實作 Navigation SDK 的主要方式是使用 Google 導航體驗，這項功能可讓您嵌入行車路線導航體驗，並使用 Google 提供的 UI 元素和視覺效果，與 Google 地圖應用程式中的導航體驗類似。如果 Google 導覽體驗無法滿足您的需求，您可以實作自訂導覽體驗。自訂導覽體驗是指任何導覽方式，包括完全取消轉彎指引，只在背景執行導覽，或是將高度自訂的指引體驗投放到執行導覽的裝置以外的螢幕。透過自訂導覽體驗，應用程式會呼叫 Navigation SDK，要求提供逐步導覽動態饋給，然後您提供及管理使用者在導覽體驗中看到的 UI 元素和視覺效果。雖然使用 Google 導覽體驗通常較容易實作，但自行建構自訂導覽體驗可提供更多自訂選項。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-08-17 (世界標準時間)。"],[[["\u003cp\u003eThe Navigation SDK offers a custom navigation experience for greater flexibility beyond the standard Google navigation experience.\u003c/p\u003e\n"],["\u003cp\u003eCustom navigation involves managing UI elements and visuals, starting navigation sessions, listening for events, and ending navigation.\u003c/p\u003e\n"],["\u003cp\u003eCustom experiences are suitable for scenarios like text-only guidance, Carplay integration, or combining overview maps with minimal turn-by-turn guidance.\u003c/p\u003e\n"],["\u003cp\u003eDevelopers can access the turn-by-turn data feed and detailed navigation events to create highly customized navigation interfaces.\u003c/p\u003e\n"]]],[],null,["The Navigation SDK provides different ways to integrate a navigation\nexperience into your app. This page explains what a custom navigation experience\nis and how it differs from other navigation experiences that are available in\nthe Navigation SDK.\n\nWhat is a custom navigation experience?\n\nThe primary way to implement the Navigation SDK is to use the [Google\nnavigation\nexperience](/maps/documentation/navigation/ios-sdk/intro-google-nav),\nwhich lets you embed a turn-by-turn navigation experience that uses\nGoogle-provided UI elements and visuals --- similar to the navigation experience\nwithin the Google Maps apps. If you need more flexibility than the Google\nnavigation experience offers, you can implement a custom navigation experience.\nA custom navigation experience refers to anything from eliminating turn guidance\nentirely with and running navigation only as a background process, to projecting\na highly customized guidance experience to a screen separate from the device\nthat runs the navigation. With a custom navigation experience, your app calls\nthe Navigation SDK to request a turn-by-turn navigation feed, and then\nyou provide and manage the UI elements and visuals that the user sees in the\nnavigation experience. While using the Google navigation experience is generally\neasier to implement, building your own custom navigation experience allows for\nmore customization.\n\nWhen you create a custom navigation experience, your app calls the Navigation\nSDK to start, run, and stop navigation, using the following flow:\n\n1. **Start navigation** . As with the Google navigation experience, a custom\n navigation experience still involves creating a navigation instance and\n setting the destination. However, with a customized navigation experience,\n you achieve this by first establishing a navigation session using\n `GMSNavigationService.createNavigationSession`, which is a state-bearing\n non-UI object that can operate either with a view controller, or without\n one.\n\n \u003cbr /\u003e\n\n For more information, see [Details about the turn-by-turn data\n feed](/maps/documentation/navigation/ios-sdk/nav-only-feed).\n\n **See the demo:** The download of the Navigation SDK contains a demo\n you can run to see an example of a navigation experience that switches\n between turn-by-turn guidance through standard navigation to a navigation\n experience that shows only the device location moving along a road\n polyline.\n2. **Active navigation** . Here is another key difference between a\n Google-provided navigation experience and a custom navigation experience.\n Instead of handing off guidance to the built-in event manager of the\n Navigation SDK, you set up a listener for detailed turn-by-turn guidance by implementing the `GMSNavigatorListener` protocol, and then implement event\n handlers. This allows your experience to respond to the events described in\n [Listen for navigation\n events](/maps/documentation/navigation/ios-sdk/events).\n\n3. **End navigation**. As with the Google navigation experience, custom\n navigation also requires you to terminate navigation in the manner best\n suited for the app's experience.\n\nWhen might you use a custom navigation experience?\n\nThe following table describes some custom navigation scenarios.\n\n| **Example scenario** | **High-level steps** |\n|----------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| You need to provide text-only driver guidance for small devices such as 2-wheeled vehicles. | Create your navigator and set up the turn-by-turn guidance as a data feed to a small screen device while the navigator runs on the driver's mobile phone outside of their immediate view. |\n| You want to make your app available as a car service for drivers who use Apple Carplay. | 1. Set up the car service. 2. Set up your Navigation SDK project. 3. Establish a navigator if you haven't already. 4. Set up a listener for turn-by-turn guidance. 5. Draw the map on the auto app surface and populate the fields from the data feed you configured. For more information, see [Enable Navigation for Carplay](/maps/documentation/navigation/ios-sdk/carplay) |\n| Drivers using your app want an overview map for most of their journey, with only minimal turn-by-turn guidance for city streets. | Your app should allow drivers to enter and exit the Google navigation experience as they need, without alternating the navigator's settings for destination and trip mode. |"]]
