QGeoRouteReply ¶

概要 ¶

详细描述 ¶

Instances of QGeoRouteReply manage the state and results of these operations.

isFinished() , error() and errorString() methods provide information on whether the operation has completed and if it completed successfully.

finished() and error( Error , QString ) signals can be used to monitor the progress of the operation.

It is possible that a newly created QGeoRouteReply may be in a finished state, most commonly because an error has occurred. Since such an instance will never emit the finished() or error( Error , QString ) signals, it is important to check the result of isFinished() before making the connections to the signals. The documentation for QGeoRoutingManager demonstrates how this might be carried out.

If the operation completes successfully the results will be able to be accessed with routes() .

class QGeoRouteReply ( error , errorString [ , parent=None ] ) ¶

QGeoRouteReply(request[, parent=None])

param parent

QObject

param request

QGeoRouteRequest

param errorString

unicode

param error

Error

Constructs a route reply with a given error and errorString and the specified parent .

Constructs a route reply object based on request , with the specified parent .

PySide2.QtLocation.QGeoRouteReply. Error ¶

Describes an error which prevented the completion of the operation.

常量	描述
QGeoRouteReply.NoError	没有发生错误。
QGeoRouteReply.EngineNotSetError	The routing manager that was used did not have a QGeoRoutingManagerEngine instance associated with it.
QGeoRouteReply.CommunicationError	An error occurred while communicating with the service provider.
QGeoRouteReply.ParseError	The response from the service provider was in an unrecognizable format.
QGeoRouteReply.UnsupportedOptionError	The requested operation or one of the options for the operation are not supported by the service provider.
QGeoRouteReply.UnknownError	An error occurred which does not fit into any of the other categories.

PySide2.QtLocation.QGeoRouteReply. abort ( ) ¶

Cancels the operation immediately.

This will do nothing if the reply is finished.

PySide2.QtLocation.QGeoRouteReply. aborted ( ) ¶

PySide2.QtLocation.QGeoRouteReply. addRoutes ( routes ) ¶

参数

routes –

追加列表 routes to the existing list.

PySide2.QtLocation.QGeoRouteReply. error ( ) ¶

返回类型

Error

Returns the error state of this reply.

If the result is NoError then no error has occurred.

另请参阅

setError()

PySide2.QtLocation.QGeoRouteReply. error ( error [ , errorString="" ] ) ¶

参数

• error – Error

• errorString – unicode

PySide2.QtLocation.QGeoRouteReply. errorString ( ) ¶

返回类型

unicode

Returns the textual representation of the error state of this reply.

If no error has occurred this will return an empty string. It is possible that an error occurred which has no associated textual representation, in which case this will also return an empty string.

To determine whether an error has occurred, check to see if error() 等于 NoError .

PySide2.QtLocation.QGeoRouteReply. finished ( ) ¶

PySide2.QtLocation.QGeoRouteReply. isFinished ( ) ¶

返回类型

bool

Return true if the operation completed successfully or encountered an error which cause the operation to come to a halt.

PySide2.QtLocation.QGeoRouteReply. request ( ) ¶

返回类型

QGeoRouteRequest

Returns the route request which specified the route.

PySide2.QtLocation.QGeoRouteReply. routes ( ) ¶

返回类型

Returns the list of routes which were requested.

另请参阅

setRoutes()

PySide2.QtLocation.QGeoRouteReply. setError ( error , errorString ) ¶

参数

• error – Error

• errorString – unicode

Sets the error state of this reply to error and the textual representation of the error to errorString .

This will also cause error() and finished() signals to be emitted, in that order.

另请参阅

error()

PySide2.QtLocation.QGeoRouteReply. setFinished ( finished ) ¶

参数

finished – bool

Sets whether or not this reply has finished to finished .

若 finished is true, this will cause the finished() signal to be emitted.

If the operation completed successfully, setRoutes() should be called before this function. If an error occurred, setError() should be used instead.

另请参阅

finished()

PySide2.QtLocation.QGeoRouteReply. setRoutes ( routes ) ¶

参数

routes –

Sets the list of routes in the reply to routes .

另请参阅

routes()