /system/lib/egl/libGLESv2_tegra.so
D/OpenGLRenderer(24399): Enabling debug mode 0
I/Choreographer(24399): Skipped 35 frames!  The application may be doing 
    too much work on its main thread.
D/Qt      (24399): qtcpserverconnection.cpp:173 (void QTcpServerConnection::listen()): QML Debugger:
    Waiting for connection on port 48309...
D/dalvikvm(24399): GC_CONCURRENT freed 396K, 6% …