PlaceAttribute QML Type

The PlaceAttribute type holds generic place attribute information. 更多...

import 语句：	import QtLocation 5.12
Since:	QtLocation 5.5

所有成员列表，包括继承成员

特性

属性 : QPlaceAttribute
label : string
text : string

详细描述

A place attribute stores an additional piece of information about a Place that is not otherwise exposed through the Place type. A PlaceAttribute is a textual piece of data, accessible through the text property, and a label . Both the text and label properties are intended to be displayed to the user. PlaceAttributes are stored in an ExtendedAttributes map with a unique key.

The following example shows how to display all attributes in a list:

import QtQuick 2.0
import QtPositioning 5.5
import QtLocation 5.6
ListView {
    model: place.extendedAttributes.keys()
    delegate: Text {
        text: "<b>" + place.extendedAttributes[modelData].label + ": </b>" +
              place.extendedAttributes[modelData].text
    }
}

The following example shows how to assign and modify an attribute:

    //assign a new attribute to a place
    var smokingAttrib = Qt.createQmlObject('import QtLocation 5.3; PlaceAttribute {}', place);
    smokingAttrib.label = "Smoking Allowed"
    smokingAttrib.text = "No"
    place.extendedAttributes.smoking = smokingAttrib;
    //modify an existing attribute
    place.extendedAttributes.smoking.text = "Yes"

特性文档编制

属性 : QPlaceAttribute

For details on how to use this property to interface between C++ and QML see " Interfaces between C++ and QML Code ".

label : string

This property holds the attribute label which is a user visible string describing the attribute.

text : string

This property holds the attribute text which can be used to show additional information about the place.