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Combina è un
per la gestione degli eventi asincroni mediante la combinazione di operatori di elaborazione degli eventi.
L'unione semplifica la lettura e la gestione del codice centralizzando il codice di elaborazione degli eventi.
La libreria GoogleMapsPlatformCombine
è una libreria Swift che restituisce
Publishers:
per Maps SDK for iOS e Places SDK per iOS per consentirti di sfruttare
del ricco set di funzionalità Combina.
Installazione
Visualizza la
libreria GoogleMapsPlatformCombine
documentazione su GitHub per i requisiti di sistema e le istruzioni di installazione più recenti.
Esempio di utilizzo
La libreria GoogleMapsPlatformCombine include
Corso GMSMapViewPublisher
che contiene le proprietà del publisher che ti consentono di iscriverti agli eventi emessi dalla mappa.
L'esempio seguente configura un'istanza GMSMapViewPublisher a cui eseguire la sottoscrizione
Eventi di modifica della videocamera:
let publisher = GMSMapViewPublisher(mapView: mapView)
publisher.didChangeCameraPosition.sink { cameraPosition in
print("Camera position at \(cameraPosition.target)")
}
Passaggi successivi
Salvo quando diversamente specificato, i contenuti di questa pagina sono concessi in base alla licenza Creative Commons Attribution 4.0, mentre gli esempi di codice sono concessi in base alla licenza Apache 2.0. Per ulteriori dettagli, consulta le norme del sito di Google Developers. Java è un marchio registrato di Oracle e/o delle sue consociate.
Ultimo aggiornamento 2025-08-31 UTC.
[null,null,["Ultimo aggiornamento 2025-08-31 UTC."],[[["\u003cp\u003eGoogleMapsPlatformCombine is a Swift library that integrates the Maps SDK for iOS and Places SDK for iOS with Apple's Combine framework.\u003c/p\u003e\n"],["\u003cp\u003eThis library provides Publishers for various SDK functionalities, allowing developers to leverage Combine's features for asynchronous event handling.\u003c/p\u003e\n"],["\u003cp\u003eBy using GoogleMapsPlatformCombine, developers can simplify their code and centralize event-processing logic for Google Maps and Places SDKs within their applications.\u003c/p\u003e\n"],["\u003cp\u003eA practical example demonstrates subscribing to camera change events on a \u003ccode\u003eGMSMapView\u003c/code\u003e using the \u003ccode\u003eGMSMapViewPublisher\u003c/code\u003e and Combine's \u003ccode\u003esink\u003c/code\u003e operator.\u003c/p\u003e\n"]]],["The content introduces the GoogleMapsPlatformCombine library, which utilizes Apple's Combine framework for handling asynchronous events within the Google Maps and Places SDKs for iOS. It leverages `Publishers` to manage events. A key action is demonstrated through the `GMSMapViewPublisher` class, allowing users to subscribe to map events. An example illustrates how to monitor camera position changes using the `didChangeCameraPosition` publisher. Installation instructions and further details are available on the library's GitHub page.\n"],null,["[Combine](https://developer.apple.com/documentation/combine) is a\nframework for handling asynchronous events by combining event-processing operators.\nCombine makes your code easier to read and maintain by centralizing your event-processing code.\n\nThe [GoogleMapsPlatformCombine library](https://github.com/googlemaps/ios-combine)\nis a Swift library that returns\n[`Publishers`](https://developer.apple.com/documentation/combine/publisher)\nfor the Maps SDK for iOS and Places SDK for iOS so that you can take advantage\nof the rich set of Combine features.\n\nInstallation See the [GoogleMapsPlatformCombine library](https://github.com/googlemaps/ios-combine) documentation on GitHub for the latest system requirements and installation instructions.\n\n\u003cbr /\u003e\n\nExample Usage\n\nThe GoogleMapsPlatformCombine library includes the\n[`GMSMapViewPublisher`](https://github.com/googlemaps/ios-combine/blob/main/Sources/Maps/GMSMapViewPublisher.swift) class\nwhich contains publisher properties that let you subscribe to events emitted by the map.\n\nThe following example configures a `GMSMapViewPublisher` instance to subscribe to\ncamera change events: \n\n```yaml\nlet publisher = GMSMapViewPublisher(mapView: mapView)\npublisher.didChangeCameraPosition.sink { cameraPosition in\n print(\"Camera position at \\(cameraPosition.target)\")\n}\n```\n\nWhat's next\n\n- View the [Combine library](https://github.com/googlemaps/ios-combine) GitHub project page."]]
