QSensor failing to connect to Backend

[sweedyar]

I upgraded the qt.sis and qtmobility.sis files on my Symbian device from 4.6.2 and 1.0.0 to 4.6.3 and 1.0.0(1), respectively. This was the result of upgrading from the Beta to the Release Candidate 1 version of Nokia Qt SDK. Now, however, the following attempt to connect to a sensor backend no longer succeeds.

m_sensor = new QSensor("QAccelerometer");
m_sensor->addFilter(this);
if (m_sensor->connectToBackend())
qDebug("Connected to Backend");
else
qDebug("Did not connect to Backend");


Any ideas on why that might be? Thanks.

[rahulvala]

Backends are created on demands, so how to create the backends, See the below page :

http://doc.qt.nokia.com/qtmobility-1...or-plugin.html

Best regards,

[sweedyar]

When QSensor::connectToBackend() is called, the createBackend() function will be called according to the QSensorManager documentation. Thanks for the link that shows how to create "MyPlugin" class. However, I am trying to use the plugin that is supposed to be included in the upgraded QtMobility that I installed on the Symbian device. The shown code snippet was working when the Beta Nokia Qt SDK was used.

[rahulvala]

When QSensor::connectToBackend() is called, the createBackend() function will be called according to the QSensorManager documentation. Thanks for the link that shows how to create "MyPlugin" class. However, I am trying to use the plugin that is supposed to be included in the upgraded QtMobility that I installed on the Symbian device. The shown code snippet was working when the Beta Nokia Qt SDK was used.

Because the Qt SDK contains the inbuilt Qt mobility API, But for the device you have to add that Qt and Qt mobility libraries,

Best regards,

[sweedyar]

Thanks. As indicated in the initial post, I installed on the device both the new qt.sis and the new qtmobility.sis (i.e., 4.6.3 and 1.0.0(1)). Are you referring to something else that should be added to the device?