合併程式庫
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
合併是
這個架構可用於結合事件處理運算子來處理非同步事件。
合併功能可讓您集中處理事件處理程式碼,以便讀取及維護程式碼。
GoogleMapsPlatformCombine 程式庫
這個 Swift 程式庫會傳回
Publishers
敬上
Maps SDK for iOS 和 Places SDK for iOS 版本,這樣您就能
更豐富的「合併」功能組合
安裝
查看
GoogleMapsPlatformCombine 程式庫
說明文件,瞭解最新系統需求和安裝操作說明。
使用範例
GoogleMapsPlatformCombine 程式庫包含
GMSMapViewPublisher
類別
包含發布商屬性,可讓您訂閱地圖所引發的事件。
以下範例會設定要訂閱的 GMSMapViewPublisher
例項
攝影機變更事件:
let publisher = GMSMapViewPublisher(mapView: mapView)
publisher.didChangeCameraPosition.sink { cameraPosition in
print("Camera position at \(cameraPosition.target)")
}
後續步驟
除非另有註明,否則本頁面中的內容是採用創用 CC 姓名標示 4.0 授權,程式碼範例則為阿帕契 2.0 授權。詳情請參閱《Google Developers 網站政策》。Java 是 Oracle 和/或其關聯企業的註冊商標。
上次更新時間:2025-08-31 (世界標準時間)。
[null,null,["上次更新時間:2025-08-31 (世界標準時間)。"],[[["\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."]]