Android上Qt 5.3 RC中的Qt定位错误
我正在Android上的Qt5.3RC中试验Qt定位。 这是我的代码示例,我在其中创建位置和卫星源:Android上Qt 5.3 RC中的Qt定位错误,android,c++,qt5,Android,C++,Qt5,我正在Android上的Qt5.3RC中试验Qt定位。 这是我的代码示例,我在其中创建位置和卫星源: QGeoPositionInfoSource *source = QGeoPositionInfoSource::createDefaultSource(this); if (source) { QStringList posSourcesList = QGeoPositionInfoSource::availableSources(); qDebug()
QGeoPositionInfoSource *source = QGeoPositionInfoSource::createDefaultSource(this);
if (source) {
QStringList posSourcesList = QGeoPositionInfoSource::availableSources();
qDebug() << "Position sources count: " << posSourcesList.count();
foreach (const QString &src, posSourcesList) {
qDebug() << "pos source in list: " << src;
}
source->startUpdates();
connect(source, SIGNAL(positionUpdated(QGeoPositionInfo)),
this, SLOT(positionUpdated(QGeoPositionInfo)));
}
//----------------------------------------------------------------------------------
QGeoSatelliteInfoSource *satelliteSource = QGeoSatelliteInfoSource::createDefaultSource(this);
if(satelliteSource)
{
QStringList sourcesList = QGeoSatelliteInfoSource::availableSources();
qDebug() << "Satellites sources count: " << sourcesList.count();
foreach (const QString &src, sourcesList) {
qDebug() << "source in list: " << src;
}
satelliteSource->startUpdates();
connect(satelliteSource, SIGNAL(satellitesInViewUpdated(QList<QGeoSatelliteInfo>)),
this, SLOT(satellitesInViewUpdated(QList<QGeoSatelliteInfo>)));
}
以下是回溯:
0 ?? /home/qtproj/build-test_GPS-Android_for_armeabi_v7a_GCC_4_8_Qt_5_3_0-Debug/libc.so 0x4010a8e8
1 abort /home/qtproj/build-test_GPS-Android_for_armeabi_v7a_GCC_4_8_Qt_5_3_0-Debug/libc.so 0x40108948
2 QMessageLogger::fatal(char const*, ...) const /opt/Qt-5.3.0_rc/5.3/android_armv7/lib/libQt5Core.so 0x75357ff6
3 satelliteUpdated(_JNIEnv*, _jobject*, _jobjectArray*, int, unsigned char) /opt/Qt-5.3.0_rc/5.3/android_armv7/plugins/position/libqtposition_android.so 0x751a8c08
4 ?? 0x40b3a910
5 ?? 0x40b3a910
当我仅创建QGeoPositionFoSource或QGeoSatelliteInfoSource时,不会发生此错误。
有什么建议吗?5.3.1中仍然存在相同的错误。我没有解释,但这里的解决方法是更改源代码的初始化顺序
QGeoSatelliteInfoSource *satelliteSource = QGeoSatelliteInfoSource::createDefaultSource(this);
if(satelliteSource) {
QStringList sourcesList = QGeoSatelliteInfoSource::availableSources();
qDebug() << "Satellites sources count: " << sourcesList.count();
foreach (const QString &src, sourcesList) {
qDebug() << "source in list: " << src;
}
satelliteSource->startUpdates();
connect(satelliteSource, SIGNAL(satellitesInViewUpdated(QList<QGeoSatelliteInfo>)),
this, SLOT(satellitesInViewUpdated(QList<QGeoSatelliteInfo>)));
}
QGeoPositionInfoSource *source = QGeoPositionInfoSource::createDefaultSource(this);
if (source) {
QStringList posSourcesList = QGeoPositionInfoSource::availableSources();
qDebug() << "Position sources count: " << posSourcesList.count();
foreach (const QString &src, posSourcesList) {
qDebug() << "pos source in list: " << src;
}
source->startUpdates();
connect(source, SIGNAL(positionUpdated(QGeoPositionInfo)),
this, SLOT(positionUpdated(QGeoPositionInfo)));
}
qgeostelliteinfosource*satelliteSource=qgeostelliteinfosource::createDefaultSource(此);
if(卫星源){
QStringList sourcesList=QGeoSatelliteInfoSource::availableSources();
qDebug()
QGeoSatelliteInfoSource *satelliteSource = QGeoSatelliteInfoSource::createDefaultSource(this);
if(satelliteSource) {
QStringList sourcesList = QGeoSatelliteInfoSource::availableSources();
qDebug() << "Satellites sources count: " << sourcesList.count();
foreach (const QString &src, sourcesList) {
qDebug() << "source in list: " << src;
}
satelliteSource->startUpdates();
connect(satelliteSource, SIGNAL(satellitesInViewUpdated(QList<QGeoSatelliteInfo>)),
this, SLOT(satellitesInViewUpdated(QList<QGeoSatelliteInfo>)));
}
QGeoPositionInfoSource *source = QGeoPositionInfoSource::createDefaultSource(this);
if (source) {
QStringList posSourcesList = QGeoPositionInfoSource::availableSources();
qDebug() << "Position sources count: " << posSourcesList.count();
foreach (const QString &src, posSourcesList) {
qDebug() << "pos source in list: " << src;
}
source->startUpdates();
connect(source, SIGNAL(positionUpdated(QGeoPositionInfo)),
this, SLOT(positionUpdated(QGeoPositionInfo)));
}