The QPlaceContentRequest class represents the parameters of a content request. 更多...
头: | #include <QPlaceContentRequest> |
qmake: | QT += location |
Since: | Qt 5.6 |
该类在 Qt 5.6 引入。
QPlaceContentRequest (const QPlaceContentRequest & other ) | |
QPlaceContentRequest () | |
QPlaceContentRequest & | operator= (const QPlaceContentRequest & other ) |
~QPlaceContentRequest () | |
void | clear () |
QVariant | contentContext () const |
QPlaceContent::Type | contentType () const |
int | limit () const |
QString | placeId () const |
void | setContentContext (const QVariant & context ) |
void | setContentType (QPlaceContent::Type type ) |
void | setLimit (int limit ) |
void | setPlaceId (const QString & 标识符 ) |
bool | operator!= (const QPlaceContentRequest & other ) const |
bool | operator== (const QPlaceContentRequest & other ) const |
The QPlaceContentRequest class is used in conjunction with a QPlaceManager to retrieve rich content like images and reviews in a paginated fashion. The following code would request a set of 5 images from the 10th index:
QPlaceContentRequest request; request.setContentType(QPlaceContent::ImageType); request.setPlaceId(place.placeId()); request.setLimit(5); QPlaceContentReply *contentReply = manager->getPlaceContent(request); //..connect signals..// ... ... void contentHandler() { if (contentReply->error() == QPlaceReply::NoError) { place.insertContent(contentReply->request().contentType(), contentReply->content()); } }
另请参阅 QPlaceContentReply .
构造副本为 other .
Constructs a new request object.
赋值 other to this content request and returns a reference to this content request.
Destroys the request object
Clears the content request.
Returns backend specific additional content context associated with this place content request.
另请参阅 setContentContext ().
Returns the type of content to be requested, for example reviews or images
另请参阅 setContentType ().
Returns the maximum number of content items to retrieve.
A negative value for limit means that it is undefined. It is left up to the backend provider to choose an appropriate number of items to return.
The default limit is -1.
另请参阅 setLimit ().
Returns the identifier of the place content is to be fetched for.
另请参阅 setPlaceId ().
Sets the content context to context .
注意: This method is intended to be used by geo service plugins when returning place content results.
The content context is used by backends to store additional content context related to the content request. Other relevant fields should also be filled in. For example, if the content request is for image content the content type should also be set with setContentType (). The content context allows additional context to be kept which is not directly accessible via the Qt Location API.
The content context can be of any type storable in a QVariant . The value of the content context is not intended to be used directly by applications.
另请参阅 contentContext ().
设置 type of content to be requested.
另请参阅 contentType ().
Set the maximum number of content items to retrieve to limit .
另请参阅 limit ().
Sets the identifier of the place to fetch content for to 标识符 .
另请参阅 placeId ().
返回 true 若 other is not equal to this content request, otherwise returns false.
返回 true 若 other is equal to this content request, otherwise returns false.