Media3 mediasession implementation "androidx. ConnectionResult. Media3 playback architecture If you have access to a Player, you should call its methods directly to issue playback commands. 참고: 앱에서 ExoPlayer 이외의 Mar 9, 2024 · Apparently, we can set an HLS media source only to ExoPlayer and not to MediaController in the Activity/Composable. setSessionActivity ()：传入媒体播放界面对应的PendingIntent，客户端通过该PendingIntent可以快速切换到播放界面； 3. MediaSession Media3 中的 MediaSessionConnector 功能 将 MediaBrowserService 迁移到 自動處理狀態 Media3 程式庫會使用播放器的狀態自動更新媒體工作階段。因此您不需要手動處理從播放器到工作階段的對應。 這與平台媒體工作階段不同，您必須獨立於播放器本身建立及維護 PlaybackState，例如指出任何 錯誤。 不重複的工作階段 ID 根據預設， MediaSession. Apr 11, 2024 · Jetpack Media3 offers a robust framework for building media player apps on Android, with ExoPlayer as the default implementation of the… 一、Media3库简介 1. When the MediaNotification is dismissed/swiped the audio keeps playing. Builder to build a MediaSession. 应该是. Examples of client apps that use a media controller include: Android system media controls Android Wear OS companion app Android Auto and Oct 12, 2022 · I'm trying to implement the Android Media3 MediaSessionService and MediaController but for some reason the playback doesn't start. setActive ()：设置该MediaSession为active即活跃状态，每次设置都会 Jul 7, 2024 · A bit late, I believe you are missing MediaSession. Provides a detailed reference for implementing and customizing MediaSession. Commands may originate from physical buttons such as the play button on a headset or TV remote control. MediaSessionServiceを使用して、Androidアプリでバックグラウンド再生機能を実装する方法について説明します。 自动状态处理 Media3 库会使用播放器的状态自动更新媒体会话。因此，您无需手动处理从玩家到会话的映射。 这与平台媒体会话不同，在平台媒体会话中，您需要独立于播放器本身创建和维护 PlaybackState，例如为了指示任何 错误。 唯一会话 ID 默认情况下， MediaSession. 1 Media3是什么？ 官方释义： Jetpack Media3 is the new home for media libraries that enables Android apps to display rich audio and visual experiences. Connecting the media session to the player allows an app to advertise media playback externally and to receive playback commands from external sources. So I implemented a minimal MediaSessionService Mar 5, 2023 · I am trying to implement media3 mediaSessionService and play music. Nov 21, 2025 · In Media3, the default player is the ExoPlayer class, which implements the Player interface. 0-beta03. 0-rc01 with a mediasession service, like describe in developer guide It's generated a media notification automatically and i want to change colors (text, backgr Jul 12, 2025 · The MediaSession interface of the Media Session API allows a web page to provide custom behaviors for standard media playback interactions, and to report metadata that can be sent by the user agent to the device or operating system for presentation in standardized user interface elements. 个人理解： Media3 Nov 21, 2025 · There are two ways to connect to a Media app: MediaController MediaBrowser MediaController A media controller interacts with a media session to query and control a media app's playback. media3. Sep 4, 2023 · I build an exoplayer with Media3 1. Called when a controller is about to connect to this session. Las sesiones multimedia proporcionan una forma universal de interactuar con un reproductor de audio o video. getExtras(). Jun 9, 2024 · Implementation of Media 3: Mastering Background Playback with MediaSessionService and MediaController Background A few days ago while exploring Media3 to migrate a project from the old ExoPlayer … Media3利用了新的架构，将MediaBrowser和播放能力内聚在少数几个组件中，比如 MediaSession 和 MediaController。 通过这种设计，Media3能够让媒体播放和控制更加直接和高效，同时也简化了应用架构。 Nov 19, 2025 · Android’s Media3 library (successor to ExoPlayer and the legacy MediaSessionCompat framework) simplifies building robust media playback experiences. Note: In case your app is using a different player than ExoPlayer, you Jan 19, 2023 · I build a web radio player with Media3 1. I use the sample code from Developers page. 目前. However, even Nov 21, 2025 · The Media3 library provides a series of interfaces that allow you to support background playback. I've created mediaservice as described in official documentation. Builder 会创建一个以空字符串作为 Jun 9, 2022 · How to implement MediaSessionService and build a very simple audioplayback app with media3? I tried it, but unsuccessfully. 国内网上关于MediaSession的最全面的一篇了，建议收藏。 本文的目的之一就是通过梳理总结MediaSession框架相关的知识点，来完成即将升级的 #*Media3 知识点。 同时顺便分享给各位同学 ⚠️ 注意 自动状态处理 Media3 库会使用播放器的状态自动更新媒体会话。因此，您无需手动处理从玩家到会话的映射。 这与平台媒体会话不同，在平台媒体会话中，您需要独立于播放器本身创建和维护 PlaybackState，例如为了指示任何 错误。 唯一会话 ID 默认情况下， MediaSession. Provides API reference for MediaSession, enabling developers to manage media playback and interact with media controllers in Android applications. Builder 를 사용하여 MediaSession 을 빌드 합니다. In Media3, the MediaController API implements the Player interface. media3:media3-session:1. Media3 offers a simple architecture with powerful customization, reliability, and optimizations based on device capabilities to abstract away the complexity that comes with fragmentation. Oct 10, 2025 · Jetpack Media3 is the new home for media libraries that enables Android apps to display rich audio and visual experiences. All session and player commands are made available and 车载多媒体开发MediaSession框架，本篇. May 23, 2025 · 一、MediaSession：跨设备媒体控制的 “中央枢纽” 一句话理解：MediaSession 是 Android 系统为媒体应用提供的 “智能管家”，它统一管理播放状态（如播放 / 暂停）、接收跨设备控制指令（如耳机、车载系统），并将信息同步到通知栏、锁屏等界面。 重要: Media3 が以前のメディア API と異なる主な特徴の一つは、コンポーネント間のコネクタが不要になったことです。 新しい MediaSession クラスは、Player インターフェースを実装する任意のクラスを受け取ります。 UI も同様です。 Nov 21, 2025 · Media3 automatically syncs the state of the Player with the state of the MediaSession. I want to stop audio when the Feb 10, 2025 · Create a MediaSession when your app is preparing to play media. ControllerInfo) or set MediaSession は、音声や動画のプレーヤーを操作するための汎用的な手段を提供します。 Media3 では、デフォルトのプレーヤーは Player インターフェースを実装する ExoPlayer クラスです。 Dec 18, 2023 · Basic background playback implementation with Media3 MediaSessionService While creating a media playback application, being able to play the media in the background is almost essential for a MediaSession API reference for Android developers to manage media playback, handle media keys, and advertise playback externally with finer grain controls. Note: If you want to prevent a controller from calling a method, specify the available commands in MediaSession. Using a ForwardingPlayer is discouraged as it has the disadvantage to remove the command on the player level and hence for all controllers. 레거시 MediaSessionCompat 를 만든 코드 사이트에서 androidx. Map fatal and non-fatal errors to and from the platform session. Dec 4, 2022 · EDIT: Since this comment was written, Media3 has introduced an API throught the media notification controller, which is now the preferred way to remove player commands for the media notification. What am I doing wrong? I think I did everything exactly as describ 通常，我们希望在应用不在前台时播放媒体。例如，音乐播放器通常会在用户锁定设备或使用其他应用时继续播放音乐。Media3 库提供了一系列接口，可让您支持后台播放。 注意： 以下针对 MediaSessionService 的说明同样适用于 MediaLibraryService， 提供内容库 时应使用 MediaLibraryService 而不是 MediaSessionService Apr 13, 2025 · Advanced Guide to Media3 — Part 1 Modern Android media applications require sophisticated handling of audio playback, notifications, audio focus, and system interactions. kt has implementation of MediaController using SessionToken and ListenableFuture Controllers that gets the state of the player and session. session. I am using Sumsung a70 android 11. 0. You might be curious about what it does Media3 会自动将 Player 的状态与 MediaSession 的状态同步。此方法适用于任何 Player 实现，包括 ExoPlayer 、 CastPlayer 或自定义实现。 向其他客户端授予控制权 客户端应用可以实现 媒体控制器 来控制媒体会话的播放。如需接收这些请求，请在构建 MediaSession 时设置 回调 对象。 当控制器即将连接到您的媒体 Aug 7, 2024 · The Media Session API provides a way to customize media notifications. 4. It does this by providing metadata for display by the user agent for the media your web app is playing. Use a Media Session Service Sep 13, 2024 · Returns the MediaSession. ExoPlayer: The default implementation of the Player interface in Media3. Conectar la sesión multimedia al reproductor permite que una app anuncie la reproducción de contenido multimedia de forma externa y reciba comandos de reproducción de fuentes externas Jun 10, 2024 · Web developers can customize media notifications and respond to media related events such as seeking or track changing with the Media Session API. MediaSession. It's generated a media notification automatically but I don't know how to add Title and sub title to Feb 23, 2024 · Note: If you are integrating with the ExoPlayer MediaSession extension, you don't need to implement your own MediaSessionCompat. I want the 虽然 MediaSession 不实现 Player 接口，但在创建 MediaSession 时需要 Player。 其目的是允许其他进程或线程访问 Player。 Media3 播放架构 如果您有权访问 Player，则应直接调用其方法来发出播放命令。 您可以通过实现 MediaSession 来通告播放并授予外部来源播放控制权。 Oct 27, 2021 · Propagate extras passed to media3's MediaSession[Builder]. This works with any Player implementation, including ExoPlayer, CastPlayer, or a custom implementation. Dec 8, 2022 · 在创建MediaSession时，主要做了三件事： 1. setAvailableCommands. To receive these requests, set a callback object when building your MediaSession. MediaStyle by default. ControllerInfo for the controller that sent the current request for a Player method. Aug 22, 2017 · The MediaSession extension mediates between an ExoPlayer instance and a MediaSession. Grant control to other clients Client apps can implement a media controller to control playback of your media session. I also couldn't find a simple documentation Jun 18, 2024 · I'm trying to implement media3 MediaSession and mediaController. setCallBack ()：客户端控制媒体播放时，会进行通知回调，执行对应的播放控制动作； 2. g. At its core are MediaSession and MediaController —components that manage media sessions, handle playback commands, and synchronize state between media apps and external controllers (e. MediaSession: An API that advertises media playback to and receives playback command requests from external clients. Callback in Android applications using the Media3 library. It automatically maps the player state to the playback state of the media session, and handles actions sent by Aug 27, 2024 · 文章浏览阅读607次。通常我们写视频播放器可以使用mediaPalyer、ExoPlayer等，UI我们自己实现。我们开发过程中自己回实现一套接口或者回调，来处理Ui和Player直接的通信，也是可以的，但是如果我们有加入了其他的Ui控制，或者其他的app的连接，显的有些麻烦。所以谷歌推出了MediaSession框架，可以很好 Nov 21, 2025 · Although a MediaSession doesn't implement the Player interface, it requires a Player when creating one. But service dont start, i dont see notification and after approximately 10sec app is crashing. Pass the player to construct the session builder. onConnect (MediaSession, MediaSession. Callback for the custom notification commands for which we have to set callback while creating the MediaSession. Return a result for the controller by using MediaSession. MediaSessionService: A service that holds a MediaSession メディアアプリに接続する方法は 2 つあります。 MediaController MediaBrowser MediaController メディア コントローラはメディア セッションとやり取りして、メディアアプリの再生をクエリして制御します。Media3 では、 MediaController API が Player インターフェースを実装します。メディア コントローラを Sep 3, 2017 · Understanding MediaSession (Part 4/4) How to use it for complex use cases Introduction The goal of this series of articles is to give you a deep understanding of MediaSession, what it is good for … Android X Media3 迁移指南 bookmark_border 本页内容 概览 为什么要迁移到 Jetpack Media3 要迁移到 AndroidX Media3 的媒体 API 前提条件 迁移支持脚本的 ExoPlayer 将 MediaSessionConnector 替换为 androidx. MediaSession 로 바꿉니다. Callback. accept (SessionCommands, Player. Commands) or the MediaSession. The MediaActivity. 0" MediaSessionCompat 을 androidx. En Media3, el reproductor predeterminado es la clase ExoPlayer, que implementa la interfaz Player. See also Android Media Controls. AcceptedResultBuilder. Builder 會建立工作階段，並以空 Mar 15, 2025 · As Android documentation says: A MediaSessionService will automatically create a MediaStyle notification for you in the form of a MediaNotification. 플레이어를 전달 하여 세션 빌더를 구성합니다. Previously I have It also implements MediaSession. 8. Is there way to pass URL and token to the service so that HLSMediaSource factory May 26, 2023 · Media3 solves this problem by using ExoPlayer as its media player. The following code snippet is an example of how to set the appropriate callback and flags: Feb 14, 2024 · はじめに 何を話すのか？ 下記のようなアプリがあるとして、バックグラウンド再生に備えるためにMediaSessionServiceとMediaControllerでビデオを再生する方法について話します。 すでにMedia3のExoPlayerで、ビデオを再生する機能がある ただし、ExoPlayerのインスタンスはViewModelで保持している . Sep 3, 2017 · Understanding MediaSession (Part 1/4) Is MediaSession for me? As an Android developer working with Media APIs, you might have heard about MediaSession. Note: The following instructions for MediaSessionService equally apply to MediaLibraryService, which should be used instead of MediaSessionService when serving a content library. When Sep 9, 2020 · In this codelab, you’ll expand a video sample to add support for MediaSession. ExoPlayer implements the player interface that both the UI widgets and MediaSession can accept. This method will return a non-null value while Player methods triggered by a controller are executed. If this callback is not overridden, it allows all controllers to connect that can access the session. you are right seekForward and seekBackward are not out of the box in notifications anymore, I believe since android 12 they gutted it out. , lockscreen, headphones, or Android Auto). Builder 会创建一个以空字符串作为 Oct 1, 2023 · Media app components Player: An interface that defines traditional high-level functionality for an audio or video player, such as playback controls. At the code site where you have created the legacy MediaSessionCompat, use androidx. Jun 26, 2024 · Media3兼容类似Media2中的 MediaBrowser 和远程播放控制功能，但它实现了一种更轻量级的方式来管理这些操作，不再需要显式地管理服务连接。 Media3利用了新的架构，将 MediaBrowser 和播放能力内聚在少数几个组件中，比如 MediaSession 和 MediaController。 Nov 21, 2025 · implementation "androidx. as described in official documentation, I'm supposed to use use a lateinit var for mediacontroller and then initialize it listener for mediaControllerFuture in onStart function override. This allows Android to control playback from outside your app, for instance through the Google Assistant, remote controls on TV, or on-screen controls on the lock screen and Wear OS. 0 is now released! This release brings several exciting enhancements, including new preload utilities for playback with ExoPlayer, improved HDR support in Transformer, a revamped Aug 16, 2024 · In Android 13+/API 33+ Media3: MediaSessionService creates a Notification. Jetpack Media3 是媒体库的新平台，可让 Android 应用呈现丰富的音频和视频体验。Media3 提供了一个简单的架构，可根据设备功能进行强大的自定义、可靠性和优化，从而消除碎片化带来的复杂性。 本文档简要介绍了使用 Media3 实现播放和编辑用例的关键 API。 播放组件 Media3 为播放用例提供了多个关键 Feb 21, 2024 · class PlayerService: MediaSessionService(){ @Inject lateinit var player: ExoPlayer @Inject lateinit var mediaSession: MediaSession @SuppressLint Dec 1, 2023 · Maybe it's just me but Media3 Create a MediaController section in android docs is just missing the last part for me which is getting the "player" and using it in a composable. setSessionExtras() to a media1 controller's PlaybackStateCompat. The MediaSessionConnector takes care of mapping the player state to the media session and delegating events received from the media session. Jul 25, 2024 · Media3 1. 0" Replace the MediaSessionCompat with androidx. Its purpose is to provide access to the Player from other processes or threads.