功能與 API

Android 16 為開發人員推出了強大的新功能和 API。下列各節會概述這些功能,協助您開始使用相關 API。

如需新增、修改及移除 API 的詳細清單,請參閱 API 差異比較表。如要進一步瞭解新的 API,請參閱 Android API 參考資料 - 新的 API 會醒目顯示,以利於查看。

您也應檢查平台變更可能對應用程式造成影響的層面。如需詳細資訊,請參閱以下頁面:

核心功能

Android 包含可擴充 Android 系統核心功能的新 API。

2025 年推出兩個 Android API

  • 這個預覽版適用於下一個 Android 主要版本,預計於 2025 年第 2 季推出。這個版本與我們過去的所有 API 版本類似,我們可以進行預定的行為變更,這些變更通常與 targetSdkVersion 相關。
  • 我們預計將主要版本提前一個季發布 (第 2 季,而非以往的第 3 季),以便與生態系統中的裝置推出時程保持一致,讓更多裝置能盡早取得主要的 Android 版本。由於主要版本將於第 2 季推出,您需要比往年提早幾個月進行年度相容性測試,確保應用程式已準備就緒。
  • 我們預計在 2025 年第 4 季推出另一個版本,其中也會納入新的開發人員 API。2025 年唯一會納入可能影響應用程式的行為變更計畫的版本,就是第 2 季主要版本。

除了新的開發人員 API,第 4 季次要版本還會推出功能更新、最佳化和錯誤修正,但不會包含任何會影響應用程式的行為變更。

2025 年 Android 版本的時間軸檢視畫面,請注意,25Q2 版本是主要版本,25Q4 版本是次要版本。

我們會持續每季發布 Android 版本。在 API 版本之間,第 1 季和第 3 季的更新會提供漸進式更新,有助確保持續提供高品質服務。我們正積極與裝置合作夥伴合作,盡可能讓 Q2 版本適用於更多裝置。

使用主要和次要版本的新 API

今天,您可以使用 SDK_INT 常數搭配 VERSION_CODES,保護含有 API 級別檢查的程式碼區塊。我們會持續為主要的 Android 版本提供支援。

if (SDK_INT >= VERSION_CODES.BAKLAVA) {
  // Use APIs introduced in Android 16
}

新的 SDK_INT_FULL 常數可用於針對主要和次要版本進行 API 檢查,並搭配新的 VERSION_CODES_FULL 列舉。

if (SDK_INT_FULL >= VERSION_CODES_FULL.[MAJOR or MINOR RELEASE]) {
  // Use APIs introduced in a major or minor release
}

您也可以使用 Build.getMinorSdkVersion() 方法,只取得 SDK 子版本。

val minorSdkVersion = Build.getMinorSdkVersion(VERSION_CODES_FULL.BAKLAVA)

這些 API 尚未定案,且可能有所變動,因此如果您有任何疑慮,請提供意見回饋

使用者體驗和系統使用者介面

Android 16 可讓應用程式開發人員和使用者更靈活地控管裝置,以符合自身需求。

以進度為主軸的通知

Android 16 推出以進度為主的通知,協助使用者順暢追蹤使用者啟動的端對端歷程。

Notification.ProgressStyle 是一種新的通知樣式,可讓您建立以進度為主的通知。主要用途包括共乘、外送和導航。在 Notification.ProgressStyle 類別中,您可以使用區隔,表示使用者歷程中的狀態和里程碑。

To learn more, see the Progress-centric notifications documentation page.

在螢幕鎖定畫面上顯示以進度為主的通知。
通知欄中顯示以進度為主的通知。

預測返回更新

Android 16 adds new APIs to help you enable predictive back system animations in gesture navigation such as the back-to-home animation. Registering the onBackInvokedCallback with the new PRIORITY_SYSTEM_NAVIGATION_OBSERVER allows your app to receive the regular onBackInvoked call whenever the system handles a back navigation without impacting the normal back navigation flow.

Android 16 additionally adds the finishAndRemoveTaskCallback() and moveTaskToBackCallback. By registering these callbacks with the OnBackInvokedDispatcher, the system can trigger specific behaviors and play corresponding ahead-of-time animations when the back gesture is invoked.

更豐富的觸覺回饋

自推出以來,Android 就提供觸覺感應致動器控制項。

Android 11 新增了對更複雜的觸覺效果支援,進階的致動器可透過裝置定義語義原始類型的 VibrationEffect.Compositions 支援此類效果。

Android 16 新增觸覺 API,讓應用程式定義觸覺效果的振幅和頻率曲線,同時抽象化裝置功能之間的差異。

開發人員工作效率和工具

雖然我們大部分的工作都是圍繞著 Android StudioJetpack ComposeAndroid Jetpack 程式庫等工具,來改善您的工作效率,但我們也一直在尋找各種方法,透過平台協助您實現願景。

動態桌布的內容處理

In Android 16, the live wallpaper framework is gaining a new content API to address the challenges of dynamic, user-driven wallpapers. Currently, live wallpapers incorporating user-provided content require complex, service-specific implementations. Android 16 introduces WallpaperDescription and WallpaperInstance. WallpaperDescription lets you identify distinct instances of a live wallpaper from the same service. For example, a wallpaper that has instances on both the home screen and on the lock screen may have unique content in both places. The wallpaper picker and WallpaperManager use this metadata to better present wallpapers to users, streamlining the process for you to create diverse and personalized live wallpaper experiences.

效能和電池

Android 16 推出了可協助收集應用程式深入分析資訊的 API。

系統觸發的剖析

ProfilingManager was added in Android 15, giving apps the ability to request profiling data collection using Perfetto on public devices in the field. However, since this profiling must be started from the app, critical flows such as startups or ANRs would be difficult or impossible for apps to capture.

To help with this, Android 16 introduces system-triggered profiling to ProfilingManager. Apps can register interest in receiving traces for certain triggers such as cold start reportFullyDrawn or ANRs, and then the system starts and stops a trace on the app's behalf. After the trace completes, the results are delivered to the app's data directory.

在 ApplicationStartInfo 中啟動元件

ApplicationStartInfo 已在 Android 15 中新增,可讓應用程式查看程序啟動原因、啟動類型、啟動時間、節流和其他實用的診斷資料。Android 16 新增了 getStartComponent(),用於區分觸發啟動的元件類型,這有助於最佳化應用程式的啟動流程。

更完善的工作內省功能

JobScheduler#getPendingJobReason() API 會傳回工作可能處於待處理狀態的原因。不過,工作可能會因多種原因而處於待處理狀態。

在 Android 16 中,我們推出了全新的 API JobScheduler#getPendingJobReasons(int jobId),可傳回工作處於待處理狀態的多種原因,包括開發人員設定的明確限制,以及系統設定的隱含限制。

我們也推出 JobScheduler#getPendingJobReasonsHistory(int jobId),可傳回最新約束條件變更的清單。

建議您使用 API 來偵測工作未執行的原因,特別是當您發現特定工作成功率降低,或特定工作完成時間延遲時,就需要進行偵錯。例如,在背景更新小工具時發生錯誤,或是在應用程式啟動前無法呼叫預先擷取工作。

這也能協助您進一步瞭解,某些工作是否因系統定義的限制而無法完成,而非明確設定的限制。

自動調整刷新率

在 Android 15 中推出的適應性重新整理率 (ARR) 可讓支援硬體的螢幕重新整理率,透過獨立的 VSync 步驟調整至內容影格速率。這麼做可降低耗電量,同時避免需要切換模式,進而導致卡頓現象。

Android 16 在還原 getSupportedRefreshRates() 時,會引入 hasArrSupport()getSuggestedFrameRate(int),讓應用程式更容易利用 ARR。RecyclerView 1.4從彈跳或平滑捲動中進行調整時,會在內部支援 ARR,我們也持續致力於將 ARR 支援功能加入更多 Jetpack 程式庫。這篇關於影格速率的文章介紹許多可用來設定影格速率的 API,讓應用程式能直接使用 ARR。

ADPF 中的 Headroom API

SystemHealthManager 引進 getCpuHeadroomgetGpuHeadroom API,旨在為遊戲和資源密集型應用程式提供可用 CPU 和 GPU 資源的預估值。這些方法可讓您評估應用程式或遊戲如何最佳化系統健康狀況,尤其是與其他Android 動態效能架構 (ADPF) API 搭配使用時,這些 API 可偵測熱控調節

在支援的裝置上使用 CpuHeadroomParamsGpuHeadroomParams,您可以自訂用於計算預留空間的時間視窗,並選擇平均或最低資源可用性。這麼做可以協助您相應減少 CPU 或 GPU 資源使用量,進而提供更優質的使用者體驗和更長的電池續航力。

無障礙設定

Android 16 新增了無障礙 API 和功能,可協助您將應用程式推廣給所有使用者。

改善無障礙 API

Android 16 adds additional APIs to enhance UI semantics that help improve consistency for users that rely on accessibility services, such as TalkBack.

Outline text for maximum text contrast

Users with low vision often have reduced contrast sensitivity, making it challenging to distinguish objects from their backgrounds. To help these users, Android 16 introduces outline text, replacing high contrast text, which draws a larger contrasting area around text to greatly improve legibility.

Android 16 contains new AccessibilityManager APIs to let your apps check or register a listener to see if this mode is enabled. This is primarily for UI Toolkits like Compose to offer a similar visual experience. If you maintain a UI Toolkit library or your app performs custom text rendering that bypasses the android.text.Layout class then you can use this to know when outline text is enabled.

Text with enhanced contrast before and after Android 16's new outline text accessibility feature

Duration added to TtsSpan

Android 16 extends TtsSpan with a TYPE_DURATION, consisting of ARG_HOURS, ARG_MINUTES, and ARG_SECONDS. This lets you directly annotate time duration, ensuring accurate and consistent text-to-speech output with services like TalkBack.

Support elements with multiple labels

Android currently allows UI elements to derive their accessibility label from another, and now offers the ability for multiple labels to be associated, a common scenario in web content. By introducing a list-based API within AccessibilityNodeInfo, Android can directly support these multi-label relationships. As part of this change, we've deprecated AccessibilityNodeInfo#setLabeledBy and #getLabeledBy in favor of #addLabeledBy, #removeLabeledBy, and #getLabeledByList.

Improved support for expandable elements

Android 16 adds accessibility APIs that allow you to convey the expanded or collapsed state of interactive elements, such as menus and expandable lists. By setting the expanded state using setExpandedState and dispatching TYPE_WINDOW_CONTENT_CHANGED AccessibilityEvents with a CONTENT_CHANGE_TYPE_EXPANDED content change type, you can ensure that screen readers like TalkBack announce state changes, providing a more intuitive and inclusive user experience.

Indeterminate ProgressBars

Android 16 adds RANGE_TYPE_INDETERMINATE, giving a way for you to expose RangeInfo for both determinate and indeterminate ProgressBar widgets, allowing services like TalkBack to more consistently provide feedback for progress indicators.

Tri-state CheckBox

The new AccessibilityNodeInfo getChecked and setChecked(int) methods in Android 16 now support a "partially checked" state in addition to "checked" and "unchecked." This replaces the deprecated boolean isChecked and setChecked(boolean).

Supplemental descriptions

When an accessibility service describes a ViewGroup, it combines content labels from its child views. If you provide a contentDescription for the ViewGroup, accessibility services assume you are also overriding the description of non-focusable child views. This can be problematic if you want to label things like a drop-down (for example, "Font Family") while preserving the current selection for accessibility (for example, "Roboto"). Android 16 adds setSupplementalDescription so you can provide text that provides information about a ViewGroup without overriding information from its children.

Required form fields

Android 16 adds setFieldRequired to AccessibilityNodeInfo so apps can tell an accessibility service that input to a form field is required. This is an important scenario for users filling out many types of forms, even things as simple as a required terms and conditions checkbox, helping users to consistently identify and quickly navigate between required fields.

使用手機麥克風輸入聲音,以便透過 LEA 助聽器進行語音通話

Android 16 adds the capability for users of LE Audio hearing aids to switch between the built-in microphones on the hearing aids and the microphone on their phone for voice calls. This can be helpful in noisy environments or other situations where the hearing aid's microphones might not perform well.

為 LEA 助聽器提供環境音量控制

Android 16 adds the capability for users of LE Audio hearing aids to adjust the volume of ambient sound that is picked up by the hearing aid's microphones. This can be helpful in situations where background noise is too loud or too quiet.

相機

Android 16 強化了對專業相機使用者的支援,可搭配混合式自動曝光功能,精準調整色溫和色調。新的夜間模式指標可協助應用程式瞭解何時切換至夜間模式相機工作階段,以及何時切換出去。新的 Intent 動作可讓你更輕鬆地拍攝動態相片,我們也持續改善 UltraHDR 圖片,支援 HEIC 編碼和 ISO 21496-1 草稿標準的新參數。

混合式自動曝光

Android 16 adds new hybrid auto-exposure modes to Camera2, allowing you to manually control specific aspects of exposure while letting the auto-exposure (AE) algorithm handle the rest. You can control ISO + AE, and exposure time + AE, providing greater flexibility compared to the current approach where you either have full manual control or rely entirely on auto-exposure.

fun setISOPriority() {
    // ... (Your existing code before the snippet) ...

    val availablePriorityModes = mStaticInfo.characteristics.get(
        CameraCharacteristics.CONTROL_AE_AVAILABLE_PRIORITY_MODES
    )

    // ... (Your existing code between the snippets) ...

    // Turn on AE mode to set priority mode
    reqBuilder.set(
        CaptureRequest.CONTROL_AE_MODE,
        CameraMetadata.CONTROL_AE_MODE_ON
    )
    reqBuilder.set(
        CaptureRequest.CONTROL_AE_PRIORITY_MODE,
        CameraMetadata.CONTROL_AE_PRIORITY_MODE_SENSOR_SENSITIVITY_PRIORITY
    )
    reqBuilder.set(
        CaptureRequest.SENSOR_SENSITIVITY,
        TEST_SENSITIVITY_VALUE
    )
    val request: CaptureRequest = reqBuilder.build()

    // ... (Your existing code after the snippet) ...
}

精確調整色溫和色調

Android 16 adds camera support for fine color temperature and tint adjustments to better support professional video recording applications. In previous Android versions, you could control white balance settings through CONTROL_AWB_MODE, which contains options limited to a preset list, such as Incandescent, Cloudy, and Twilight. The COLOR_CORRECTION_MODE_CCT enables the use of COLOR_CORRECTION_COLOR_TEMPERATURE and COLOR_CORRECTION_COLOR_TINT for precise adjustments of white balance based on the correlated color temperature.

fun setCCT() {
    // ... (Your existing code before this point) ...

    val colorTemperatureRange: Range<Int> =
        mStaticInfo.characteristics[CameraCharacteristics.COLOR_CORRECTION_COLOR_TEMPERATURE_RANGE]

    // Set to manual mode to enable CCT mode
    reqBuilder[CaptureRequest.CONTROL_AWB_MODE] = CameraMetadata.CONTROL_AWB_MODE_OFF
    reqBuilder[CaptureRequest.COLOR_CORRECTION_MODE] = CameraMetadata.COLOR_CORRECTION_MODE_CCT
    reqBuilder[CaptureRequest.COLOR_CORRECTION_COLOR_TEMPERATURE] = 5000
    reqBuilder[CaptureRequest.COLOR_CORRECTION_COLOR_TINT] = 30

    val request: CaptureRequest = reqBuilder.build()

    // ... (Your existing code after this point) ...
}

The following examples show how a photo would look after applying different color temperature and tint adjustments:

The original image with no color temperature or tint adjustments applied.
The image with color temperature adjusted to 3000.
The image with color temperature adjusted to 7000.


The image with tint levels lowered by 50.
The image with tint levels raised by 50.

相機夜間模式場景偵測

To help your app know when to switch to and from a night mode camera session, Android 16 adds EXTENSION_NIGHT_MODE_INDICATOR. If supported, it's available in the CaptureResult within Camera2.

This is the API we briefly mentioned as coming soon in the How Instagram enabled users to take stunning low light photos blog post. That post is a practical guide on how to implement night mode together with a case study that links higher-quality in-app night mode photos with an increase in the number of photos shared from the in-app camera.

動態相片拍攝意圖動作

Android 16 adds standard Intent actions — ACTION_MOTION_PHOTO_CAPTURE, and ACTION_MOTION_PHOTO_CAPTURE_SECURE — which request that the camera application capture a motion photo and return it.

You must either pass an extra EXTRA_OUTPUT to control where the image will be written, or a Uri through Intent.setClipData(ClipData). If you don't set a ClipData, it will be copied there for you when calling Context.startActivity(Intent).

An example of a motion photo, showing the still image followed by the motion playback.

UltraHDR 圖片強化功能

標準動態範圍 (SDR) 與高動態範圍 (HDR) 圖片品質的比較圖。

Android 16 持續致力於透過 UltraHDR 圖片提供令人驚豔的圖像品質。新增對 HEIC 檔案格式中的 UltraHDR 圖片支援。這些圖片會取得 ImageFormat 類型的 HEIC_ULTRAHDR,並包含類似現有 UltraHDR JPEG 格式的內嵌增益圖。我們也正在努力讓 AVIF 支援 UltraHDR,敬請期待。

此外,Android 16 會根據 ISO 21496-1 草稿標準,在 UltraHDR 中實作其他參數,包括取得及設定應套用的增益圖數值空間,以及支援 HDR 編碼的基礎圖片,並使用 SDR 增益圖。

圖形

Android 16 包含最新的圖形改善功能,例如使用 AGSL 的自訂圖形效果。

使用 AGSL 製作自訂圖形效果

Android 16 新增了 RuntimeColorFilterRuntimeXfermode,讓您可以製作複雜的效果 (例如閾值、棕褐色和色調飽和度),並套用至繪圖呼叫。自 Android 13 起,您可以使用 AGSL 建立可擴充 Shader 的自訂 RuntimeShaders。新的 API 會反映這項情況,新增由 AGSL 提供動力的 RuntimeColorFilter,可擴充 ColorFilter,以及 Xfermode 效果,讓您在來源和目的地像素之間實作以 AGSL 為基礎的自訂合成和混合效果。

private val thresholdEffectString = """
    uniform half threshold;

    half4 main(half4 c) {
        half luminosity = dot(c.rgb, half3(0.2126, 0.7152, 0.0722));
        half bw = step(threshold, luminosity);
        return bw.xxx1 * c.a;
    }"""

fun setCustomColorFilter(paint: Paint) {
   val filter = RuntimeColorFilter(thresholdEffectString)
   filter.setFloatUniform(0.5);
   paint.colorFilter = filter
}

連線能力

Android 16 會更新平台,讓應用程式能夠使用最新的通訊和無線技術。

使用強化安全性的測距功能

Android 16 新增了對 Wi-Fi 6 的 802.11az 支援裝置 Wi-Fi 位置資訊的強大安全性功能支援,讓應用程式可結合更高的精確度、更大的可擴充性和動態排程的通訊協定,以及 AES-256 加密和防範中間人攻擊的安全性強化功能。這可讓使用者在近距離用途 (例如解鎖筆電或車門) 時,更安全地使用這項功能。802.11az 已整合 Wi-Fi 6 標準,可利用其基礎架構和功能,讓採用率更廣泛,部署作業也更輕鬆。

泛用範圍 API

Android 16 includes the new RangingManager, which provides ways to determine the distance and angle on supported hardware between the local device and a remote device. RangingManager supports the usage of a variety of ranging technologies such as BLE channel sounding, BLE RSSI-based ranging, Ultra Wideband, and Wi-Fi round trip time.

媒體

Android 16 包含多種可改善媒體體驗的功能。

相片挑選工具改善

The photo picker provides a safe, built-in way for users to grant your app access to selected images and videos from both local and cloud storage, instead of their entire media library. Using a combination of Modular System Components through Google System Updates and Google Play services, it's supported back to Android 4.4 (API level 19). Integration requires just a few lines of code with the associated Android Jetpack library.

Android 16 includes the following improvements to the photo picker:

  • Embedded photo picker: New APIs that enable apps to embed the photo picker into their view hierarchy. This allows it to feel like a more integrated part of the app while still leveraging the process isolation that allows users to select media without the app needing overly broad permissions. To maximize compatibility across platform versions and simplify your integration, you'll want to use the forthcoming Android Jetpack library if you want to integrate the embedded photo picker.
  • Cloud search in photo picker: New APIs that enable searching from the cloud media provider for the Android photo picker. Search functionality in the photo picker is coming soon.

進階專業影片

Android 16 推出了對進階專業影片 (APV) 轉碼器的支援,該轉碼器專為專業級高品質影片錄製和後製作業而設計。

APV 編碼器標準具有下列功能:

  • 感知上無損的影片品質 (接近原始影片品質)
  • 低複雜度和高吞吐量的單一影格編碼 (不含像素網域預測),以便更妥善支援編輯工作流程
  • 支援高位元速率範圍 (最高可達數 Gbps),適用於 2K、4K 和 8K 解析度的內容,可透過輕量化熵值編碼方案啟用
  • 為沉浸式內容和啟用平行編碼/解碼作業的框架平鋪作業
  • 支援各種色度取樣格式和位元深度
  • 支援多重解碼和重新編碼,且不會嚴重降低視覺品質
  • 支援多視角影片和輔助影片,例如深度、alpha 和預覽
  • 支援 HDR10/10+ 和使用者定義的中繼資料

OpenAPV 專案提供 APV 的參考實作項目。Android 16 將實作支援 APV 422-10 設定檔,提供 YUV 422 色彩取樣功能,以及 10 位元編碼和最高 2 Gbps 的目標位元率。

隱私權

Android 16 包含多種功能,可協助應用程式開發人員保護使用者隱私。

Health Connect 更新

開發人員預覽版的 Health Connect 新增了 ACTIVITY_INTENSITY,這是根據世界衛生組織針對中度和劇烈活動定義的新資料類型。每個記錄都需要提供開始時間、結束時間,以及活動強度是屬於中等或高強度。

Health Connect 也包含支援健康記錄的更新版 API。這樣一來,應用程式就能在取得使用者明確同意的情況下,以 FHIR 格式讀取及寫入醫療記錄。這個 API 目前處於搶先體驗計畫階段。如要參與,請註冊搶先體驗計畫

Android 版 Privacy Sandbox

Android 16 整合了最新版本的 Android 版 Privacy Sandbox,這是我們持續開發技術的一部分,讓使用者知道自己的隱私權受到保護。網站提供更多 Android 版 Privacy Sandbox 開發人員 Beta 版計畫的相關資訊,協助您開始使用。請查看 SDK 執行階段,讓 SDK 在專屬的執行階段環境中執行,而非在服務的應用程式中執行,以便在收集和分享使用者資料時提供更完善的防護。

安全性

Android 16 提供多項功能,可協助您強化應用程式的安全性,並保護應用程式的資料。

金鑰共用 API

Android 16 新增了 API,可支援與其他應用程式共用 Android KeyStore 金鑰的存取權。新的 KeyStoreManager 類別支援應用程式 uid 授予撤銷金鑰存取權,並包含可讓應用程式存取共用金鑰的 API。

裝置板型規格

Android 16 可讓應用程式充分發揮 Android 板型規格的效益。

電視的標準影像和音訊品質架構

The new MediaQuality package in Android 16 exposes a set of standardized APIs for access to audio and picture profiles and hardware-related settings. This allows streaming apps to query profiles and apply them to media dynamically:

  • Movies mastered with a wider dynamic range require greater color accuracy to see subtle details in shadows and adjust to ambient light, so a profile that prefers color accuracy over brightness may be appropriate.
  • Live sporting events are often mastered with a narrow dynamic range, but are often watched in daylight, so a profile that preferences brightness over color accuracy can give better results.
  • Fully interactive content wants minimal processing to reduce latency, and wants higher frame rates, which is why many TV's ship with a game profile.

The API allows apps to switch between profiles and users to enjoy tuning supported TVs to best suit their content.

國際化

Android 16 新增了功能和能力,可在使用不同語言的裝置上提供更完善的使用者體驗。

直書文字

Android 16 新增了對垂直顯示和測量文字的低階支援功能,為程式庫開發人員提供基本的垂直書寫支援。這項功能特別適合日文等常使用直式書寫系統的語言。Paint 類別已新增旗標 VERTICAL_TEXT_FLAG。使用 Paint.setFlags 設定這個標記時,Paint 的文字測量 API 會回報垂直進度,而非水平進度,而 Canvas 會垂直繪製文字。

val text = "「春は、曙。」"
Box(
    Modifier.padding(innerPadding).background(Color.White).fillMaxSize().drawWithContent {
        drawIntoCanvas { canvas ->
            val paint = Paint().apply { textSize = 64.sp.toPx() }
            // Draw text vertically
            paint.flags = paint.flags or VERTICAL_TEXT_FLAG
            val height = paint.measureText(text)
            canvas.nativeCanvas.drawText(
                text,
                0,
                text.length,
                size.width / 2,
                (size.height - height) / 2,
                paint
            )
        }
    }
) {}

自訂測量系統

Users can now customize their measurement system in regional preferences within Settings. The user preference is included as part of the locale code, so you can register a BroadcastReceiver on ACTION_LOCALE_CHANGED to handle locale configuration changes when regional preferences change.

Using formatters can help match the local experience. For example, "0.5 in" in English (United States), is "12,7 mm" for a user who has set their phone to English (Denmark) or who uses their phone in English (United States) with the metric system as the measurement system preference.

To find these settings, open the Settings app and navigate to System > Languages & region.