diff options
Diffstat (limited to 'src/plugins/sensors/ios/iosgyroscope.mm')
-rw-r--r-- | src/plugins/sensors/ios/iosgyroscope.mm | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/plugins/sensors/ios/iosgyroscope.mm b/src/plugins/sensors/ios/iosgyroscope.mm index fa051da..0a4699c 100644 --- a/src/plugins/sensors/ios/iosgyroscope.mm +++ b/src/plugins/sensors/ios/iosgyroscope.mm @@ -38,6 +38,8 @@ char const * const IOSGyroscope::id("ios.gyroscope"); QT_BEGIN_NAMESPACE +int IOSGyroscope::s_startCount = 0; + IOSGyroscope::IOSGyroscope(QSensor *sensor) : QSensorBackend(sensor) , m_motionManager([QIOSMotionManager sharedManager]) @@ -50,16 +52,24 @@ IOSGyroscope::IOSGyroscope(QSensor *sensor) void IOSGyroscope::start() { + if (m_timer != 0) + return; + int hz = sensor()->dataRate(); m_timer = startTimer(1000 / (hz == 0 ? 60 : hz)); - [m_motionManager startGyroUpdates]; + if (++s_startCount == 1) + [m_motionManager startGyroUpdates]; } void IOSGyroscope::stop() { - [m_motionManager stopGyroUpdates]; + if (m_timer == 0) + return; + killTimer(m_timer); m_timer = 0; + if (--s_startCount == 0) + [m_motionManager stopGyroUpdates]; } void IOSGyroscope::timerEvent(QTimerEvent *) |