Android 15 為開發人員推出了強大的功能和 API。以下各節會簡要說明這些功能,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。如要進一步瞭解新增的 API,請參閱 Android API 參考資料 - 針對 Android 15,請尋找 API 級別 35 中新增的 API。如要瞭解平台變更可能對應用程式造成的影響,請務必查看指定 Android 15 的應用程式和所有應用程式的 Android 15 行為變更。
相機和媒體
Android 15 包含多種功能,可提升相機和媒體體驗,並提供工具和硬體,協助創作者在 Android 上實現創意。
如要進一步瞭解 Android 媒體和相機的最新功能和開發人員解決方案,請觀看 Google I/O 的「打造現代 Android 媒體和相機體驗」演講。
低光源增強
Android 15 推出了 低光源增強功能,這是可用於 Camera 2 和 夜間模式相機擴充功能的自動曝光模式。低光源增強功能會在低光源環境中調整預覽串流的曝光量。這與夜間模式相機擴充功能建立靜態圖片的方式不同,因為夜間模式會結合一系列相片,建立單一經過強化的圖片。夜間模式雖然非常適合用於拍攝靜態相片,但無法建立連續的畫面串流,而低光增強功能則可以。因此,低光增強功能可啟用相機功能,例如:
- 提供強化圖片預覽功能,方便使用者在低光源環境下拍攝相片
- 在光線不足的環境下掃描 QR code
啟用低光源增強功能後,系統會在光線較暗時自動開啟,並在光線較強時關閉。
應用程式可以在低光源環境下錄製預覽串流,以便儲存經過調亮的影片。
詳情請參閱「低光增強」。
應用程式內攝影機控制選項
Android 15 添加了一个扩展程序,可让您更好地控制支持的设备上的相机硬件及其算法:
HDR 動態範圍控制
Android 15 会选择适合底层设备功能和面板位深的 HDR 余量。对于包含大量 SDR 内容的网页(例如显示单个 HDR 缩略图的消息应用),此行为最终可能会对 SDR 内容的感知亮度产生不利影响。在 Android 15 中,您可以使用 setDesiredHdrHeadroom
控制 HDR 余量,以便在 SDR 内容和 HDR 内容之间取得平衡。

音量控制
Android 15 introduces support for the CTA-2075 loudness standard to help you avoid audio loudness inconsistencies and ensure users don't have to constantly adjust volume when switching between content. The system leverages known characteristics of the output devices (headphones and speaker) along with loudness metadata available in AAC audio content to intelligently adjust the audio loudness and dynamic range compression levels.
To enable this feature, you need to ensure loudness metadata is available in
your AAC content and enable the platform feature in your app. For this, you
instantiate a LoudnessCodecController
object by
calling its create factory method with the audio
session ID from the associated AudioTrack
; this
automatically starts applying audio updates. You can pass an
OnLoudnessCodecUpdateListener
to modify or filter
loudness parameters before they are applied on the
MediaCodec
.
// Media contains metadata of type MPEG_4 OR MPEG_D
val mediaCodec = …
val audioTrack = AudioTrack.Builder()
.setSessionId(sessionId)
.build()
...
// Create new loudness controller that applies the parameters to the MediaCodec
try {
val lcController = LoudnessCodecController.create(mSessionId)
// Starts applying audio updates for each added MediaCodec
}
AndroidX media3 ExoPlayer will also be updated to use the
LoudnessCodecController
APIs for a seamless app integration.
虛擬 MIDI 2.0 裝置
Android 13 添加了对使用 USB 连接 MIDI 2.0 设备的支持,这些设备使用通用 MIDI 数据包 (UMP) 进行通信。Android 15 将 UMP 支持扩展到了虚拟 MIDI 应用,使作曲应用能够像使用 USB MIDI 2.0 设备一样,将虚拟 MIDI 2.0 设备用作控制合成器应用的设备。
更有效率的 AV1 軟體解碼
dav1d, the popular AV1 software decoder from VideoLAN is available for Android devices that don't support AV1 decode in hardware. dav1d is up to 3x more performant than the legacy AV1 software decoder, enabling HD AV1 playback for more users, including some low and mid tier devices.
Your app needs to opt-in to using dav1d by invoking it by name
"c2.android.av1-dav1d.decoder"
. dav1d will be made the default AV1 software
decoder in a subsequent update. This support is standardized and backported to
Android 11 devices that receive Google Play system updates.
開發人員工作效率和工具
我們致力於提升開發人員的工作效率,因此大部分工作都圍繞著 Android Studio、Jetpack Compose 和 Android Jetpack 程式庫等工具進行,但我們也不斷尋找平台上的各種方法,協助您更輕鬆地實現願景。
OpenJDK 17 更新
Android 15 持續更新 Android 核心程式庫,以便與最新版 OpenJDK LTS 中的功能保持一致。
這次更新包含以下重點功能和改善項目:
- 改善 NIO 緩衝區的使用體驗
- 串流
- 其他
math
和strictmath
方法 util
套件更新,包括依序的collection
、map
和set
ByteBuffer
在Deflater
中的支援- 安全性更新,例如
X500PrivateCredential
和安全性金鑰更新
這些 API 會透過 Google Play 系統更新,在搭載 Android 12 (API 級別 31) 以上版本的 10 億部裝置上進行更新,因此您可以指定最新的程式設計功能。
PDF 改善項目
Android 15 对 PdfRenderer
API 进行了重大改进。应用可以整合呈现等高级功能
受密码保护的文件、注释、表单编辑、
searching,而 selection 则包含副本。支持线性化 PDF 优化,此功能可加快本地 PDF 查看速度并减少资源使用量。Jetpack PDF 库使用这些 API 来简化 PDF 的添加
查看功能。

PdfRenderer
已移至一个可使用 Google
Play 系统更新独立于平台版本,并且我们支持
将这些变更还原到 Android 11(API 级别 30),方法是创建兼容的
Android 15 之前版本的 API Surface,称为
PdfRendererPreV
。
自動切換語言的改良功能
Android 14 在音訊中新增了裝置端多語言辨識功能,可自動切換語言,但這可能會導致字詞遺漏,尤其是在兩次發音之間的暫停時間較短時。Android 15 新增了額外控制項,協助應用程式根據用途調整此切換功能。EXTRA_LANGUAGE_SWITCH_INITIAL_ACTIVE_DURATION_TIME_MILLIS
會將自動切換限制在音訊工作階段的開頭,而 EXTRA_LANGUAGE_SWITCH_MATCH_SWITCHES
會在指定次數的切換後停用語言切換功能。如果您預期在工作階段中會使用單一語言,且該語言應自動偵測,這些選項就特別實用。
改良的 OpenType 變數字型 API
Android 15 improves the usability of the OpenType variable font. You can create
a FontFamily
instance from a variable font without specifying weight axes
with the buildVariableFamily
API. The text renderer overrides the value
of wght
axis to match the displaying text.
Using the API simplifies the code for creating a Typeface
considerably:
Kotlin
val newTypeface = Typeface.CustomFallbackBuilder( FontFamily.Builder( Font.Builder(assets, "RobotoFlex.ttf").build()) .buildVariableFamily()) .build()
Java
Typeface newTypeface = Typeface.CustomFallbackBuilder( new FontFamily.Builder( new Font.Builder(assets, "RobotoFlex.ttf").build()) .buildVariableFamily()) .build();
Previously, to create the same Typeface
, you would need much more code:
Kotlin
val oldTypeface = Typeface.CustomFallbackBuilder( FontFamily.Builder( Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 400") .setWeight(400) .build()) .addFont( Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 100") .setWeight(100) .build() ) .addFont( Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 200") .setWeight(200) .build() ) .addFont( Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 300") .setWeight(300) .build() ) .addFont( Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 500") .setWeight(500) .build() ) .addFont( Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 600") .setWeight(600) .build() ) .addFont( Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 700") .setWeight(700) .build() ) .addFont( Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 800") .setWeight(800) .build() ) .addFont( Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 900") .setWeight(900) .build() ).build() ).build()
Java
Typeface oldTypeface = new Typeface.CustomFallbackBuilder( new FontFamily.Builder( new Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 400") .setWeight(400) .build() ) .addFont( new Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 100") .setWeight(100) .build() ) .addFont( new Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 200") .setWeight(200) .build() ) .addFont( new Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 300") .setWeight(300) .build() ) .addFont( new Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 500") .setWeight(500) .build() ) .addFont( new Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 600") .setWeight(600) .build() ) .addFont( new Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 700") .setWeight(700) .build() ) .addFont( new Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 800") .setWeight(800) .build() ) .addFont( new Font.Builder(assets, "RobotoFlex.ttf") .setFontVariationSettings("'wght' 900") .setWeight(900) .build() ) .build() ).build();
Here's an example of how a Typeface
created with both the old and new APIs
renders:
In this example, the Typeface
created with the old API doesn't have the
capability to create accurate font weights for the 350, 450, 550 and 650
Font
instances, so the renderer falls back to the closest weight. So in
this case, 300 is rendered instead of 350, 400 is rendered instead of 450, and
so on. By contrast, the Typeface
created with the new APIs dynamically creates
a Font
instance for a given weight, so accurate weights are rendered for 350,
450, 550, and 650 as well.
精細的換行符號控制
從 Android 15 開始,TextView
和基礎的斷行元件可保留文字的指定部分,以便在同一行中顯示,藉此改善可讀性。您可以在字串資源或 createNoBreakSpan
中使用 <nobreak>
標記,充分利用這項換行自訂功能。同樣地,您也可以使用 <nohyphen>
標記或 createNoHyphenationSpan
,避免系統斷字。
舉例來說,下列字串資源未包含換行符號,因此在顯示「Pixel 8 Pro」時,文字會在不適當的位置中斷:
<resources>
<string name="pixel8pro">The power and brains behind Pixel 8 Pro.</string>
</resources>
相反地,這個字串資源包含 <nobreak>
標記,可將「Pixel 8 Pro」這個詞組包起來,並防止換行:
<resources>
<string name="pixel8pro">The power and brains behind <nobreak>Pixel 8 Pro.</nobreak></string>
</resources>
下圖顯示這些字串的算繪方式差異:

<nobreak>
標記包裝「Pixel 8 Pro」詞組的一行文字版面配置。
<nobreak>
標記包裝。封存應用程式
Android 和 Google Play 去年宣布支援應用程式封存功能,使用者可以在 Google Play 上使用 Android App Bundle 發布的應用程式,從裝置上部分移除不常使用的應用程式,藉此釋出空間。Android 15 提供應用程式封存和解封存的作業系統層級支援功能,讓所有應用程式商店更輕鬆地實作這項功能。
具有 REQUEST_DELETE_PACKAGES
權限的應用程式可以呼叫
PackageInstaller
requestArchive
方法,要求封存
已安裝的應用程式套件,會移除 APK 和任何快取檔案,但會保留
使用者資料。系統會透過
LauncherApps
API;使用者會看到 UI 樣式,藉此突顯這些
個應用程式已封存。使用者輕觸封存的應用程式時,負責的安裝程式
會收到取消封存的要求,而且還原程序可以
由 ACTION_PACKAGE_ADDED
廣播監控。
使用开发者选项在设备上启用 16 KB 模式

切换以 16KB 页面大小启动设备开发者选项,以在 16 KB 模式下启动设备。
从 Android 15 QPR1 开始,您可以使用某些设备上提供的开发者选项,以 16 KB 模式启动设备并执行设备端测试。在使用开发者选项之前,请依次前往设置 > 系统 > 软件更新,并应用所有可用的更新。
此开发者选项适用于以下设备:
Pixel 8 和 8 Pro(搭载 Android 15 QPR1 或更高版本)
Pixel 8a(搭载 Android 15 QPR1 或更高版本)
Pixel 9、9 Pro 和 9 Pro XL(搭载 Android 15 QPR2 Beta 2 或更高版本)
圖形
Android 15 帶來最新的圖像改善項目,包括 ANGLE 和 Canvas 圖像系統的增強功能。
更新 Android 的 GPU 存取權
Android hardware has evolved quite a bit from the early days where the core OS would run on a single CPU and GPUs were accessed using APIs based on fixed-function pipelines. The Vulkan® graphics API has been available in the NDK since Android 7.0 (API level 24) with a lower-level abstraction that better reflects modern GPU hardware, scales better to support multiple CPU cores, and offers reduced CPU driver overhead — leading to improved app performance. Vulkan is supported by all modern game engines.
Vulkan is Android's preferred interface to the GPU. Therefore, Android 15 includes ANGLE as an optional layer for running OpenGL® ES on top of Vulkan. Moving to ANGLE will standardize the Android OpenGL implementation for improved compatibility, and, in some cases, improved performance. You can test out your OpenGL ES app stability and performance with ANGLE by enabling the developer option in Settings -> System -> Developer Options -> Experimental: Enable ANGLE on Android 15.
The Android ANGLE on Vulkan roadmap

As part of streamlining our GPU stack, going forward we will be shipping ANGLE as the GL system driver on more new devices, with the future expectation that OpenGL/ES will be only available through ANGLE. That being said, we plan to continue support for OpenGL ES on all devices.
Recommended next steps
Use the developer options to select the ANGLE driver for OpenGL ES and test your app. For new projects, we strongly encourage using Vulkan for C/C++.
Canvas 改善項目
Android 15 持續將 Android 的 Canvas 圖形系統改良為現代化版本,並提供額外功能:
Matrix44
提供 4x4 矩陣,用於轉換座標,您應在 3D 中操控畫布時使用此矩陣。clipShader
會將目前的短片與指定的著色器相交,而clipOutShader
會將短片設為目前的短片與著色器的差異,並將每個著色器視為 Alpha 遮罩。這可有效繪製複雜的形狀。
效能和電池
Android 持續致力於協助您提升應用程式的效能和品質。Android 15 導入的 API 可協助您更有效率地執行應用程式中的工作、提升應用程式效能,以及收集應用程式的洞察資訊。
如要瞭解省電最佳做法、如何偵錯網路和耗電量,以及我們如何在 Android 15 和近期 Android 版本中提升背景作業的省電效率,請參閱 Google I/O 的「提升 Android 背景作業的省電效率」演講。
ApplicationStartInfo API
In previous versions of Android, app startup has been a bit of a mystery. It was
challenging to determine within your app whether it started from a cold, warm,
or hot state. It was also difficult to know how long your app spent during the
various launch phases: forking the process, calling onCreate
, drawing the
first frame, and more. When your Application
class was instantiated, you had no
way of knowing whether the app started from a broadcast, a content provider, a
job, a backup, boot complete, an alarm, or an Activity
.
The ApplicationStartInfo
API on Android 15 provides
all of this and more. You can even choose to add your own timestamps into the
flow to help collect timing data in one place. In addition to collecting
metrics, you can use ApplicationStartInfo
to help directly optimize app
startup; for example, you can eliminate the costly instantiation of UI-related
libraries within your Application
class when your app is starting up due to a
broadcast.
應用程式大小詳細資訊
自 Android 8.0 (API 級別 26) 起,Android 已納入 StorageStats.getAppBytes
API,可將應用程式的安裝大小以單一位元組數字做為總和,包括 APK 大小、從 APK 擷取的檔案大小,以及裝置上產生的檔案 (例如預先編譯 (AOT) 的編譯程式碼)。就應用程式使用儲存空間的方式而言,這個數字並沒有太多洞察資訊。
Android 15 新增了 StorageStats.getAppBytesByDataType([type])
API,可讓您深入瞭解應用程式如何使用所有空間,包括 APK 檔案分割、AOT 和加速相關程式碼、DEX 中繼資料、程式庫和引導設定檔。
應用程式管理的剖析
Android 15 包含 ProfilingManager
类,可让您从应用内部收集性能分析信息,例如堆转储、堆分析报告、堆栈采样等。它使用提供的标记为您的应用提供回调,以标识输出文件,该文件将传递给应用的文件目录。该 API 会进行速率限制,以尽可能降低对性能的影响。
为了简化在应用中构建性能分析请求的过程,我们建议您使用 Core 1.15.0-rc01 或更高版本中的相应 Profiling
AndroidX API。
SQLite 資料庫改善項目
Android 15 推出 SQLite API,可公開基礎 SQLite 引擎的進階功能,針對應用程式可能出現的特定效能問題進行調整。這些 API 已隨 SQLite 更新至 3.44.3 版一併提供。
開發人員應參考提升 SQLite 效能的最佳做法 充分運用 SQLite 資料庫,尤其是處理大型資料集時 或執行容易受到延遲時間影響的查詢時
- 唯讀延遲交易:在發出唯讀交易 (不包含寫入陳述式) 時,請使用
beginTransactionReadOnly()
和beginTransactionWithListenerReadOnly(SQLiteTransactionListener)
發出唯讀DEFERRED
交易。這類交易可以同時執行,如果資料庫處於 WAL 模式,則可以與IMMEDIATE
或EXCLUSIVE
交易同時執行。 - 資料列計數與 ID:新增了 API 以擷取已變更的計數
資料列或上次插入的資料列 ID,且無須發出額外查詢。
getLastChangedRowCount()
會傳回資料列數量 最新的 SQL 陳述式已插入、更新或刪除 目前交易,而getTotalChangedRowCount()
會傳回目前連線的計數。getLastInsertRowId()
會傳回要在目前連線中插入的最後一列的rowid
。 - 原始陳述式:發布原始 SQlite 陳述式,略過便利性 以及可能會產生的任何額外處理負擔。
Android 動態效能架構更新
Android 15 持續投入 Android 動態效能架構 (ADPF),這組 API 可讓遊戲和需要耗用大量效能執行的應用程式,直接與 Android 裝置的電力和熱溫系統互動。在支援的裝置上,Android 15 新增 ADPF 功能:
- 提供提示工作階段的省電模式,用來指出相關聯的執行緒應以省電為優先,而非效能,非常適合長時間執行的背景工作負載。
- GPU 和 CPU 工作時間長度都能在提示工作階段中回報,讓系統同時調整 CPU 和 GPU 頻率,以最佳方式滿足工作負載需求。
- 熱力上升空間閾值:根據上升空間預測結果,解讀可能的熱力限制狀態。
如要進一步瞭解如何在應用程式和遊戲中使用 ADPF,請參閱說明文件。
隱私權
Android 15 包含多項功能,可協助應用程式開發人員保護使用者隱私權。
螢幕錄影偵測
Android 15 adds support for apps to detect that they are being recorded. A callback is invoked whenever the app transitions between being visible or invisible within a screen recording. An app is considered visible if activities owned by the registering process's UID are being recorded. This way, if your app is performing a sensitive operation, you can inform the user that they're being recorded.
val mCallback = Consumer<Int> { state ->
if (state == SCREEN_RECORDING_STATE_VISIBLE) {
// We're being recorded
} else {
// We're not being recorded
}
}
override fun onStart() {
super.onStart()
val initialState =
windowManager.addScreenRecordingCallback(mainExecutor, mCallback)
mCallback.accept(initialState)
}
override fun onStop() {
super.onStop()
windowManager.removeScreenRecordingCallback(mCallback)
}
擴充 IntentFilter 功能
Android 15 通过 UriRelativeFilterGroup
支持更精确的 Intent
解析,UriRelativeFilterGroup
包含一组 UriRelativeFilter
对象,这些对象构成一组必须满足的 Intent
匹配规则,包括网址查询参数、网址片段以及屏蔽或排除规则。
您可以在 AndroidManifest
XML 文件中使用 <uri-relative-filter-group>
标记来定义这些规则,该标记可以包含 android:allow
标记。这些代码可以包含使用现有数据代码属性以及 android:query
和 android:fragment
属性的 <data>
代码。
下面是一个 AndroidManifest
语法示例:
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.BROWSABLE" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="http" />
<data android:scheme="https" />
<data android:host="astore.com" />
<uri-relative-filter-group>
<data android:pathPrefix="/auth" />
<data android:query="region=na" />
</uri-relative-filter-group>
<uri-relative-filter-group android:allow="false">
<data android:pathPrefix="/auth" />
<data android:query="mobileoptout=true" />
</uri-relative-filter-group>
<uri-relative-filter-group android:allow="false">
<data android:pathPrefix="/auth" />
<data android:fragmentPrefix="faq" />
</uri-relative-filter-group>
</intent-filter>
私人空間
Private space lets users create a separate space on their device where they can keep sensitive apps away from prying eyes, under an additional layer of authentication. The private space uses a separate user profile. The user can choose to use the device lock or a separate lock factor for the private space.
Apps in the private space show up in a separate container in the launcher, and are hidden from the recents view, notifications, settings, and from other apps when the private space is locked. User-generated and downloaded content (such as media or files) and accounts are separated between the private space and the main space. The system sharesheet and the photo picker can be used to give apps access to content across spaces when the private space is unlocked.
Users can't move existing apps and their data into the private space. Instead, users select an install option in the private space to install an app using whichever app store they prefer. Apps in the private space are installed as separate copies from any apps in the main space (new copies of the same app).
When a user locks the private space, the profile is stopped. While the profile is stopped, apps in the private space are no longer active and can't perform foreground or background activities, including showing notifications.
We recommend that you test your app with private space to make sure your app works as expected, especially if your app falls into one of the following categories:
- Apps with logic for work profiles that assumes that any installed copies of their app that aren't in the main profile are in the work profile.
- Medical apps
- Launcher apps
- App store apps
查詢「所選相片存取權」的最新使用者選取項目
Apps can now highlight only the most-recently-selected photos and videos when
partial access to media permissions is granted. This feature can improve
the user experience for apps that frequently request access to photos and
videos. To use this feature in your app, enable the
QUERY_ARG_LATEST_SELECTION_ONLY
argument when querying MediaStore
through ContentResolver
.
Kotlin
val externalContentUri = MediaStore.Files.getContentUri("external") val mediaColumns = arrayOf( FileColumns._ID, FileColumns.DISPLAY_NAME, FileColumns.MIME_TYPE, ) val queryArgs = bundleOf( // Return only items from the last selection (selected photos access) QUERY_ARG_LATEST_SELECTION_ONLY to true, // Sort returned items chronologically based on when they were added to the device's storage QUERY_ARG_SQL_SORT_ORDER to "${FileColumns.DATE_ADDED} DESC", QUERY_ARG_SQL_SELECTION to "${FileColumns.MEDIA_TYPE} = ? OR ${FileColumns.MEDIA_TYPE} = ?", QUERY_ARG_SQL_SELECTION_ARGS to arrayOf( FileColumns.MEDIA_TYPE_IMAGE.toString(), FileColumns.MEDIA_TYPE_VIDEO.toString() ) )
Java
Uri externalContentUri = MediaStore.Files.getContentUri("external"); String[] mediaColumns = { FileColumns._ID, FileColumns.DISPLAY_NAME, FileColumns.MIME_TYPE }; Bundle queryArgs = new Bundle(); queryArgs.putBoolean(MediaStore.QUERY_ARG_LATEST_SELECTION_ONLY, true); queryArgs.putString(MediaStore.QUERY_ARG_SQL_SORT_ORDER, FileColumns.DATE_ADDED + " DESC"); queryArgs.putString(MediaStore.QUERY_ARG_SQL_SELECTION, FileColumns.MEDIA_TYPE + " = ? OR " + FileColumns.MEDIA_TYPE + " = ?"); queryArgs.putStringArray(MediaStore.QUERY_ARG_SQL_SELECTION_ARGS, new String[] { String.valueOf(FileColumns.MEDIA_TYPE_IMAGE), String.valueOf(FileColumns.MEDIA_TYPE_VIDEO) });
Android 版 Privacy Sandbox
Android 15 includes the latest Android Ad Services extensions, incorporating the latest version of the Privacy Sandbox on Android. This addition is part of our work to develop technologies that improve user privacy and enable effective, personalized advertising experiences for mobile apps. Our privacy sandbox page has more information about the Privacy Sandbox on Android developer preview and beta programs to help you get started.
Health Connect
Android 15 整合了 Health Connect by Android 的最新擴充功能,這是一個安全且集中式的平台,可用於管理及分享應用程式收集的健康與健身資料。這次更新新增了健身、營養、皮膚溫度、訓練計畫等其他資料類型的支援。
皮膚溫度追蹤功能可讓使用者透過穿戴式裝置或其他追蹤裝置,儲存及分享更準確的溫度資料。
訓練計畫是結構化的運動計畫,可協助使用者達成健身目標。訓練計畫支援各種完成和表現目標:
如要進一步瞭解 Android 中的 Health Connect 最新更新,請觀看 Google I/O 大會的 透過 Android 健康資料建構可調整的體驗演講。
應用程式分享螢幕畫面
Android 15 支援應用程式畫面分享功能,因此使用者可以只分享或錄製應用程式視窗,而非整個裝置畫面。這項功能最初是在 Android 14 QPR2 中啟用,其中包含 MediaProjection
回呼,可讓應用程式自訂應用程式螢幕分享體驗。請注意,如果應用程式指定 Android 14 (API 級別 34) 以上版本,則每個 MediaProjection
擷取工作階段都需要使用者同意。
使用者體驗和系統 UI
Android 15 可讓應用程式開發人員和使用者進一步控管及彈性設定裝置,以符合自身需求。
如要進一步瞭解如何運用 Android 15 的最新改良功能,提升應用程式的使用者體驗,請觀看 Google I/O 的「改善 Android 應用程式的使用者體驗」演講。
使用 Generated Previews API 取得更豐富的小工具預覽畫面
Before Android 15, the only way to provide widget picker previews was to specify a static image or layout resource. These previews often differ significantly from the look of the actual widget when it is placed on the home screen. Also, static resources can't be created with Jetpack Glance, so a Glance developer had to screenshot their widget or create an XML layout to have a widget preview.
Android 15 adds support for generated previews. This means that app widget
providers can generate RemoteViews
to use as the picker preview, instead
of a static resource.

Push API
Apps can provide generated previews through a push API. Apps can provide
previews at any point in their lifecycle, and don't receive an explicit request
from the host to provide previews. Previews are persisted in AppWidgetService
,
and hosts can request them on-demand. The following example loads an XML widget
layout resource and sets it as the preview:
AppWidgetManager.getInstance(appContext).setWidgetPreview(
ComponentName(
appContext,
SociaLiteAppWidgetReceiver::class.java
),
AppWidgetProviderInfo.WIDGET_CATEGORY_HOME_SCREEN,
RemoteViews("com.example", R.layout.widget_preview)
)
The expected flow is:
- At any time, the widget provider calls
setWidgetPreview
. The provided previews are persisted inAppWidgetService
with other provider info. setWidgetPreview
notifies hosts of an updated preview through theAppWidgetHost.onProvidersChanged
callback. In response, the widget host reloads all of its provider information.- When displaying a widget preview, the host checks
AppWidgetProviderInfo.generatedPreviewCategories
, and if the chosen category is available, callsAppWidgetManager.getWidgetPreview
to return the saved preview for this provider.
When to call setWidgetPreview
Because there is no callback to provide previews, apps can choose to send previews at any point when they are running. How often to update the preview depends on the widget's use case.
The following list describes the two main categories of preview use cases:
- Providers that show real data in their widget previews, such as personalized or recent information. These providers can set the preview once the user has signed in or has done initial configuration in their app. After this, they can set up a periodic task to update the previews at their chosen cadence. Examples of this type of widget could be a photo, calendar, weather or news widget.
- Providers that show static information in previews or quick-action widgets that don't display any data. These providers can set previews once, when the app first launches. Examples of this type of widget include a drive quick actions widget or chrome shortcuts widget.
Some providers might show static previews on the hub mode picker, but real information on the homescreen picker. These providers should follow the guidance for both of these use cases to set previews.
子母畫面
Android 15 introduces changes in Picture-in-Picture (PiP) ensuring an even smoother transition when entering into PiP mode. This will be beneficial for apps having UI elements overlaid on top of their main UI, which goes into PiP.
Developers use the onPictureInPictureModeChanged
callback to define logic
that toggles the visibility of the overlaid UI elements. This callback is
triggered when the PiP enter or exit animation is completed. Beginning in
Android 15, the PictureInPictureUiState
class includes another state.
With this UI state, apps targeting Android 15 (API level 35) will observe the
Activity#onPictureInPictureUiStateChanged
callback being invoked with
isTransitioningToPip()
as soon as the PiP animation starts. There are
many UI elements that are not relevant for the app when it is in PiP mode, for
example views or layout that include information such as suggestions, upcoming
video, ratings, and titles. When the app goes to PiP mode, use the
onPictureInPictureUiStateChanged
callback to hide these UI elements. When the
app goes to full screen mode from the PiP window, use
onPictureInPictureModeChanged
callback to unhide these elements, as shown in
the following examples:
override fun onPictureInPictureUiStateChanged(pipState: PictureInPictureUiState) {
if (pipState.isTransitioningToPip()) {
// Hide UI elements
}
}
override fun onPictureInPictureModeChanged(isInPictureInPictureMode: Boolean) {
if (isInPictureInPictureMode) {
// Unhide UI elements
}
}
This quick visibility toggle of irrelevant UI elements (for a PiP window) helps ensure a smoother and flicker-free PiP enter animation.
更完善的「零打擾」規則
AutomaticZenRule
可讓應用程式自訂注意力
管理 (請勿打擾) 規則,並決定何時啟用或停用
具體做法是指示 Kubernetes 建立並維護
一或多個代表這些 Pod 的物件Android 15 大幅強化上述規則,目標是改善
使用者體驗包含以下強化項目:
- 將類型新增至
AutomaticZenRule
,讓系統套用特殊類型 來處理部分規則 - 將圖示新增至
AutomaticZenRule
,讓模式更容易辨識。 - 將
triggerDescription
字串新增至AutomaticZenRule
,用來描述 規則對使用者的有效條件 - 已新增
ZenDeviceEffects
敬上 到AutomaticZenRule
,允許規則觸發灰階等事件 顯示螢幕、夜間模式,或是調暗桌布
為通知管道設定 VibrationEffect
Android 15 支援使用 NotificationChannel.setVibrationEffect
為特定管道設定豐富的震動效果,讓使用者不必查看裝置,就能區分不同類型的通知。
媒體投影狀態列晶片和自動停止
媒體投影功能可能會揭露使用者的私人資訊。新的醒目狀態列方塊可讓使用者瞭解任何正在進行的螢幕投影作業。使用者可以輕觸方塊停止投放、分享或錄製螢幕畫面。此外,為了提供更直覺的使用者體驗,現在裝置螢幕鎖定時,任何進行中的螢幕投影作業都會自動停止。

大螢幕和板型規格
Android 15 可讓應用程式充分運用 Android 的板型規格,包括大螢幕、可翻轉和折疊式裝置。
改善大螢幕多工處理功能
Android 15 为用户提供了在大屏设备上更好地进行多任务处理的方式。对于 例如,用户可以保存自己喜爱的分屏应用组合, 访问并固定屏幕上的任务栏,以便在应用之间快速切换。这意味着 让应用具备自适应能力比以往任何时候都更加重要。
Google I/O 大会上有一些关于构建自适应 Android 的会议 应用和使用 Material 3 构建界面 自适应库 我们的文档中提供了更多帮助信息,帮助您针对大型语言 。
支援封面螢幕
應用程式可以宣告 Android 15 使用的屬性,讓 Application
或 Activity
顯示在支援翻轉裝置的小型封面螢幕上。這些螢幕太小,無法視為 Android 應用程式可執行的相容目標,但您的應用程式可以選擇支援這些螢幕,讓應用程式可在更多地方使用。
連線能力
Android 15 更新了平台,讓您的應用程式能使用通訊和無線技術的最新進展。
衛星支援
Android 15 continues to extend platform support for satellite connectivity and includes some UI elements to ensure a consistent user experience across the satellite connectivity landscape.
Apps can use ServiceState.isUsingNonTerrestrialNetwork()
to
detect when a device is connected to a satellite, giving them more awareness of
why full network services might be unavailable. Additionally, Android 15
provides support for SMS and MMS apps as well as preloaded RCS apps to use
satellite connectivity for sending and receiving messages.

更流暢的 NFC 體驗
Android 15 is working to make the tap to pay experience more seamless and
reliable while continuing to support Android's robust NFC app ecosystem. On
supported devices, apps can request the NfcAdapter
to enter
observe mode, where the device listens but doesn't respond to NFC
readers, sending the app's NFC service PollingFrame
objects to process. The PollingFrame
objects can be used to auth
ahead of the first communication to the NFC reader, allowing for a one tap
transaction in many cases.
In addition, apps can register a filter on supported devices so they can be notified of polling loop activity, which allows for smooth operation with multiple NFC-aware applications.
錢包角色
Android 15 引入了钱包角色,可与用户的首选钱包应用更紧密地集成。此角色会取代 NFC 默认的感应式付款设置。用户可以前往设置 > 应用 > 默认应用,管理钱包角色持有者。
在为在付款类别中注册的 AID 路由 NFC 感应式付款时,系统会使用钱包角色。点按操作始终会转到 Google 钱包角色持有者,除非有已注册相同 AID 的其他应用在前台运行。
此角色还用于确定“Google 钱包”快速访问功能块在启用后应显示在何处。将角色设为“无”时,“快速访问”功能块不可用,并且支付类别 NFC 点按仅传送到前台应用。
安全性
Android 15 可協助您提升應用程式安全性、保護應用程式資料,並讓使用者進一步瞭解及掌控自己的資料。如要進一步瞭解我們如何強化使用者防護措施,以及保護應用程式免於新威脅侵擾,請觀看 Google I/O 的這場演講。
整合 Credential Manager 與自動填入功能
從 Android 15 開始,開發人員可以將特定檢視畫面 (例如使用者名稱或密碼欄位) 與憑證管理工具要求連結,在登入程序中更輕鬆地提供客製化使用者體驗。當使用者將焦點放在其中一個檢視畫面時,系統會將相應要求傳送至憑證管理工具。系統會從各個供應器匯總產生的憑證,並顯示在自動填入備用 UI 中,例如內嵌建議或下拉式建議。Jetpack androidx.credentials 程式庫是開發人員偏好的端點,不久後將可在 Android 15 以上版本中進一步強化這項功能。
整合單鍵註冊和登入功能與生物特徵辨識提示功能
Credential Manager integrates biometric prompts into the credential creation and sign-in processes, eliminating the need for providers to manage biometric prompts. As a result, credential providers only need to focus on the results of the create and get flows, augmented with the biometric flow result. This simplified process creates a more efficient and streamlined credential creation and retrieval process.
端對端加密的金鑰管理
We are introducing the E2eeContactKeysManager
in Android 15, which
facilitates end-to-end encryption (E2EE) in your Android apps by providing an
OS-level API for the storage of cryptographic public keys.
The E2eeContactKeysManager
is designed to integrate with the platform
contacts app to give users a centralized way to manage and verify their
contacts' public keys.
內容 URI 的權限檢查
Android 15 推出一組 API,可針對內容 URI 執行權限檢查:
Context.checkContentUriPermissionFull
:會對內容 URI 執行完整權限檢查。Activity
資訊清單屬性requireContentUriPermissionFromCaller
:這會在活動啟動時,對提供的內容 URI 強制執行指定權限。Activity
呼叫端的ComponentCaller
類別:代表啟動活動的應用程式。
無障礙設定
Android 15 新增了多項功能,可提升使用者無障礙體驗。
更優質的點字體驗
In Android 15, we've made it possible for TalkBack to support Braille displays that are using the HID standard over both USB and secure Bluetooth.
This standard, much like the one used by mice and keyboards, will help Android support a wider range of Braille displays over time.
國際化
Android 15 新增了多項功能,可提升使用者在不同語言環境下的裝置使用體驗。
中日韓變數字型
Starting with Android 15, the font file for Chinese, Japanese, and Korean (CJK) languages, NotoSansCJK, is now a variable font. Variable fonts open up possibilities for creative typography in CJK languages. Designers can explore a broader range of styles and create visually striking layouts that were previously difficult or impossible to achieve.

字元間對齊
從 Android 15 開始,系統可根據字母間距,使用字母間距
使用 JUSTIFICATION_MODE_INTER_CHARACTER
。有多字的理由
Android 8.0 (API 級別 26) 首次推出的功能,以及跨字元
對於使用
空白字元做為區隔,例如中文、日文等。

JUSTIFICATION_MODE_NONE
設定日文內容的版面配置。
JUSTIFICATION_MODE_NONE
設定英文內容的版面配置。
JUSTIFICATION_MODE_INTER_WORD
設定日文內容的版面配置。
JUSTIFICATION_MODE_INTER_WORD
的英文文字版面配置。
JUSTIFICATION_MODE_INTER_CHARACTER
的日文文字版面配置。
JUSTIFICATION_MODE_INTER_CHARACTER
為英文內容的版面配置。自動換行設定
Android started supporting phrase-based line breaks for Japanese and Korean in
Android 13 (API level 33). However, while phrase-based line breaks improve the
readability of short lines of text, they don't work well for long lines of text.
In Android 15, apps can apply phrase-based line breaks only for short lines
of text, using the LINE_BREAK_WORD_STYLE_AUTO
option. This option selects the best word style option for the text.
For short lines of text, phrase-based line breaks are used, functioning the same
as LINE_BREAK_WORD_STYLE_PHRASE
, as shown in the
following image:

LINE_BREAK_WORD_STYLE_AUTO
applies phrase-based line breaks to improve the readability of the text.
This is the same as applying
LINE_BREAK_WORD_STYLE_PHRASE
.For longer lines of text, LINE_BREAK_WORD_STYLE_AUTO
uses a no
line-break word style, functioning the same as
LINE_BREAK_WORD_STYLE_NONE
, as shown in the
following image:

LINE_BREAK_WORD_STYLE_AUTO
applies no line-break word style to improve the readability of the text.
This is the same as applying
LINE_BREAK_WORD_STYLE_NONE
.額外日文變體假名字型
In Android 15, a font file for old Japanese Hiragana (known as Hentaigana) is bundled by default. The unique shapes of Hentaigana characters can add a distinctive flair to artwork or design while also helping to preserve accurate transmission and understanding of ancient Japanese documents.

VideoLAN cone Copyright (c) 1996-2010 VideoLAN. 任何人都可以使用或修改這個標誌或修改版本,以便提及 VideoLAN 專案或 VideoLAN 團隊開發的任何產品,但這並不表示專案認可該標誌或修改版本。
Vulkan 和 Vulkan 標誌是 Khronos Group Inc.的註冊商標。
OpenGL 是註冊商標,OpenGL ES 標誌則是 Hewlett Packard Enterprise 的商標,已獲 Khronos 使用許可。