QGeoSatelliteInfoSource ¶

概要 ¶

详细描述 ¶

The static function createDefaultSource() creates a default satellite data source that is appropriate for the platform, if one is available. Otherwise, available QGeoPositionInfoSourceFactory plugins will be checked for one that has a satellite data source available.

调用 startUpdates() and stopUpdates() to start and stop regular updates, or requestUpdate() to request a single update. When an update is available, satellitesInViewUpdated() and/or satellitesInUseUpdated() 会被发射。

If regular satellite updates are required, setUpdateInterval() can be used to specify how often these updates should be emitted. If no interval is specified, updates are simply provided whenever they are available. For example:

// Emit updates every 10 seconds if available
QGeoSatelliteInfoSource *source = QGeoSatelliteInfoSource::createDefaultSource(0);
if (source)
    source->setUpdateInterval(10000);
											

To remove an update interval that was previously set, call setUpdateInterval() with a value of 0.

Note that the satellite source may have a minimum value requirement for update intervals, as returned by minimumUpdateInterval() .

class QGeoSatelliteInfoSource ( parent ) ¶

参数

parent – QObject

PySide2.QtPositioning.QGeoSatelliteInfoSource. Error ¶

The Error enumeration represents the errors which can occur.

常量	描述
QGeoSatelliteInfoSource.AccessError	The connection setup to the satellite backend failed because the application lacked the required privileges.
QGeoSatelliteInfoSource.ClosedError	The satellite backend closed the connection, which happens for example in case the user is switching location services to off. This object becomes invalid and should be deleted. A new satellite source can be created by calling createDefaultSource() later on.
QGeoSatelliteInfoSource.NoError	没有发生错误。
QGeoSatelliteInfoSource.UnknownSourceError	发生无法识别的错误。

static PySide2.QtPositioning.QGeoSatelliteInfoSource. availableSources ( ) ¶

返回类型

字符串列表

Returns a list of available source plugins, including the default system backend if one is available.

static PySide2.QtPositioning.QGeoSatelliteInfoSource. createDefaultSource ( parent ) ¶

参数

parent – QObject

返回类型

QGeoSatelliteInfoSource

Creates and returns a source with the specified parent that reads from the system’s default source of satellite update information, or the highest priority available plugin.

Returns 0 if the system has no default satellite source, no valid plugins could be found or the user does not have the permission to access the satellite data.

static PySide2.QtPositioning.QGeoSatelliteInfoSource. createDefaultSource ( 参数 , parent ) ¶

参数

• 参数 –

• parent – QObject

返回类型

QGeoSatelliteInfoSource

Creates and returns a satellite source with the given parent that reads from the system’s default sources of satellite data, or the plugin with the highest available priority.

Returns nullptr if the system has no default satellite source, no valid plugins could be found or the user does not have the permission to access the satellite information.

This method passes 参数 to the factory to configure the source.

static PySide2.QtPositioning.QGeoSatelliteInfoSource. createSource ( sourceName , parent ) ¶

参数

• sourceName – unicode

• parent – QObject

返回类型

QGeoSatelliteInfoSource

Creates and returns a source with the given parent , by loading the plugin named sourceName .

Returns 0 if the plugin cannot be found.

static PySide2.QtPositioning.QGeoSatelliteInfoSource. createSource ( sourceName , 参数 , parent ) ¶

参数

• sourceName – unicode

• 参数 –

• parent – QObject

返回类型

QGeoSatelliteInfoSource

Creates and returns a satellite source with the given parent , by loading the plugin named sourceName .

Returns nullptr if the plugin cannot be found.

This method passes 参数 to the factory to configure the source.

PySide2.QtPositioning.QGeoSatelliteInfoSource. error ( ) ¶

返回类型

Error

返回上次发生的错误。

This signal is not emitted when a requestTimeout() has occurred.

PySide2.QtPositioning.QGeoSatelliteInfoSource. error ( arg__1 ) ¶

参数

arg__1 – Error

PySide2.QtPositioning.QGeoSatelliteInfoSource. minimumUpdateInterval ( ) ¶

返回类型

int

PySide2.QtPositioning.QGeoSatelliteInfoSource. requestTimeout ( ) ¶

PySide2.QtPositioning.QGeoSatelliteInfoSource. requestUpdate ( [ timeout=0 ] ) ¶

参数

timeout – int

Attempts to get the current satellite information and emit satellitesInViewUpdated() and satellitesInUseUpdated() with this information. If the current satellite information cannot be found within the given timeout (in milliseconds) or if timeout is less than the value returned by minimumUpdateInterval() , requestTimeout() is emitted.

If the timeout is zero, the timeout defaults to a reasonable timeout period as appropriate for the source.

This does nothing if another update request is in progress. However it can be called even if startUpdates() has already been called and regular updates are in progress.

PySide2.QtPositioning.QGeoSatelliteInfoSource. satellitesInUseUpdated ( satellites ) ¶

参数

satellites –

PySide2.QtPositioning.QGeoSatelliteInfoSource. satellitesInViewUpdated ( satellites ) ¶

参数

satellites –

PySide2.QtPositioning.QGeoSatelliteInfoSource. setUpdateInterval ( msec ) ¶

参数

msec – int

另请参阅

updateInterval()

PySide2.QtPositioning.QGeoSatelliteInfoSource. sourceName ( ) ¶

返回类型

unicode

Returns the unique name of the satellite source implementation in use.

This is the same name that can be passed to createSource() in order to create a new instance of a particular satellite source implementation.

PySide2.QtPositioning.QGeoSatelliteInfoSource. startUpdates ( ) ¶

Starts emitting updates at regular intervals. The updates will be provided whenever new satellite information becomes available.

If satellite information cannot be retrieved or some other form of timeout has occurred the satellitesInViewUpdated() and satellitesInUseUpdated() signals may be emitted with empty parameter lists.

另请参阅

satellitesInViewUpdated() satellitesInUseUpdated()

PySide2.QtPositioning.QGeoSatelliteInfoSource. stopUpdates ( ) ¶

Stops emitting updates at regular intervals.

PySide2.QtPositioning.QGeoSatelliteInfoSource. updateInterval ( ) ¶

返回类型

int

另请参阅

setUpdateInterval()