功能和 API

Android 16 面向开发者引入了一些出色的新功能和 API。以下各部分总结了这些功能，可帮助您开始使用相关 API。

有关新增、修改和移除的 API 的详细列表，请参阅 API 差异报告。如需详细了解新的 API，请访问 Android API 参考文档，新 API 会突出显示以方便查看。

您还应查看平台变更可能会在哪些方面影响您的应用。如需了解详情，请参阅以下页面：

核心功能

Android 包含一些新的 API，可扩展 Android 系统的核心功能。

2025 年发布了两个 Android API

  • This preview is for the next major release of Android with a planned launch in Q2 of 2025. This release is similar to all of our API releases in the past, where we can have planned behavior changes that are often tied to a targetSdkVersion.
  • We're planning the major release a quarter earlier (Q2 rather than Q3 in prior years) to better align with the schedule of device launches across our ecosystem, so more devices can get the major release of Android sooner. With the major release coming in Q2, you'll need to do your annual compatibility testing a few months earlier than in previous years to make sure your apps are ready.
  • We plan to have another release in Q4 of 2025 which also will include new developer APIs. The Q2 major release will be the only release in 2025 to include planned behavior changes that could affect apps.

In addition to new developer APIs, the Q4 minor release will pick up feature updates, optimizations, and bug fixes; it will not include any app-impacting behavior changes.

Timeline view of Android releases in 2025, noting that the 25Q2 release is a major release and the 25Q4 release is a minor release.

We'll continue to have quarterly Android releases. The Q1 and Q3 updates in-between the API releases will provide incremental updates to help ensure continuous quality. We're actively working with our device partners to bring the Q2 release to as many devices as possible.

Using new APIs with major and minor releases

Guarding a code block with a check for API level is done today using the SDK_INT constant with VERSION_CODES. This will continue to be supported for major Android releases.

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

The new SDK_INT_FULL constant can be used for API checks against both major and minor versions with the new VERSION_CODES_FULL enumeration.

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

You can also use the Build.getMinorSdkVersion() method to get just the minor SDK version.

val minorSdkVersion = Build.getMinorSdkVersion(VERSION_CODES_FULL.BAKLAVA)

These APIs have not yet been finalized and are subject to change, so please send us feedback if you have any concerns.

用户体验和系统界面

Android 16 为应用开发者和用户提供了更多控制权和灵活性，以便他们根据自己的需求配置设备。

以进度为中心的通知

Android 16 引入了以进度为中心的通知，可帮助用户顺畅地跟踪用户发起的端到端历程。

Notification.ProgressStyle 是一种新的通知样式，可让您创建以进度为中心的通知。主要用例包括共享车辆、送货和导航。在 Notification.ProgressStyle 类中，您可以使用点和细分来表示用户体验历程中的状态和里程碑。

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

A progress-centric notification displayed on the lockscreen.
A progress-centric notification displayed in the notification shade.

预测性返回更新

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.

更丰富的触感反馈

Android has exposed control over the haptic actuator ever since its inception.

Android 11 added support for more complex haptic effects that more advanced actuators could support through VibrationEffect.Compositions of device-defined semantic primitives.

Android 16 adds haptic APIs that let apps define the amplitude and frequency curves of a haptic effect while abstracting away differences between device capabilities.

开发者工作效率和工具

虽然我们的大部分工作都是围绕 Android Studio、Jetpack Compose 和 Android Jetpack 库等工具来提高您的工作效率，但我们始终在寻找平台中的方法来帮助您实现自己的愿景。

动态壁纸的内容处理

在 Android 16 中，动态壁纸框架将获得一个新的 content API，以应对由用户驱动的动态壁纸带来的挑战。目前，包含用户提供的内容的实时壁纸需要复杂的服务专用实现。Android 16 引入了 WallpaperDescription 和 WallpaperInstance。借助 WallpaperDescription，您可以识别同一服务中的动态壁纸的不同实例。例如，如果某张壁纸同时在主屏幕和锁定屏幕上显示，则这两种情况下显示的内容可能各不相同。壁纸选择器和 WallpaperManager 会使用此元数据更好地向用户呈现壁纸，从而简化创建多样化个性化动态壁纸体验的过程。

性能和电池

Android 16 引入了可帮助您收集应用相关数据分析的 API。

系统触发的性能分析

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.

ApplicationStartInfo 中的启动组件

ApplicationStartInfo was added in Android 15, allowing an app to see reasons for process start, start type, start times, throttling, and other useful diagnostic data. Android 16 adds getStartComponent() to distinguish what component type triggered the start, which can be helpful for optimizing the startup flow of your app.

更好的作业内省

The JobScheduler#getPendingJobReason() API returns a reason why a job might be pending. However, a job might be pending for multiple reasons.

In Android 16, we are introducing a new API JobScheduler#getPendingJobReasons(int jobId), which returns multiple reasons why a job is pending, due to both explicit constraints set by the developer and implicit constraints set by the system.

We're also introducing JobScheduler#getPendingJobReasonsHistory(int jobId), which returns a list of the most recent constraint changes.

We recommend using the API to help you debug why your jobs may not be executing, especially if you're seeing reduced success rates of certain tasks or have bugs around latency of certain job completion. For example, updating widgets in the background failed to occur or prefetch job failed to be called prior to app start.

This can also better help you understand if certain jobs are not completing due to system defined constraints versus explicitly set constraints.

自动调节刷新率

Adaptive refresh rate (ARR), introduced in Android 15, enables the display refresh rate on supported hardware to adapt to the content frame rate using discrete VSync steps. This reduces power consumption while eliminating the need for potentially jank-inducing mode-switching.

Android 16 introduces hasArrSupport() and getSuggestedFrameRate(int) while restoring getSupportedRefreshRates() to make it easier for your apps to take advantage of ARR. RecyclerView 1.4 internally supports ARR when it is settling from a fling or smooth scroll, and we're continuing our work to add ARR support into more Jetpack libraries. This frame rate article covers many of the APIs you can use to set the frame rate so that your app can directly use ARR.

ADPF 中的裕度 API

SystemHealthManager 引入了 getCpuHeadroom 和 getGpuHeadroom API，旨在为游戏和资源密集型应用提供可用 CPU 和 GPU 资源的估算值。通过这些方法，您可以评估应用或游戏如何以最佳方式改善系统运行状况，尤其是在与用于检测热节流的其他 Android 动态性能框架 (ADPF) API 搭配使用时。

在受支持的设备上使用 CpuHeadroomParams 和 GpuHeadroomParams，您可以自定义用于计算余量的时间范围，并在平均资源可用性或最低资源可用性之间进行选择。这有助于您相应地减少 CPU 或 GPU 资源用量，从而提升用户体验并延长电池续航时间。

无障碍

Android 16 新增了无障碍功能 API 和功能，可帮助您让所有用户都能使用您的应用。

改进了无障碍功能 API

Android 16 添加了其他 API 来增强界面语义，这有助于为依赖于无障碍服务（例如 TalkBack）的用户提高一致性。

为文字添加轮廓，以最大限度地提高文字对比度

视力较低的用户对对比度的敏感度通常较低，因此很难将对象与背景区分开来。为了帮助这些用户，Android 16 引入了轮廓文本，取代了高对比度文本，后者会在文本周围绘制较大的对比度区域，以大大提高可辨性。

Android 16 包含新的 AccessibilityManager API，可让您的应用检查或注册监听器，以查看此模式是否已启用。这主要适用于 Compose 等界面工具包，以提供类似的视觉体验。如果您维护界面工具包库，或者您的应用执行绕过 android.text.Layout 类的自定义文本渲染，则可以使用此方法来了解何时启用轮廓文本。

Android 16 推出新的轮廓文本无障碍功能前后，对比度更高的文本

向 TtsSpan 添加了时长

Android 16 使用 TYPE_DURATION 扩展了 TtsSpan，其中包含 ARG_HOURS、ARG_MINUTES 和 ARG_SECONDS。这样，您就可以直接为时长添加注释，确保通过 TalkBack 等服务获得准确且一致的文本转语音输出。

支持具有多个标签的元素

Android 目前允许界面元素从其他元素派生其无障碍功能标签，现在还支持关联多个标签，这是 Web 内容中常见的情况。通过在 AccessibilityNodeInfo 中引入基于列表的 API，Android 可以直接支持这些多标签关系。在进行这项更改的过程中，我们已弃用 AccessibilityNodeInfo#setLabeledBy 和 #getLabeledBy，改用 #addLabeledBy、#removeLabeledBy 和 #getLabeledByList。

改进了对可展开元素的支持

Android 16 添加了无障碍功能 API，可让您传达互动元素（例如菜单和展开式列表）的展开或收起状态。通过使用 setExpandedState 设置展开状态，并使用 CONTENT_CHANGE_TYPE_EXPANDED 内容更改类型调度 TYPE_WINDOW_CONTENT_CHANGED AccessibilityEvents，您可以确保 TalkBack 等屏幕阅读器会读出状态更改，从而提供更直观、更包容的用户体验。

不确定进度条

Android 16 添加了 RANGE_TYPE_INDETERMINATE，让您可以为确定性和不确定性 ProgressBar 微件公开 RangeInfo，从而让 TalkBack 等服务能够更一致地为进度指示器提供反馈。

三态复选框

Android 16 中的新 AccessibilityNodeInfo getChecked 和 setChecked(int) 方法现在除了“已选中”和“未选中”之外，还支持“部分选中”状态。此字段取代了已废弃的布尔值 isChecked 和 setChecked(boolean)。

补充说明

如果无障碍服务提供关于 ViewGroup 的说明，则会将来自其子视图的内容标签合并在一起。如果您为 ViewGroup 提供 contentDescription，无障碍服务会假定您还要覆盖不可聚焦的子视图的说明。如果您想为下拉菜单等内容添加标签（例如“字体系列”），同时保留当前的无障碍功能选择（例如“Roboto”），这可能会造成问题。Android 16 添加了 setSupplementalDescription，以便您提供用于提供 ViewGroup 相关信息的文本，而不会覆盖其子项中的信息。

必填表单字段

Android 16 向 AccessibilityNodeInfo 添加了 setFieldRequired，以便应用可以告知无障碍服务需要输入表单字段。对于填写各种类型表单的用户而言，这是一个重要的场景，即使是简单的必填条款及条件复选框，也能帮助用户始终如一地识别必填字段并在必填字段之间快速导航。

将手机作为 LEA 助听器的语音通话麦克风输入

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.

LEA 助听器的环境音量控制

Android 16 新增了一项功能，可让 LE Audio 助听器用户调节助听器麦克风接收的环境声音的音量。在背景噪音过大或过小的情况下，这可能会很有用。

相机

Android 16 增强了对专业相机用户的支持，允许进行混合自动曝光以及精确的色温和色调调整。新的夜间模式指示器可帮助应用了解何时切换到夜间模式相机会议以及何时从夜间模式相机会议切换回来。新的 Intent 操作可让您更轻松地拍摄动态照片，并且我们还在不断改进 UltraHDR 图片，支持 HEIC 编码和 ISO 21496-1 草稿标准中的新参数。

混合自动曝光

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) ...
}

精确的色温和色调调整

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.

相机夜间模式场景检测

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.

动态照片拍摄 intent 操作

Android 16 添加了标准 intent 操作 ACTION_MOTION_PHOTO_CAPTURE 和 ACTION_MOTION_PHOTO_CAPTURE_SECURE，用于请求相机应用拍摄动态照片并将其返回。

您必须传递额外的 EXTRA_OUTPUT 来控制将图片写入的位置，或者通过 Intent.setClipData(ClipData) 传递 Uri。如果您未设置 ClipData，系统会在调用 Context.startActivity(Intent) 时将其复制到该位置。

动态照片示例，显示静态图片和动态播放画面。

UltraHDR 图片增强功能

An illustration of Standard Dynamic Range (SDR) versus High Dynamic Range (HDR) image quality.

Android 16 continues our work to deliver dazzling image quality with UltraHDR images. It adds support for UltraHDR images in the HEIC file format. These images will get ImageFormat type HEIC_ULTRAHDR and will contain an embedded gainmap similar to the existing UltraHDR JPEG format. We're working on AVIF support for UltraHDR as well, so stay tuned.

In addition, Android 16 implements additional parameters in UltraHDR from the ISO 21496-1 draft standard, including the ability to get and set the colorspace that gainmap math should be applied in, as well as support for HDR encoded base images with SDR gainmaps.

图形

Android 16 包含最新的图形改进，例如使用 AGSL 实现自定义图形效果。

使用 AGSL 实现自定义图形效果

Android 16 adds RuntimeColorFilter and RuntimeXfermode, allowing you to author complex effects like Threshold, Sepia, and Hue Saturation and apply them to draw calls. Since Android 13, you've been able to use AGSL to create custom RuntimeShaders that extend Shader. The new API mirrors this, adding an AGSL-powered RuntimeColorFilter that extends ColorFilter, and a Xfermode effect that lets you implement AGSL-based custom compositing and blending between source and destination pixels.

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
}

连接

Android 16 更新了平台，让您的应用能够使用通信和无线技术方面的最新进展。

测距功能（增强型安全）

Android 16 adds support for robust security features in Wi-Fi location on supported devices with Wi-Fi 6's 802.11az, allowing apps to combine the higher accuracy, greater scalability, and dynamic scheduling of the protocol with security enhancements including AES-256-based encryption and protection against MITM attacks. This allows it to be used more safely in proximity use cases, such as unlocking a laptop or a vehicle door. 802.11az is integrated with the Wi-Fi 6 standard, leveraging its infrastructure and capabilities for wider adoption and easier deployment.

通用测距 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.

配套设备管理器设备存在情况

In Android 16, new APIs are being introduced for binding your companion app service. Service will be bound when BLE is in range and Bluetooth is connected and service will be unbound when BLE is out of range or Bluetooth is disconnected. App will receives a new 'onDevicePresenceEvent()' callback based on various of DevicePresenceEvent. More details can be found in 'startObservingDevicePresence(ObservingDevicePresenceRequest)'.

媒体

Android 16 包含多种可提升媒体体验的功能。

改进了照片选择器

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.

高级专业视频

Android 16 introduces support for the Advanced Professional Video (APV) codec which is designed to be used for professional level high quality video recording and post production.

The APV codec standard has the following features:

  • Perceptually lossless video quality (close to raw video quality)
  • Low complexity and high throughput intra-frame-only coding (without pixel domain prediction) to better support editing workflows
  • Support for high bit-rate range up to a few Gbps for 2K, 4K and 8K resolution content, enabled by a lightweight entropy coding scheme
  • Frame tiling for immersive content and for enabling parallel encoding and decoding
  • Support for various chroma sampling formats and bit-depths
  • Support for multiple decoding and re-encoding without severe visual quality degradation
  • Support multi-view video and auxiliary video like depth, alpha, and preview
  • Support for HDR10/10+ and user-defined metadata

A reference implementation of APV is provided through the OpenAPV project. Android 16 will implement support for the APV 422-10 Profile that provides YUV 422 color sampling along with 10-bit encoding and for target bitrates of up to 2Gbps.

隐私设置

Android 16 包含多种有助于应用开发者保护用户隐私的功能。

健康数据共享更新

Health Connect 添加了 ACTIVITY_INTENSITY，这是一种根据世界卫生组织关于中等强度和剧烈强度活动的指南定义的数据类型。每个记录都需要提供开始时间、结束时间以及活动强度（中等或剧烈）。

Health Connect 还包含支持医疗记录的更新版 API。这样一来，应用便可在征得用户明确同意的情况下，读取和写入 FHIR 格式的医疗记录。

Privacy Sandbox on Android

Android 16 中集成了最新版本的 Privacy Sandbox on Android，这是我们持续致力于开发可让用户放心地知道其隐私受到保护的技术的一部分。您可以访问我们的网站，详细了解 Privacy Sandbox on Android 开发者 Beta 版计划，以便顺利上手。不妨了解 SDK 运行时，它可让 SDK 在与其所服务的应用分离的专用运行时环境中运行，从而为用户数据收集和共享提供更强的保护措施。

安全

Android 16 包含有助于增强应用安全性并保护应用数据的功能。

密钥共享 API

Android 16 adds APIs that support sharing access to Android Keystore keys with other apps. The new KeyStoreManager class supports granting and revoking access to keys by app uid, and includes an API for apps to access shared keys.

设备规格

Android 16 为您的应用提供支持，让您充分利用 Android 的设备类型。

电视的标准化画质和音质框架

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.

国际化

Android 16 新增了多项功能，可在设备以不同语言运行时提升用户体验。

竖排文字

Android 16 adds low-level support for rendering and measuring text vertically to provide foundational vertical writing support for library developers. This is particularly useful for languages like Japanese that commonly use vertical writing systems. A new flag, VERTICAL_TEXT_FLAG, has been added to the Paint class. When this flag is set using Paint.setFlags, Paint's text measurement APIs will report vertical advances instead of horizontal advances, and Canvas will draw text vertically.

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
            )
        }
    }
) {}

自定义度量衡制

用户现在可以在“设置”中的地区偏好设置中自定义测量系统。用户偏好设置包含在语言区域代码中，因此您可以在 ACTION_LOCALE_CHANGED 上注册 BroadcastReceiver，以便在地区偏好设置发生更改时处理语言区域配置更改。

使用格式设置程序有助于提供符合当地体验的服务。例如，对于将手机设置为英语（丹麦）或将手机设置为英语（美国）并将公制作为首选测量系统的用户，“0.5 in”的英语（美国）对应于“12,7 mm”。

如需找到这些设置，请打开“设置”应用，然后依次前往系统 > 语言和地区。