{"id":488,"date":"2025-05-08T16:35:01","date_gmt":"2025-05-08T08:35:01","guid":{"rendered":"https:\/\/trantor.ink\/?p=488"},"modified":"2025-05-08T16:35:02","modified_gmt":"2025-05-08T08:35:02","slug":"android-media3-%e4%b8%ad%e7%9a%84-mediasession-%e6%a1%86%e6%9e%b6","status":"publish","type":"post","link":"https:\/\/trantor.ink\/?p=488","title":{"rendered":"Android Media3 \u4e2d\u7684 MediaSession \u6846\u67b6"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/trantor.ink\/?p=488\/#1_%E6%A1%86%E6%9E%B6%E8%AE%BE%E8%AE%A1_Framework_Design\" >1. \u6846\u67b6\u8bbe\u8ba1 (Framework Design)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/trantor.ink\/?p=488\/#2_%E6%A1%86%E6%9E%B6%E4%BD%BF%E7%94%A8_Framework_Usage\" >2. \u6846\u67b6\u4f7f\u7528 (Framework Usage)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/trantor.ink\/?p=488\/#3_%E6%A1%86%E6%9E%B6%E6%8F%90%E4%BE%9B%E7%9A%84%E8%87%AA%E5%AE%9A%E4%B9%89%E8%83%BD%E5%8A%9B_Customization_Capabilities\" >3. \u6846\u67b6\u63d0\u4f9b\u7684\u81ea\u5b9a\u4e49\u80fd\u529b (Customization Capabilities)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/trantor.ink\/?p=488\/#4_%E5%BC%80%E5%8F%91%E9%9F%B3%E4%B9%90_App_%E4%BC%9A%E7%94%A8%E5%88%B0%E7%9A%84%E6%A1%86%E6%9E%B6%E8%83%BD%E5%8A%9B_Application_in_a_Music_App\" >4. \u5f00\u53d1\u97f3\u4e50 App \u4f1a\u7528\u5230\u7684\u6846\u67b6\u80fd\u529b (Application in a Music App)<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>MediaSession \u662f\u6784\u5efa\u5a92\u4f53\u5e94\u7528\uff08\u5c24\u5176\u662f\u90a3\u4e9b\u9700\u8981\u5728\u540e\u53f0\u64ad\u653e\u3001\u54cd\u5e94\u5a92\u4f53\u6309\u94ae\u3001\u4ee5\u53ca\u4e0e\u5176\u4ed6\u5e94\u7528\u548c\u7cfb\u7edf\u7ec4\u4ef6\u4ea4\u4e92\u7684\u5e94\u7528\uff09\u7684\u6838\u5fc3\u7ec4\u4ef6\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_%E6%A1%86%E6%9E%B6%E8%AE%BE%E8%AE%A1_Framework_Design\"><\/span>1. \u6846\u67b6\u8bbe\u8ba1 (Framework Design)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Media3 \u4e2d\u7684 MediaSession \u6846\u67b6\u662f Jetpack Media3 \u5e93\u7684\u4e00\u90e8\u5206\uff0c\u5b83\u662f\u5728\u65e7\u7248 <code>android.media.session.MediaSession<\/code> (API 21+) \u548c <code>androidx.media.session.MediaSessionCompat<\/code> \u7684\u57fa\u7840\u4e0a\u8fdb\u884c\u4e86\u73b0\u4ee3\u5316\u548c\u7b80\u5316\u7684\u8bbe\u8ba1\u3002\u5176\u6838\u5fc3\u8bbe\u8ba1\u76ee\u6807\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u89e3\u8026\u4e0e\u6a21\u5757\u5316<\/strong>: Media3 \u5c06\u5a92\u4f53\u64ad\u653e\u7684\u5404\u4e2a\u65b9\u9762\uff08\u5982 UI\u3001\u64ad\u653e\u903b\u8f91\u3001\u5a92\u4f53\u8d44\u6e90\u7ba1\u7406\uff09\u5206\u79bb\u5f00\u6765\u3002MediaSession \u4e3b\u8981\u8d1f\u8d23<strong>\u58f0\u660e\u5e94\u7528\u7684\u5a92\u4f53\u64ad\u653e\u72b6\u6001<\/strong>\u5e76<strong>\u63a5\u6536\u6765\u81ea\u5916\u90e8\u7684\u64ad\u653e\u63a7\u5236\u547d\u4ee4<\/strong>\u3002<\/li>\n\n\n\n<li><strong>\u5355\u4e00\u4e8b\u5b9e\u6765\u6e90 (Single Source of Truth)<\/strong>: MediaSession \u4f5c\u4e3a\u5e94\u7528\u5a92\u4f53\u72b6\u6001\u7684\u4e2d\u5fc3\u67a2\u7ebd\u3002\u5b83\u5411 Android \u7cfb\u7edf\u548c\u5176\u4ed6\u5e94\u7528\u5e7f\u64ad\u5f53\u524d\u7684\u64ad\u653e\u4fe1\u606f\uff08\u5143\u6570\u636e\u3001\u64ad\u653e\u72b6\u6001\u3001\u64ad\u653e\u961f\u5217\u7b49\uff09\uff0c\u5e76\u63a5\u6536\u6765\u81ea\u5b83\u4eec\u7684\u63a7\u5236\u6307\u4ee4\u3002<\/li>\n\n\n\n<li><strong>\u4e0e <code>Player<\/code> \u63a5\u53e3\u7684\u96c6\u6210<\/strong>: Media3 \u7684\u6838\u5fc3\u662f <code>androidx.media3.common.Player<\/code> \u63a5\u53e3\u3002MediaSession \u901a\u5e38\u4e0e\u4e00\u4e2a\u5b9e\u73b0\u4e86 <code>Player<\/code> \u63a5\u53e3\u7684\u64ad\u653e\u5668\u5b9e\u4f8b\uff08\u5982 <code>ExoPlayer<\/code>\uff09\u534f\u540c\u5de5\u4f5c\u3002<code>Player<\/code> \u8d1f\u8d23\u5b9e\u9645\u7684\u5a92\u4f53\u89e3\u7801\u548c\u6e32\u67d3\uff0c\u800c MediaSession \u5219\u5c06 <code>Player<\/code> \u7684\u72b6\u6001\u548c\u63a7\u5236\u66b4\u9732\u7ed9\u5916\u90e8\u3002<\/li>\n\n\n\n<li><strong>\u5411\u540e\u517c\u5bb9\u6027<\/strong>: \u867d\u7136 Media3 \u662f\u65b0\u7684\u5e93\uff0c\u4f46\u5b83\u5728\u8bbe\u8ba1\u65f6\u8003\u8651\u4e86\u4e0e\u65e7\u7248 Android \u7cfb\u7edf\u548c\u5176\u4ed6\u5a92\u4f53\u5e94\u7528\u7684\u517c\u5bb9\u6027\u3002\u5b83\u5728\u5e95\u5c42\u4ecd\u7136\u4f1a\u5229\u7528\u7cfb\u7edf\u63d0\u4f9b\u7684 MediaSession \u673a\u5236\u3002<\/li>\n\n\n\n<li><strong>\u7b80\u5316\u751f\u547d\u5468\u671f\u7ba1\u7406<\/strong>: Media3 \u65e8\u5728\u7b80\u5316\u4e0e Android \u7ec4\u4ef6\u751f\u547d\u5468\u671f\uff08\u5982 Service\u3001Activity\uff09\u7684\u96c6\u6210\u3002<\/li>\n\n\n\n<li><strong>\u6613\u4e8e\u6d4b\u8bd5<\/strong>: \u6a21\u5757\u5316\u7684\u8bbe\u8ba1\u4f7f\u5f97\u5bf9\u5a92\u4f53\u903b\u8f91\u8fdb\u884c\u5355\u5143\u6d4b\u8bd5\u548c\u96c6\u6210\u6d4b\u8bd5\u66f4\u52a0\u5bb9\u6613\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u6838\u5fc3\u7ec4\u4ef6\u548c\u6982\u5ff5\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><code>MediaSession<\/code><\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>\u6838\u5fc3\u804c\u8d23<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5411\u7cfb\u7edf\u548c\u5176\u4ed6\u5e94\u7528\u62a5\u544a\u5e94\u7528\u7684\u5a92\u4f53\u64ad\u653e\u72b6\u6001\uff08\u6b63\u5728\u64ad\u653e\u4ec0\u4e48\u3001\u64ad\u653e\u8fdb\u5ea6\u3001\u53ef\u7528\u7684\u63a7\u5236\u547d\u4ee4\u7b49\uff09\u3002<\/li>\n\n\n\n<li>\u63a5\u6536\u6765\u81ea\u7cfb\u7edf\uff08\u5982\u5a92\u4f53\u6309\u94ae\u3001Google Assistant\uff09\u3001\u5176\u4ed6\u5e94\u7528\u6216\u84dd\u7259\u8bbe\u5907\u7684\u64ad\u653e\u63a7\u5236\u547d\u4ee4\u3002<\/li>\n\n\n\n<li>\u7ba1\u7406\u64ad\u653e\u961f\u5217\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5173\u8054\u5bf9\u8c61<\/strong>: \u901a\u5e38\u4e0e\u4e00\u4e2a <code>Player<\/code> \u5b9e\u4f8b\u5173\u8054\u3002\u5b83\u901a\u8fc7\u76d1\u542c <code>Player<\/code> \u7684\u4e8b\u4ef6\u6765\u66f4\u65b0\u81ea\u8eab\u72b6\u6001\uff0c\u5e76\u5c06\u5916\u90e8\u547d\u4ee4\u8f6c\u53d1\u7ed9 <code>Player<\/code>\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><code>Player<\/code> (\u4f8b\u5982 <code>ExoPlayer<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u8d1f\u8d23\u5a92\u4f53\u5185\u5bb9\u7684\u52a0\u8f7d\u3001\u89e3\u7801\u3001\u6e32\u67d3\u548c\u64ad\u653e\u63a7\u5236\uff08\u64ad\u653e\u3001\u6682\u505c\u3001\u5feb\u8fdb\u3001\u5feb\u9000\u7b49\uff09\u3002<\/li>\n\n\n\n<li>MediaSession \u5e76\u4e0d\u76f4\u63a5\u5904\u7406\u5a92\u4f53\u6570\u636e\u6d41\uff0c\u800c\u662f\u4f9d\u8d56 <code>Player<\/code> \u6765\u5b8c\u6210\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><code>MediaSession.Callback<\/code><\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u4e00\u4e2a\u63a5\u53e3\uff0c\u5141\u8bb8\u5e94\u7528\u81ea\u5b9a\u4e49\u5982\u4f55\u54cd\u5e94\u6765\u81ea\u63a7\u5236\u5668\uff08Controller\uff09\u7684\u5a92\u4f53\u547d\u4ee4\u3002\u4f8b\u5982\uff0c\u5f53\u7528\u6237\u6309\u4e0b\u201c\u64ad\u653e\u201d\u6309\u94ae\u65f6\uff0c<code>Callback<\/code> \u4e2d\u7684 <code>onPlay()<\/code> \u65b9\u6cd5\u4f1a\u88ab\u8c03\u7528\u3002<\/li>\n\n\n\n<li>\u5f00\u53d1\u8005\u53ef\u4ee5\u5b9e\u73b0\u6b64\u56de\u8c03\u6765\u62e6\u622a\u3001\u4fee\u6539\u6216\u5904\u7406\u7279\u5b9a\u7684\u64ad\u653e\u547d\u4ee4\uff0c\u7136\u540e\u518d\uff08\u6216\u4e0d\uff09\u5c06\u5176\u59d4\u6258\u7ed9 <code>Player<\/code>\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><code>MediaController<\/code><\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5176\u4ed6\u5e94\u7528\u6216\u7cfb\u7edf\u7ec4\u4ef6\u7528\u6765\u63a7\u5236 <code>MediaSession<\/code> \u7684\u5ba2\u6237\u7aef\u3002<\/li>\n\n\n\n<li>\u5b83\u53ef\u4ee5\u53d1\u73b0\u6b63\u5728\u8fd0\u884c\u7684 <code>MediaSession<\/code>\uff0c\u83b7\u53d6\u5176\u72b6\u6001\uff0c\u5e76\u5411\u5176\u53d1\u9001\u64ad\u653e\u547d\u4ee4\u3002<\/li>\n\n\n\n<li>\u5728 Media3 \u4e2d\uff0c\u4f60\u4e5f\u53ef\u4ee5\u5728\u5e94\u7528\u5185\u90e8\u4f7f\u7528 <code>MediaController<\/code> \u4e0e\u4f60\u81ea\u5df1\u7684 <code>MediaSession<\/code> \u8fdb\u884c\u4ea4\u4e92\uff0c\u4f8b\u5982\u4ece Activity \u63a7\u5236\u540e\u53f0\u64ad\u653e\u670d\u52a1\u4e2d\u7684 <code>MediaSession<\/code>\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><code>MediaSessionService<\/code><\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u4e00\u4e2a\u4e13\u95e8\u7528\u4e8e\u6258\u7ba1 <code>MediaSession<\/code> \u548c <code>Player<\/code> \u7684 Android <code>Service<\/code>\u3002<\/li>\n\n\n\n<li>\u8fd9\u662f\u63a8\u8350\u7684\u5728\u540e\u53f0\u8fd0\u884c\u5a92\u4f53\u64ad\u653e\u7684\u65b9\u5f0f\uff0c\u786e\u4fdd\u5373\u4f7f\u5e94\u7528 UI \u4e0d\u53ef\u89c1\uff0c\u64ad\u653e\u4e5f\u80fd\u7ee7\u7eed\u3002<\/li>\n\n\n\n<li>\u5b83\u4f1a\u81ea\u52a8\u5904\u7406\u670d\u52a1\u7684\u751f\u547d\u5468\u671f\u3001\u524d\u53f0\u670d\u52a1\u7ba1\u7406\uff08\u5bf9\u4e8e Android O \u53ca\u66f4\u9ad8\u7248\u672c\u81f3\u5173\u91cd\u8981\uff0c\u4ee5\u907f\u514d\u540e\u53f0\u64ad\u653e\u88ab\u7ec8\u6b62\uff09\u4ee5\u53ca\u5a92\u4f53\u6309\u94ae\u63a5\u6536\u8005\u7684\u6ce8\u518c\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><code>MediaLibraryService<\/code> (\u53ef\u9009\uff0c\u4f46\u63a8\u8350\u7528\u4e8e\u5a92\u4f53\u6d4f\u89c8)<\/strong>:\n<ul class=\"wp-block-list\">\n<li><code>MediaSessionService<\/code> \u7684\u4e00\u4e2a\u5b50\u7c7b\uff0c\u589e\u52a0\u4e86\u5a92\u4f53\u6d4f\u89c8\u529f\u80fd\u3002<\/li>\n\n\n\n<li>\u5b83\u5141\u8bb8\u5ba2\u6237\u7aef\uff08\u5982 Android Auto\u3001Wear OS \u6216\u5176\u4ed6\u5a92\u4f53\u6d4f\u89c8\u5e94\u7528\uff09\u67e5\u8be2\u548c\u6d4f\u89c8\u4f60\u7684\u5e94\u7528\u63d0\u4f9b\u7684\u5a92\u4f53\u5185\u5bb9\u5e93\u3002<\/li>\n\n\n\n<li>\u901a\u8fc7\u5b9e\u73b0 <code>MediaLibrarySession.Callback<\/code> \u4e2d\u7684 <code>onGetLibraryRoot()<\/code>, <code>onGetChildren()<\/code>, <code>onGetItem()<\/code> \u7b49\u65b9\u6cd5\u6765\u63d0\u4f9b\u5a92\u4f53\u5e93\u7ed3\u6784\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><code>MediaNotificationManager<\/code> \/ <code>PlayerNotificationManager<\/code><\/strong>:\n<ul class=\"wp-block-list\">\n<li>Media3 \u63d0\u4f9b\u4e86\u5de5\u5177\u6765\u7b80\u5316\u5a92\u4f53\u64ad\u653e\u901a\u77e5\u7684\u521b\u5efa\u548c\u7ba1\u7406\u3002<\/li>\n\n\n\n<li>\u8fd9\u4e9b\u901a\u77e5\u4f1a\u663e\u793a\u5f53\u524d\u64ad\u653e\u7684\u5143\u6570\u636e\u3001\u64ad\u653e\u63a7\u4ef6\uff0c\u5e76\u4e0e <code>MediaSession<\/code> \u7684\u72b6\u6001\u540c\u6b65\u3002<\/li>\n\n\n\n<li><code>PlayerNotificationManager<\/code>\uff08\u6765\u81ea ExoPlayer \u65e7\u7248\uff0c\u4f46\u5728 Media3 \u4e2d\u4ecd\u53ef\u627e\u5230\u7c7b\u4f3c\u6982\u5ff5\u6216\u901a\u8fc7 <code>MediaSessionService<\/code> \u81ea\u52a8\u5904\u7406\uff09\u8d1f\u8d23\u5c06 <code>Player<\/code> \u7684\u72b6\u6001\u8f6c\u6362\u6210\u4e00\u4e2a\u6301\u7eed\u7684\u901a\u77e5\u3002<code>MediaSessionService<\/code> \u5185\u90e8\u96c6\u6210\u4e86\u901a\u77e5\u7ba1\u7406\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>\u6570\u636e\u6d41\u548c\u4ea4\u4e92\u6a21\u578b\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u521d\u59cb\u5316<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5e94\u7528\u521b\u5efa\u4e00\u4e2a <code>Player<\/code> \u5b9e\u4f8b (\u5982 <code>ExoPlayer<\/code>)\u3002<\/li>\n\n\n\n<li>\u5e94\u7528\u521b\u5efa\u4e00\u4e2a <code>MediaSession<\/code>\uff0c\u5e76\u5c06 <code>Player<\/code> \u5b9e\u4f8b\u4e0e\u4e4b\u5173\u8054\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u9700\u8981\u540e\u53f0\u64ad\u653e\uff0c<code>MediaSession<\/code> \u548c <code>Player<\/code> \u901a\u5e38\u6258\u7ba1\u5728 <code>MediaSessionService<\/code> \u4e2d\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u72b6\u6001\u5e7f\u64ad<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5f53 <code>Player<\/code> \u7684\u72b6\u6001\u53d1\u751f\u53d8\u5316\uff08\u4f8b\u5982\uff0c\u5f00\u59cb\u64ad\u653e\u3001\u6682\u505c\u3001\u5207\u6362\u66f2\u76ee\u3001\u52a0\u8f7d\u5143\u6570\u636e\uff09\uff0c\u5b83\u4f1a\u901a\u77e5\u5173\u8054\u7684 <code>MediaSession<\/code>\u3002<\/li>\n\n\n\n<li><code>MediaSession<\/code> \u66f4\u65b0\u5176\u5185\u90e8\u72b6\u6001\uff0c\u5e76\u901a\u8fc7 Android \u7cfb\u7edf\u7684\u5a92\u4f53\u5b50\u7cfb\u7edf\u5c06\u8fd9\u4e9b\u72b6\u6001\uff08\u5982 <code>PlaybackStateCompat<\/code>, <code>MediaMetadataCompat<\/code>\uff09\u5e7f\u64ad\u51fa\u53bb\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u547d\u4ee4\u63a5\u6536<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u7cfb\u7edf\u6216\u5176\u4ed6\u5e94\u7528\u7684 <code>MediaController<\/code> \u53ef\u4ee5\u53d1\u73b0\u6b64 <code>MediaSession<\/code>\u3002<\/li>\n\n\n\n<li>\u7528\u6237\u901a\u8fc7\u5a92\u4f53\u6309\u94ae\uff08\u8033\u673a\u3001\u84dd\u7259\u8bbe\u5907\uff09\u3001\u7cfb\u7edf UI\uff08\u5982\u901a\u77e5\u680f\u3001\u9501\u5c4f\u63a7\u4ef6\uff09\u6216\u8bed\u97f3\u547d\u4ee4\uff08\u5982 Google Assistant\uff09\u4e0e\u5a92\u4f53\u8fdb\u884c\u4ea4\u4e92\u3002<\/li>\n\n\n\n<li>\u8fd9\u4e9b\u4ea4\u4e92\u88ab\u8f6c\u6362\u6210\u5a92\u4f53\u547d\u4ee4\uff0c\u53d1\u9001\u5230\u5e94\u7528\u7684 <code>MediaSession<\/code>\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u547d\u4ee4\u5904\u7406<\/strong>:\n<ul class=\"wp-block-list\">\n<li><code>MediaSession<\/code> \u63a5\u6536\u5230\u547d\u4ee4\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u8bbe\u7f6e\u4e86 <code>MediaSession.Callback<\/code>\uff0c\u76f8\u5e94\u7684\u56de\u8c03\u65b9\u6cd5\u4f1a\u88ab\u8c03\u7528\u3002<\/li>\n\n\n\n<li>\u5728\u56de\u8c03\u65b9\u6cd5\u4e2d\uff0c\u5e94\u7528\u53ef\u4ee5\u51b3\u5b9a\u5982\u4f55\u5904\u7406\u8be5\u547d\u4ee4\u3002\u901a\u5e38\uff0c\u8fd9\u4e9b\u547d\u4ee4\u4f1a\u88ab\u59d4\u6258\u7ed9\u5173\u8054\u7684 <code>Player<\/code> \u5b9e\u4f8b\u6267\u884c\uff08\u4f8b\u5982\uff0c\u8c03\u7528 <code>player.play()<\/code> \u6216 <code>player.pause()<\/code>\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>UI \u66f4\u65b0 (\u53ef\u9009\uff0c\u5e94\u7528\u5185)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u5e94\u7528\u7684 UI (\u5982 Activity \u6216 Fragment) \u9700\u8981\u663e\u793a\u64ad\u653e\u72b6\u6001\u6216\u63a7\u5236\u64ad\u653e\uff0c\u5b83\u4e5f\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a <code>MediaController<\/code> \u6765\u8fde\u63a5\u5230\u540c\u4e00\u4e2a <code>MediaSession<\/code>\uff08\u5373\u4f7f\u662f\u5728\u540c\u4e00\u4e2a\u5e94\u7528\u5185\uff09\uff0c\u4ece\u800c\u63a5\u6536\u72b6\u6001\u66f4\u65b0\u5e76\u53d1\u9001\u547d\u4ee4\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u8fd9\u79cd\u8bbe\u8ba1\u4f7f\u5f97\u5a92\u4f53\u64ad\u653e\u903b\u8f91\u4e0e UI \u548c\u7cfb\u7edf\u4ea4\u4e92\u6e05\u6670\u5206\u79bb\uff0c\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6d4b\u8bd5\u6027\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_%E6%A1%86%E6%9E%B6%E4%BD%BF%E7%94%A8_Framework_Usage\"><\/span>2. \u6846\u67b6\u4f7f\u7528 (Framework Usage)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u4f7f\u7528 Media3 \u4e2d\u7684 MediaSession \u6846\u67b6\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<p><strong>\u6b65\u9aa4 1: \u6dfb\u52a0\u4f9d\u8d56<\/strong><\/p>\n\n\n\n<p>\u5728\u4f60\u7684 <code>build.gradle<\/code> (Module: app) \u6587\u4ef6\u4e2d\u6dfb\u52a0 Media3 \u7684\u76f8\u5173\u4f9d\u8d56\uff1a<\/p>\n\n\n\n<p>Gradle<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">dependencies {\n    \/\/ \u6838\u5fc3 Media3 \u5e93\uff0c\u5305\u542b Player \u63a5\u53e3, ExoPlayer, MediaSession \u7b49\n    implementation \"androidx.media3:media3-session:1.3.1\" \/\/ \u4f7f\u7528\u6700\u65b0\u7248\u672c\n    implementation \"androidx.media3:media3-exoplayer:1.3.1\"\n    implementation \"androidx.media3:media3-ui:1.3.1\" \/\/ \u5982\u679c\u9700\u8981\u5185\u7f6e\u7684 UI \u7ec4\u4ef6\n\n    \/\/ \u5982\u679c\u9700\u8981 HLS, DASH, SmoothStreaming \u652f\u6301\uff0c\u53ef\u4ee5\u6dfb\u52a0\u76f8\u5e94\u7684 ExoPlayer \u6a21\u5757\n    implementation \"androidx.media3:media3-exoplayer-hls:1.3.1\"\n    implementation \"androidx.media3:media3-exoplayer-dash:1.3.1\"\n}\n<\/pre>\n\n\n\n<p><em>\u8bf7\u6ce8\u610f\u68c0\u67e5\u5e76\u4f7f\u7528\u6700\u65b0\u7684 Media3 \u7248\u672c\u3002<\/em><\/p>\n\n\n\n<p><strong>\u6b65\u9aa4 2: \u521b\u5efa Player \u5b9e\u4f8b<\/strong><\/p>\n\n\n\n<p>\u901a\u5e38\u4f7f\u7528 <code>ExoPlayer<\/code>\uff1a<\/p>\n\n\n\n<p>Java<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5728\u4f60\u7684 Service \u6216 Activity \u4e2d\nimport androidx.media3.exoplayer.ExoPlayer;\n\nPlayer player = new ExoPlayer.Builder(context).build();\n<\/pre>\n\n\n\n<p><strong>\u6b65\u9aa4 3: \u521b\u5efa MediaSession<\/strong><\/p>\n\n\n\n<p>Java<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5728\u4f60\u7684 Service \u6216 Activity \u4e2d\nimport androidx.media3.session.MediaSession;\n\n\/\/ 1. \u521b\u5efa MediaSession\nMediaSession mediaSession = new MediaSession.Builder(context, player)\n        .setId(\"my_awesome_music_session\") \/\/ \u53ef\u9009\uff0c\u4f46\u63a8\u8350\u7528\u4e8e\u8c03\u8bd5\n        \/\/ .setSessionActivity(pendingIntentToOpenActivity) \/\/ \u7528\u6237\u70b9\u51fb\u901a\u77e5\u65f6\u6253\u5f00\u7684 PendingIntent\n        \/\/ .setCallback(new MyMediaSessionCallback()) \/\/ \u53ef\u9009\uff0c\u7528\u4e8e\u81ea\u5b9a\u4e49\u547d\u4ee4\u5904\u7406\n        .build();\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>context<\/code>: \u901a\u5e38\u662f <code>ApplicationContext<\/code> \u6216 <code>Service<\/code> context\u3002<\/li>\n\n\n\n<li><code>player<\/code>: \u4f60\u5728\u6b65\u9aa4 2 \u4e2d\u521b\u5efa\u7684 <code>Player<\/code> \u5b9e\u4f8b\u3002<\/li>\n\n\n\n<li><code>setId()<\/code>: \u4e3a\u4f1a\u8bdd\u8bbe\u7f6e\u4e00\u4e2a\u552f\u4e00\u7684 ID\uff0c\u65b9\u4fbf\u8c03\u8bd5\u3002<\/li>\n\n\n\n<li><code>setSessionActivity()<\/code>: \u8bbe\u7f6e\u4e00\u4e2a <code>PendingIntent<\/code>\uff0c\u5f53\u7528\u6237\u4ece\u901a\u77e5\u6216\u5176\u4ed6\u5730\u65b9\u9009\u62e9\u4f60\u7684\u4f1a\u8bdd\u65f6\uff0c\u4f1a\u542f\u52a8\u8fd9\u4e2a Intent\uff08\u901a\u5e38\u662f\u6253\u5f00\u4f60\u7684\u64ad\u653e\u5668 UI Activity\uff09\u3002<\/li>\n\n\n\n<li><code>setCallback()<\/code>: (\u53ef\u9009\u4f46\u5e38\u7528) \u8bbe\u7f6e\u4e00\u4e2a <code>MediaSession.Callback<\/code> \u6765\u5904\u7406\u81ea\u5b9a\u4e49\u547d\u4ee4\u6216\u5728\u547d\u4ee4\u6267\u884c\u524d\u540e\u6267\u884c\u989d\u5916\u903b\u8f91\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u6b65\u9aa4 4: (\u63a8\u8350) \u4f7f\u7528 MediaSessionService \u8fdb\u884c\u540e\u53f0\u64ad\u653e<\/strong><\/p>\n\n\n\n<p>\u8fd9\u662f\u7ba1\u7406\u540e\u53f0\u64ad\u653e\u3001\u5a92\u4f53\u6309\u94ae\u548c\u901a\u77e5\u7684\u63a8\u8350\u65b9\u5f0f\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u521b\u5efa <code>MyMediaSessionService.java<\/code><\/strong>:<\/li>\n<\/ul>\n\n\n\n<p>Java<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import androidx.media3.common.AudioAttributes;\nimport androidx.media3.common.C;\nimport androidx.media3.exoplayer.ExoPlayer;\nimport androidx.media3.session.MediaSession;\nimport androidx.media3.session.MediaSessionService;\n\npublic class MyMediaSessionService extends MediaSessionService {\n\n    private MediaSession mediaSession = null;\n    private Player player = null;\n\n    @Override\n    public void onCreate() {\n        super.onCreate();\n        initializePlayerAndSession();\n    }\n\n    private void initializePlayerAndSession() {\n        player = new ExoPlayer.Builder(this).build();\n        \/\/ \u8bbe\u7f6e\u97f3\u9891\u5c5e\u6027\uff0c\u4f8b\u5982\u7528\u9014\u548c\u5185\u5bb9\u7c7b\u578b\uff0c\u8fd9\u5bf9\u4e8e\u97f3\u9891\u7126\u70b9\u7ba1\u7406\u5f88\u91cd\u8981\n        AudioAttributes audioAttributes = new AudioAttributes.Builder()\n                .setContentType(C.AUDIO_CONTENT_TYPE_MUSIC)\n                .setUsage(C.USAGE_MEDIA)\n                .build();\n        player.setAudioAttributes(audioAttributes, true \/* handleAudioFocus *\/); \/\/ true \u8868\u793a\u8ba9 ExoPlayer \u81ea\u52a8\u5904\u7406\u97f3\u9891\u7126\u70b9\n\n        mediaSession = new MediaSession.Builder(this, player)\n                .setCallback(new MyMediaSessionCallback()) \/\/ \u53ef\u9009\u7684\u56de\u8c03\n                .build();\n    }\n\n    @Override\n    public MediaSession onGetSession(MediaSession.ControllerInfo controllerInfo) {\n        \/\/ \u8fd4\u56de MediaSession \u5b9e\u4f8b\uff0c\u5141\u8bb8\u5ba2\u6237\u7aef\u8fde\u63a5\n        return mediaSession;\n    }\n\n    \/\/ (\u53ef\u9009) \u81ea\u5b9a\u4e49\u56de\u8c03\n    private class MyMediaSessionCallback implements MediaSession.Callback {\n        \/\/ \u5728\u8fd9\u91cc\u91cd\u5199\u9700\u8981\u81ea\u5b9a\u4e49\u5904\u7406\u7684\u547d\u4ee4\uff0c\u4f8b\u5982 onPlay, onPause, onSkipToNext \u7b49\n        \/\/ \u4f8b\u5982\uff1a\u5728\u64ad\u653e\u524d\u68c0\u67e5\u7f51\u7edc\uff0c\u6216\u8005\u8bb0\u5f55\u5206\u6790\u6570\u636e\n    }\n\n    @Override\n    public void onDestroy() {\n        if (player != null) {\n            player.release();\n            player = null;\n        }\n        if (mediaSession != null) {\n            mediaSession.release();\n            mediaSession = null;\n        }\n        super.onDestroy();\n    }\n}\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5728 <code>AndroidManifest.xml<\/code> \u4e2d\u58f0\u660e Service<\/strong>:<\/li>\n<\/ul>\n\n\n\n<p>XML<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;service\n    android:name=\".MyMediaSessionService\"\n    android:foregroundServiceType=\"mediaPlayback\"\n    android:exported=\"true\">\n    &lt;intent-filter>\n        &lt;action android:name=\"androidx.media3.session.MediaSessionService\"\/>\n        &lt;action android:name=\"android.media.browse.MediaBrowserService\"\/>\n    &lt;\/intent-filter>\n&lt;\/service>\n<\/pre>\n\n\n\n<p>foregroundServiceType=&#8221;mediaPlayback&#8221; \u5bf9\u4e8e Android 9 (API 28) \u53ca\u66f4\u9ad8\u7248\u672c\u662f\u5fc5\u9700\u7684\u3002<\/p>\n\n\n\n<p>exported=&#8221;true&#8221; \u5141\u8bb8\u5176\u4ed6\u5e94\u7528\u8fde\u63a5\u5230\u4f60\u7684\u670d\u52a1\u3002<\/p>\n\n\n\n<p><strong>\u6b65\u9aa4 5: \u7ba1\u7406 Player \u548c MediaSession \u7684\u751f\u547d\u5468\u671f<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u521d\u59cb\u5316<\/strong>: \u5728 <code>Service.onCreate()<\/code> \u6216 <code>Activity.onCreate()<\/code> \u4e2d\u521b\u5efa\u548c\u8bbe\u7f6e <code>Player<\/code> \u548c <code>MediaSession<\/code>\u3002<\/li>\n\n\n\n<li><strong>\u91ca\u653e\u8d44\u6e90<\/strong>: \u5728 <code>Service.onDestroy()<\/code> \u6216 <code>Activity.onDestroy()<\/code> \u4e2d\u8c03\u7528 <code>player.release()<\/code> \u548c <code>mediaSession.release()<\/code>\u3002\u8fd9\u975e\u5e38\u91cd\u8981\uff0c\u4ee5\u907f\u514d\u8d44\u6e90\u6cc4\u6f0f\u3002\u5982\u679c <code>MediaSession<\/code> \u4e0e <code>Player<\/code> \u5173\u8054\uff0c\u901a\u5e38\u91ca\u653e <code>Player<\/code> \u4f1a\u81ea\u52a8\u66f4\u65b0 <code>MediaSession<\/code> \u7684\u72b6\u6001\uff0c\u4f46\u663e\u5f0f\u91ca\u653e\u4e24\u8005\u662f\u597d\u4e60\u60ef\u3002<code>MediaSessionService<\/code> \u4f1a\u5728\u9002\u5f53\u7684\u65f6\u5019\u5e2e\u52a9\u7ba1\u7406\u8fd9\u4e9b\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u6b65\u9aa4 6: \u52a0\u8f7d\u548c\u64ad\u653e\u5a92\u4f53<\/strong><\/p>\n\n\n\n<p>\u4f7f\u7528 <code>Player<\/code> \u63a5\u53e3\u7684\u65b9\u6cd5\u6765\u63a7\u5236\u64ad\u653e\uff1a<\/p>\n\n\n\n<p>Java<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5047\u8bbe player \u662f\u4f60\u7684 ExoPlayer \u5b9e\u4f8b\nimport androidx.media3.common.MediaItem;\n\n\/\/ \u521b\u5efa\u4e00\u4e2a MediaItem\nMediaItem mediaItem = MediaItem.fromUri(\"YOUR_MEDIA_URI_HERE\"); \/\/ \u4f8b\u5982 http:\/\/, file:\/\/, asset:\/\/\n\n\/\/ \u5c06 MediaItem \u6dfb\u52a0\u5230\u64ad\u653e\u5217\u8868\u5e76\u51c6\u5907\u64ad\u653e\nplayer.setMediaItem(mediaItem);\nplayer.prepare(); \/\/ \u5f02\u6b65\u51c6\u5907\n\n\/\/ \u5f00\u59cb\u64ad\u653e (\u53ef\u4ee5\u5728\u51c6\u5907\u5b8c\u6210\u540e\uff0c\u6216\u8005\u7528\u6237\u8bf7\u6c42\u65f6)\nplayer.play(); \/\/ \u6216\u8005 player.setPlayWhenReady(true);\n\n\/\/ \u5176\u4ed6\u63a7\u5236:\n\/\/ player.pause();\n\/\/ player.seekTo(positionMs);\n\/\/ player.setRepeatMode(Player.REPEAT_MODE_ONE \/ Player.REPEAT_MODE_ALL \/ Player.REPEAT_MODE_OFF);\n\/\/ player.setShuffleModeEnabled(true\/false);\n<\/pre>\n\n\n\n<p><strong>\u6b65\u9aa4 7: (\u53ef\u9009) \u4ece Activity\/Fragment \u63a7\u5236 MediaSessionService<\/strong><\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u7684 <code>MediaSession<\/code> \u6258\u7ba1\u5728 <code>MediaSessionService<\/code> \u4e2d\uff0c\u4f60\u7684 UI (Activity\/Fragment) \u53ef\u4ee5\u4f7f\u7528 <code>MediaController<\/code> \u6765\u4e0e\u4e4b\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>Java<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5728\u4f60\u7684 Activity \u6216 Fragment \u4e2d\nimport androidx.media3.session.MediaController;\nimport androidx.media3.session.SessionToken;\nimport android.content.ComponentName;\nimport com.google.common.util.concurrent.ListenableFuture;\nimport com.google.common.util.concurrent.MoreExecutors;\nimport java.util.concurrent.ExecutionException;\n\n\/\/ ...\n\nSessionToken sessionToken =\n    new SessionToken(this, new ComponentName(this, MyMediaSessionService.class));\n\nListenableFuture&lt;MediaController> controllerFuture =\n    new MediaController.Builder(this, sessionToken).buildAsync();\n\ncontrollerFuture.addListener(\n    () -> {\n        try {\n            MediaController mediaController = controllerFuture.get();\n            \/\/ \u73b0\u5728\u4f60\u53ef\u4ee5\u4f7f\u7528 mediaController \u6765\u63a7\u5236\u64ad\u653e\u548c\u76d1\u542c\u72b6\u6001\u53d8\u5316\n            \/\/ \u4f8b\u5982: mediaController.play(), mediaController.pause()\n            \/\/ mediaController.addListener(new Player.Listener() { ... });\n            \/\/ \u5728\u4e0d\u9700\u8981\u65f6\u91ca\u653e: mediaController.release();\n        } catch (ExecutionException | InterruptedException e) {\n            \/\/ \u5904\u7406\u9519\u8bef\n        }\n    },\n    MoreExecutors.directExecutor() \/\/ \u6216\u8005 ContextCompat.getMainExecutor(this)\n);\n\n\/\/ \u8bb0\u5f97\u5728 Activity\/Fragment \u9500\u6bc1\u65f6\u91ca\u653e controller\n\/\/ private MediaController mediaController;\n\/\/ @Override\n\/\/ protected void onDestroy() {\n\/\/     if (mediaController != null) {\n\/\/         MediaController.releaseFuture(controllerFuture); \/\/ \u6216 mediaController.release() \u5982\u679c\u5df2\u7ecf\u83b7\u53d6\n\/\/     }\n\/\/     super.onDestroy();\n\/\/ }\n<\/pre>\n\n\n\n<p><strong>\u6b65\u9aa4 8: \u5904\u7406\u901a\u77e5<\/strong><\/p>\n\n\n\n<p>\u5f53\u4f60\u4f7f\u7528 <code>MediaSessionService<\/code> \u65f6\uff0c\u5b83\u4f1a\u81ea\u52a8\u4e3a\u4f60\u5904\u7406\u5a92\u4f53\u901a\u77e5\u7684\u521b\u5efa\u548c\u66f4\u65b0\u3002\u901a\u77e5\u4f1a\u663e\u793a\u5f53\u524d\u7684\u5a92\u4f53\u5143\u6570\u636e\u548c\u64ad\u653e\u63a7\u4ef6\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7 <code>MediaSessionService.setMediaNotificationProvider()<\/code> \u6765\u81ea\u5b9a\u4e49\u901a\u77e5\u7684\u5916\u89c2\u548c\u884c\u4e3a\uff0c\u6216\u8005\u76f4\u63a5\u8ba9\u5176\u4f7f\u7528\u9ed8\u8ba4\u63d0\u4f9b\u8005\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u672a\u4f7f\u7528 <code>MediaSessionService<\/code>\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u4f7f\u7528 <code>PlayerNotificationManager<\/code> (\u6765\u81ea <code>androidx.media3:media3-ui<\/code> \u5305) \u624b\u52a8\u521b\u5efa\u548c\u7ba1\u7406\u901a\u77e5\uff0c\u5e76\u5c06\u5176\u4e0e <code>MediaSession<\/code> \u540c\u6b65\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_%E6%A1%86%E6%9E%B6%E6%8F%90%E4%BE%9B%E7%9A%84%E8%87%AA%E5%AE%9A%E4%B9%89%E8%83%BD%E5%8A%9B_Customization_Capabilities\"><\/span>3. \u6846\u67b6\u63d0\u4f9b\u7684\u81ea\u5b9a\u4e49\u80fd\u529b (Customization Capabilities)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Media3 MediaSession \u6846\u67b6\u63d0\u4f9b\u4e86\u5e7f\u6cdb\u7684\u81ea\u5b9a\u4e49\u80fd\u529b\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u6839\u636e\u5177\u4f53\u9700\u6c42\u8c03\u6574\u5176\u884c\u4e3a\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong><code>MediaSession.Callback<\/code><\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>\u62e6\u622a\u548c\u5904\u7406\u5a92\u4f53\u547d\u4ee4<\/strong>: \u8fd9\u662f\u6700\u6838\u5fc3\u7684\u81ea\u5b9a\u4e49\u70b9\u3002\u4f60\u53ef\u4ee5\u91cd\u5199 <code>Callback<\/code> \u4e2d\u7684\u65b9\u6cd5\uff08\u5982 <code>onPlay<\/code>, <code>onPause<\/code>, <code>onSkipToNext<\/code>, <code>onSeekTo<\/code>, <code>onSetRating<\/code>, <code>onCustomCommand<\/code> \u7b49\uff09\u6765\u6539\u53d8\u9ed8\u8ba4\u884c\u4e3a\u3002\n<ul class=\"wp-block-list\">\n<li><strong>\u793a\u4f8b<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5728 <code>onPlay()<\/code> \u4e2d\u68c0\u67e5\u7528\u6237\u662f\u5426\u62e5\u6709\u64ad\u653e\u6743\u9650\u3002<\/li>\n\n\n\n<li>\u5728 <code>onSkipToNext()<\/code> \u4e2d\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684\u4e0b\u4e00\u66f2\u76ee\u9009\u62e9\u903b\u8f91\uff08\u4f8b\u5982\uff0c\u57fa\u4e8e\u7528\u6237\u559c\u597d\u63a8\u8350\uff09\u3002<\/li>\n\n\n\n<li>\u53d1\u9001\u5206\u6790\u4e8b\u4ef6\u8bb0\u5f55\u7528\u6237\u7684\u64ad\u653e\u884c\u4e3a\u3002<\/li>\n\n\n\n<li>\u5728\u5b9e\u9645\u6267\u884c\u64ad\u653e\u524d\u52a0\u8f7d\u5e7f\u544a\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u81ea\u5b9a\u4e49\u547d\u4ee4 (Custom Commands)<\/strong>: \u901a\u8fc7 <code>onCustomCommand<\/code> (\u53d1\u9001\u65b9) \u548c <code>MediaSession.Callback.onCustomCommand<\/code> (\u63a5\u6536\u65b9)\uff0c\u5e94\u7528\u53ef\u4ee5\u5b9a\u4e49\u548c\u5904\u7406\u6807\u51c6\u5a92\u4f53\u547d\u4ee4\u4e4b\u5916\u7684\u81ea\u5b9a\u4e49\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u5207\u6362\u97f3\u6548\u3001\u6dfb\u52a0\u5230\u6536\u85cf\u5939\u3001\u8c03\u6574\u64ad\u653e\u901f\u5ea6\u7684\u7279\u5b9a\u6863\u4f4d\u7b49\u3002<\/li>\n\n\n\n<li><strong>\u4fee\u6539\u64ad\u653e\u961f\u5217<\/strong>: <code>onAddMediaItems<\/code>, <code>onSetMediaItems<\/code>, <code>onSetShuffleModeEnabled<\/code>, <code>onSetRepeatMode<\/code> \u7b49\u56de\u8c03\u5141\u8bb8\u4f60\u63a7\u5236\u64ad\u653e\u961f\u5217\u7684\u4fee\u6539\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u81ea\u5b9a\u4e49 <code>Player<\/code> \u884c\u4e3a<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u7531\u4e8e <code>MediaSession<\/code> \u4e0e <code>Player<\/code> \u63a5\u53e3\u89e3\u8026\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55\u5b9e\u73b0\u4e86 <code>Player<\/code> \u63a5\u53e3\u7684\u64ad\u653e\u5668\u3002\u867d\u7136 <code>ExoPlayer<\/code> \u662f\u6700\u5e38\u7528\u7684\uff0c\u4f46\u7406\u8bba\u4e0a\u4f60\u53ef\u4ee5\u5b9e\u73b0\u81ea\u5df1\u7684 <code>Player<\/code>\u3002<\/li>\n\n\n\n<li>\u5bf9\u4e8e <code>ExoPlayer<\/code> \u672c\u8eab\uff0c\u5b83\u63d0\u4f9b\u4e86\u5927\u91cf\u7684\u81ea\u5b9a\u4e49\u9009\u9879\uff1a\n<ul class=\"wp-block-list\">\n<li>\u81ea\u5b9a\u4e49 <code>LoadControl<\/code> \u6765\u6539\u53d8\u7f13\u51b2\u7b56\u7565\u3002<\/li>\n\n\n\n<li>\u81ea\u5b9a\u4e49 <code>RenderersFactory<\/code> \u6765\u4f7f\u7528\u81ea\u5b9a\u4e49\u7684\u97f3\u9891\/\u89c6\u9891\u6e32\u67d3\u5668\u3002<\/li>\n\n\n\n<li>\u6dfb\u52a0 <code>AnalyticsListener<\/code> \u6765\u63a5\u6536\u8be6\u7ec6\u7684\u64ad\u653e\u4e8b\u4ef6\u3002<\/li>\n\n\n\n<li>\u914d\u7f6e <code>DataSource.Factory<\/code> \u6765\u4ece\u5404\u79cd\u6765\u6e90\u52a0\u8f7d\u5a92\u4f53\uff08\u7f51\u7edc\u3001\u672c\u5730\u6587\u4ef6\u3001\u81ea\u5b9a\u4e49\u670d\u52a1\u5668\uff09\u3002<\/li>\n\n\n\n<li>\u5904\u7406 DRM (\u6570\u5b57\u7248\u6743\u7ba1\u7406)\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u901a\u77e5\u81ea\u5b9a\u4e49 (<code>MediaNotificationProvider<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5f53\u4f7f\u7528 <code>MediaSessionService<\/code> \u65f6\uff0c\u5b83\u4f7f\u7528\u4e00\u4e2a <code>MediaNotificationProvider<\/code> \u6765\u521b\u5efa\u548c\u66f4\u65b0\u5a92\u4f53\u901a\u77e5\u3002<\/li>\n\n\n\n<li>\u4f60\u53ef\u4ee5\u63d0\u4f9b\u81ea\u5df1\u7684 <code>MediaNotificationProvider<\/code> \u5b9e\u73b0\u6765\u5b8c\u5168\u63a7\u5236\u901a\u77e5\u7684\u5916\u89c2\u548c\u884c\u4e3a\uff1a\n<ul class=\"wp-block-list\">\n<li>\u81ea\u5b9a\u4e49\u901a\u77e5\u56fe\u6807\u3001\u989c\u8272\u3001\u5e03\u5c40\uff08\u90e8\u5206\u53d7\u7cfb\u7edf\u9650\u5236\uff09\u3002<\/li>\n\n\n\n<li>\u81ea\u5b9a\u4e49\u901a\u77e5\u4e2d\u7684\u64cd\u4f5c\u6309\u94ae\uff08\u4f8b\u5982\uff0c\u6dfb\u52a0\u201c\u559c\u6b22\u201d\u3001\u201c\u4e0d\u559c\u6b22\u201d\u6309\u94ae\uff09\u3002<\/li>\n\n\n\n<li>\u4fee\u6539\u901a\u77e5\u7684\u4f18\u5148\u7ea7\u548c\u6e20\u9053\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>DefaultMediaNotificationProvider<\/code> \u672c\u8eab\u4e5f\u63d0\u4f9b\u4e86\u4e00\u4e9b\u6784\u9020\u51fd\u6570\u53c2\u6570\u6765\u81ea\u5b9a\u4e49\u5e38\u7528\u9009\u9879\uff0c\u5982\u901a\u77e5\u56fe\u6807\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5a92\u4f53\u6d4f\u89c8 (<code>MediaLibraryService<\/code> \u548c <code>MediaLibrarySession.Callback<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u4f60\u5e0c\u671b\u4f60\u7684\u5e94\u7528\u5185\u5bb9\u80fd\u88ab\u5176\u4ed6\u5e94\u7528\uff08\u5982 Android Auto, Wear OS, Google Assistant\uff09\u6d4f\u89c8\u548c\u64ad\u653e\uff0c\u4f60\u9700\u8981\u4f7f\u7528 <code>MediaLibraryService<\/code>\u3002<\/li>\n\n\n\n<li>\u901a\u8fc7\u5b9e\u73b0 <code>MediaLibrarySession.Callback<\/code> \u7684\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\u5b9a\u4e49\u4f60\u7684\u5a92\u4f53\u5e93\u7ed3\u6784\uff1a\n<ul class=\"wp-block-list\">\n<li><code>onGetLibraryRoot()<\/code>: \u8fd4\u56de\u5a92\u4f53\u5e93\u7684\u6839\u8282\u70b9\u3002<\/li>\n\n\n\n<li><code>onGetChildren()<\/code>: \u8fd4\u56de\u6307\u5b9a\u7236\u5a92\u4f53\u9879\u4e0b\u7684\u5b50\u5a92\u4f53\u9879\u5217\u8868\uff08\u4f8b\u5982\uff0c\u4e13\u8f91\u4e0b\u7684\u6b4c\u66f2\u5217\u8868\uff0c\u64ad\u653e\u5217\u8868\u4e2d\u7684\u66f2\u76ee\uff09\u3002<\/li>\n\n\n\n<li><code>onGetItem()<\/code>: \u8fd4\u56de\u5355\u4e2a\u5a92\u4f53\u9879\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/li>\n\n\n\n<li><code>onSearch()<\/code>: (\u5982\u679c\u652f\u6301) \u5b9e\u73b0\u641c\u7d22\u903b\u8f91\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u8fd9\u5141\u8bb8\u4f60\u4ee5\u6811\u72b6\u7ed3\u6784\u6216\u81ea\u5b9a\u4e49\u7ed3\u6784\u7ec4\u7ec7\u4f60\u7684\u97f3\u4e50\u3001\u64ad\u5ba2\u7b49\u5185\u5bb9\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5e7f\u64ad\u81ea\u5b9a\u4e49\u5143\u6570\u636e\u548c\u64ad\u653e\u72b6\u6001<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u4f60\u53ef\u4ee5\u901a\u8fc7 <code>Player.setMediaItems()<\/code> \u8bbe\u7f6e\u5305\u542b\u4e30\u5bcc\u5143\u6570\u636e\uff08\u6807\u9898\u3001\u827a\u672f\u5bb6\u3001\u4e13\u8f91\u5c01\u9762 URI\u3001\u65f6\u957f\u7b49\uff09\u7684 <code>MediaItem<\/code>\u3002<code>MediaSession<\/code> \u4f1a\u5c06\u8fd9\u4e9b\u4fe1\u606f\u5e7f\u64ad\u51fa\u53bb\u3002<\/li>\n\n\n\n<li>\u901a\u8fc7 <code>MediaSession.setCustomLayout()<\/code>\uff0c\u4f60\u53ef\u4ee5\u4e3a\u8fde\u63a5\u7684\u63a7\u5236\u5668\uff08\u5982 Android Auto\uff09\u63d0\u4f9b\u4e00\u7ec4\u81ea\u5b9a\u4e49\u64cd\u4f5c\u6309\u94ae\u7684\u5e03\u5c40\u3002<\/li>\n\n\n\n<li><code>MediaSession.setSessionExtras()<\/code> \u5141\u8bb8\u4f60\u9644\u52a0\u4e00\u4e2a <code>Bundle<\/code> \u7684\u989d\u5916\u6570\u636e\u5230 <code>MediaSession<\/code>\uff0c\u4f9b <code>MediaController<\/code> \u8bfb\u53d6\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u53ef\u7528\u547d\u4ee4 (Available Commands)<\/strong>:\n<ul class=\"wp-block-list\">\n<li><code>MediaSession<\/code> \u7ef4\u62a4\u4e00\u7ec4\u5f53\u524d\u53ef\u7528\u7684\u64ad\u653e\u547d\u4ee4\uff08<code>Player.Commands<\/code>\uff09\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5f53\u524d\u6ca1\u6709\u4e0b\u4e00\u9996\u6b4c\u66f2\uff0c\u5219 <code>COMMAND_SEEK_TO_NEXT_MEDIA_ITEM<\/code> \u53ef\u80fd\u4e0d\u53ef\u7528\u3002<\/li>\n\n\n\n<li>\u4f60\u53ef\u4ee5\u901a\u8fc7 <code>MediaSession.Builder.setAvailableCommandsProvider()<\/code> \u6216\u5728 <code>MediaSession.Callback<\/code> \u4e2d\u52a8\u6001\u4fee\u6539\u8fd9\u4e9b\u53ef\u7528\u547d\u4ee4\uff0c\u4ee5\u7cbe\u786e\u63a7\u5236\u8fdc\u7a0b\u63a7\u5236\u5668\u53ef\u4ee5\u6267\u884c\u54ea\u4e9b\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li><code>Player<\/code> \u672c\u8eab\u4e5f\u4f1a\u6839\u636e\u5176\u72b6\u6001\uff08\u4f8b\u5982\uff0c\u662f\u5426\u6709\u53ef\u5bfb\u627e\u7684\u5185\u5bb9\uff09\u66f4\u65b0\u5176\u53ef\u7528\u547d\u4ee4\uff0c<code>MediaSession<\/code> \u4f1a\u53cd\u6620\u8fd9\u4e9b\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u8fde\u63a5\u7279\u5b9a\u63a7\u5236\u5668 (<code>MediaSession.Callback.onConnect<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5f53\u4e00\u4e2a\u65b0\u7684 <code>MediaController<\/code> \u5c1d\u8bd5\u8fde\u63a5\u5230\u4f60\u7684 <code>MediaSession<\/code> \u65f6\uff0c<code>onConnect<\/code> \u56de\u8c03\u4f1a\u88ab\u8c03\u7528\u3002<\/li>\n\n\n\n<li>\u4f60\u53ef\u4ee5\u5728\u8fd9\u91cc\u51b3\u5b9a\u662f\u5426\u63a5\u53d7\u8fde\u63a5\uff08\u4f8b\u5982\uff0c\u57fa\u4e8e\u5305\u540d\u8fdb\u884c\u767d\u540d\u5355\/\u9ed1\u540d\u5355\u9a8c\u8bc1\uff09\uff0c\u6216\u8005\u4e3a\u7279\u5b9a\u7684\u63a7\u5236\u5668\u914d\u7f6e\u4e0d\u540c\u7684\u53ef\u7528\u547d\u4ee4\u6216\u81ea\u5b9a\u4e49\u5e03\u5c40\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u9519\u8bef\u5904\u7406\u548c\u62a5\u544a<\/strong>:\n<ul class=\"wp-block-list\">\n<li><code>Player.Listener.onPlayerError<\/code> \u53ef\u4ee5\u7528\u6765\u76d1\u542c\u64ad\u653e\u5668\u9519\u8bef\u3002<\/li>\n\n\n\n<li>\u4f60\u53ef\u4ee5\u5728 <code>MediaSession.Callback<\/code> \u4e2d\u5904\u7406\u8fd9\u4e9b\u9519\u8bef\uff0c\u4f8b\u5982\u5411\u7528\u6237\u663e\u793a\u53cb\u597d\u7684\u9519\u8bef\u6d88\u606f\uff0c\u6216\u8005\u5c1d\u8bd5\u6062\u590d\u64ad\u653e\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u901a\u8fc7\u7ec4\u5408\u8fd9\u4e9b\u81ea\u5b9a\u4e49\u70b9\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6784\u5efa\u51fa\u529f\u80fd\u4e30\u5bcc\u4e14\u9ad8\u5ea6\u5b9a\u5236\u5316\u7684\u5a92\u4f53\u64ad\u653e\u4f53\u9a8c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_%E5%BC%80%E5%8F%91%E9%9F%B3%E4%B9%90_App_%E4%BC%9A%E7%94%A8%E5%88%B0%E7%9A%84%E6%A1%86%E6%9E%B6%E8%83%BD%E5%8A%9B_Application_in_a_Music_App\"><\/span>4. \u5f00\u53d1\u97f3\u4e50 App \u4f1a\u7528\u5230\u7684\u6846\u67b6\u80fd\u529b (Application in a Music App)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5bf9\u4e8e\u5f00\u53d1\u4e00\u6b3e\u97f3\u4e50 App\uff0c\u4f60\u4f1a\u5e7f\u6cdb\u5730\u4f7f\u7528 Media3 MediaSession \u6846\u67b6\u7684\u591a\u79cd\u80fd\u529b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6838\u5fc3\u64ad\u653e\u63a7\u5236 (<code>Player<\/code> + <code>MediaSession<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong><code>ExoPlayer<\/code><\/strong>: \u7528\u4e8e\u5b9e\u9645\u7684\u97f3\u4e50\u6587\u4ef6\uff08MP3, AAC, FLAC, Ogg Vorbis \u7b49\uff09\u7684\u89e3\u7801\u548c\u64ad\u653e\uff0c\u652f\u6301\u7f51\u7edc\u6d41\uff08HTTP\/HTTPS, HLS, DASH\uff09\u3001\u672c\u5730\u6587\u4ef6\u3002<\/li>\n\n\n\n<li><strong><code>MediaSession<\/code><\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5c06 <code>ExoPlayer<\/code> \u5b9e\u4f8b\u5173\u8054\uff0c\u4ee5\u58f0\u660e\u64ad\u653e\u72b6\u6001\uff08\u6b63\u5728\u64ad\u653e\u3001\u6682\u505c\u3001\u7f13\u51b2\u3001\u5f53\u524d\u6b4c\u66f2\u3001\u8fdb\u5ea6\uff09\u3002<\/li>\n\n\n\n<li>\u63a5\u6536\u6765\u81ea\u7cfb\u7edf\uff08\u901a\u77e5\u680f\u3001\u9501\u5c4f\u3001\u84dd\u7259\u8033\u673a\u6309\u94ae\u3001Android Auto\u3001Wear OS\u3001Google Assistant\uff09\u7684\u64ad\u653e\/\u6682\u505c\/\u4e0a\u4e00\u9996\/\u4e0b\u4e00\u9996\/\u5feb\u8fdb\/\u5feb\u9000\u547d\u4ee4\uff0c\u5e76\u5c06\u5b83\u4eec\u8f6c\u53d1\u7ed9 <code>ExoPlayer<\/code>\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u540e\u53f0\u64ad\u653e (<code>MediaSessionService<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>\u81f3\u5173\u91cd\u8981<\/strong>: \u97f3\u4e50\u901a\u5e38\u9700\u8981\u5728\u5e94\u7528 UI \u4e0d\u53ef\u89c1\u65f6\u7ee7\u7eed\u64ad\u653e\u3002<code>MediaSessionService<\/code> \u786e\u4fdd\u64ad\u653e\u53ef\u4ee5\u5728\u540e\u53f0\u53ef\u9760\u8fd0\u884c\uff0c\u5e76\u81ea\u52a8\u7ba1\u7406\u524d\u53f0\u670d\u52a1\u72b6\u6001\u4ee5\u9632\u6b62\u88ab\u7cfb\u7edf\u7ec8\u6b62\u3002<\/li>\n\n\n\n<li>\u5b83\u8fd8\u4f1a\u5904\u7406\u5a92\u4f53\u6309\u94ae\u4e8b\u4ef6\u7684\u63a5\u6536\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5a92\u4f53\u5143\u6570\u636e\u548c\u5c01\u9762 (<code>MediaItem<\/code> \u548c <code>MediaMetadata<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u4e3a\u6bcf\u9996\u6b4c\u66f2\u521b\u5efa <code>MediaItem<\/code>\uff0c\u5e76\u901a\u8fc7 <code>MediaMetadata.Builder<\/code> \u8bbe\u7f6e\u4e30\u5bcc\u7684\u5143\u6570\u636e\uff1a\n<ul class=\"wp-block-list\">\n<li><code>setTitle()<\/code>: \u6b4c\u66f2\u540d\u79f0<\/li>\n\n\n\n<li><code>setArtist()<\/code>: \u827a\u672f\u5bb6<\/li>\n\n\n\n<li><code>setAlbumTitle()<\/code>: \u4e13\u8f91\u540d\u79f0<\/li>\n\n\n\n<li><code>setAlbumArtist()<\/code>: \u4e13\u8f91\u827a\u672f\u5bb6<\/li>\n\n\n\n<li><code>setArtworkUri()<\/code> \/ <code>setArtworkData()<\/code>: \u4e13\u8f91\u5c01\u9762\uff08URI \u6216 byte array\uff09<\/li>\n\n\n\n<li><code>setTrackNumber()<\/code>: \u97f3\u8f68\u53f7<\/li>\n\n\n\n<li><code>setTotalTrackCount()<\/code>: \u4e13\u8f91\u603b\u97f3\u8f68\u6570<\/li>\n\n\n\n<li><code>setReleaseDate()<\/code>: \u53d1\u884c\u65e5\u671f<\/li>\n\n\n\n<li><code>setGenre()<\/code>: \u97f3\u4e50\u6d41\u6d3e<\/li>\n\n\n\n<li><code>setUserRating()<\/code> \/ <code>setOverallRating()<\/code>: \u7528\u6237\u8bc4\u5206<\/li>\n\n\n\n<li><code>setExtras()<\/code>: \u5b58\u50a8\u5176\u4ed6\u81ea\u5b9a\u4e49\u4fe1\u606f\uff0c\u5982\u6b4c\u8bcd URI\u3001\u97f3\u8d28\u7b49\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>MediaSession<\/code> \u4f1a\u5c06\u8fd9\u4e9b\u5143\u6570\u636e\u5e7f\u64ad\u7ed9\u7cfb\u7edf\uff0c\u7528\u4e8e\u5728\u901a\u77e5\u3001\u9501\u5c4f\u3001\u84dd\u7259\u8bbe\u5907\u4e0a\u663e\u793a\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u64ad\u653e\u961f\u5217\u7ba1\u7406 (<code>Player<\/code> \u63a5\u53e3\u65b9\u6cd5, <code>MediaSession.Callback<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 <code>player.addMediaItem(s)<\/code>, <code>player.removeMediaItem(s)<\/code>, <code>player.moveMediaItem(s)<\/code> \u7b49\u65b9\u6cd5\u7ba1\u7406\u64ad\u653e\u961f\u5217\u3002<\/li>\n\n\n\n<li>\u7528\u6237\u53ef\u80fd\u5e0c\u671b\u5bf9\u64ad\u653e\u5217\u8868\u8fdb\u884c\u6392\u5e8f\u3001\u6dfb\u52a0\u6b4c\u66f2\u3001\u79fb\u9664\u6b4c\u66f2\u3002\u8fd9\u4e9b\u64cd\u4f5c\u4f1a\u66f4\u65b0 <code>Player<\/code> \u7684\u64ad\u653e\u5217\u8868\uff0c<code>MediaSession<\/code> \u4f1a\u53cd\u6620\u8fd9\u4e9b\u53d8\u5316\u3002<\/li>\n\n\n\n<li>\u5b9e\u73b0 <code>MediaSession.Callback<\/code> \u4e2d\u7684 <code>onAddMediaItems<\/code>, <code>onSetMediaItems<\/code> \u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8ba9\u4f60\u5728\u8fd9\u4e9b\u64cd\u4f5c\u53d1\u751f\u65f6\u6267\u884c\u989d\u5916\u903b\u8f91\uff08\u5982\u4fdd\u5b58\u64ad\u653e\u5217\u8868\u72b6\u6001\uff09\u3002<\/li>\n\n\n\n<li>\u652f\u6301\u968f\u673a\u64ad\u653e (<code>player.setShuffleModeEnabled(true\/false)<\/code>) \u548c\u91cd\u590d\u64ad\u653e (<code>player.setRepeatMode(Player.REPEAT_MODE_OFF\/ONE\/ALL)<\/code>).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5a92\u4f53\u901a\u77e5 (<code>MediaSessionService<\/code> \u6216 <code>PlayerNotificationManager<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li><code>MediaSessionService<\/code> \u4f1a\u81ea\u52a8\u521b\u5efa\u548c\u66f4\u65b0\u4e00\u4e2a\u5305\u542b\u5f53\u524d\u6b4c\u66f2\u4fe1\u606f\u548c\u64ad\u653e\u63a7\u4ef6\u7684\u901a\u77e5\u3002<\/li>\n\n\n\n<li><strong>\u81ea\u5b9a\u4e49\u901a\u77e5<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u901a\u8fc7 <code>DefaultMediaNotificationProvider.Builder<\/code> \u6216\u81ea\u5b9a\u4e49 <code>MediaNotificationProvider<\/code> \u6765\u8bbe\u7f6e\u5e94\u7528\u56fe\u6807\u3001\u901a\u77e5\u989c\u8272\u3002<\/li>\n\n\n\n<li>\u6dfb\u52a0\u81ea\u5b9a\u4e49\u64cd\u4f5c\u6309\u94ae\uff0c\u5982\u201c\u559c\u6b22\u201d\u3001\u201c\u6dfb\u52a0\u5230\u64ad\u653e\u5217\u8868\u201d\u3001\u201c\u67e5\u770b\u6b4c\u8bcd\u201d\u7b49\uff08\u901a\u8fc7 <code>MediaSession.Callback.onCustomCommand<\/code> \u548c <code>MediaNotificationProvider.getActions()<\/code>)\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5a92\u4f53\u6d4f\u89c8 (<code>MediaLibraryService<\/code> \u548c <code>MediaLibrarySession.Callback<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>\u975e\u5e38\u63a8\u8350<\/strong>: \u5141\u8bb8\u7528\u6237\u901a\u8fc7 Android Auto\u3001Wear OS\u3001Google Assistant \u6216\u5176\u4ed6\u5a92\u4f53\u6d4f\u89c8\u5e94\u7528\u6765\u6d4f\u89c8\u548c\u64ad\u653e\u4f60\u7684\u97f3\u4e50\u5e93\u3002<\/li>\n\n\n\n<li>\u5b9e\u73b0 <code>MediaLibrarySession.Callback<\/code>\uff1a\n<ul class=\"wp-block-list\">\n<li><code>onGetLibraryRoot()<\/code>: \u8fd4\u56de\u6839\u76ee\u5f55\uff08\u4f8b\u5982\uff0c&#8221;\u6211\u7684\u97f3\u4e50\u5e93&#8221;\uff09\u3002<\/li>\n\n\n\n<li><code>onGetChildren()<\/code>:\n<ul class=\"wp-block-list\">\n<li>\u8fd4\u56de\u4e0d\u540c\u5206\u7c7b\u7684\u5165\u53e3\uff0c\u5982\u201c\u4e13\u8f91\u201d\u3001\u201c\u827a\u672f\u5bb6\u201d\u3001\u201c\u64ad\u653e\u5217\u8868\u201d\u3001\u201c\u6d41\u6d3e\u201d\u3001\u201c\u6240\u6709\u6b4c\u66f2\u201d\u3002<\/li>\n\n\n\n<li>\u5bf9\u4e8e\u201c\u4e13\u8f91\u201d\u8282\u70b9\uff0c\u8fd4\u56de\u8be5\u4e13\u8f91\u4e0b\u7684\u6240\u6709\u6b4c\u66f2\u3002<\/li>\n\n\n\n<li>\u5bf9\u4e8e\u201c\u827a\u672f\u5bb6\u201d\u8282\u70b9\uff0c\u8fd4\u56de\u8be5\u827a\u672f\u5bb6\u7684\u6240\u6709\u4e13\u8f91\u6216\u6b4c\u66f2\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>onGetItem()<\/code>: \u8fd4\u56de\u7279\u5b9a\u6b4c\u66f2\u7684 <code>MediaItem<\/code>\uff08\u5305\u542b\u6240\u6709\u5143\u6570\u636e\uff09\u3002<\/li>\n\n\n\n<li><code>(\u53ef\u9009) onSearch()<\/code>: \u5b9e\u73b0\u97f3\u4e50\u5e93\u5185\u641c\u7d22\u529f\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u8fd9\u4f7f\u5f97\u4f60\u7684\u97f3\u4e50 App \u80fd\u591f\u5f88\u597d\u5730\u878d\u5165 Android \u751f\u6001\u7cfb\u7edf\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u97f3\u9891\u7126\u70b9\u7ba1\u7406<\/strong>:\n<ul class=\"wp-block-list\">\n<li><code>ExoPlayer<\/code> \u53ef\u4ee5\u901a\u8fc7 <code>player.setAudioAttributes(audioAttributes, true \/* handleAudioFocus *\/)<\/code> \u81ea\u52a8\u5904\u7406\u97f3\u9891\u7126\u70b9\u3002<\/li>\n\n\n\n<li>\u5f53\u5176\u4ed6\u5e94\u7528\u8bf7\u6c42\u97f3\u9891\u7126\u70b9\u65f6\uff08\u4f8b\u5982\uff0c\u5bfc\u822a\u5e94\u7528\u5f00\u59cb\u64ad\u62a5\u65b9\u5411\uff09\uff0c\u4f60\u7684\u97f3\u4e50\u64ad\u653e\u4f1a\u81ea\u52a8\u6682\u505c\u6216\u964d\u4f4e\u97f3\u91cf\uff08ducking\uff09\u3002\u5f53\u7126\u70b9\u8fd4\u56de\u65f6\uff0c\u64ad\u653e\u4f1a\u81ea\u52a8\u6062\u590d\u3002<\/li>\n\n\n\n<li>\u6b63\u786e\u5904\u7406\u97f3\u9891\u7126\u70b9\u5bf9\u4e8e\u826f\u597d\u7684\u7528\u6237\u4f53\u9a8c\u81f3\u5173\u91cd\u8981\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5a92\u4f53\u6309\u94ae\u54cd\u5e94 (\u8033\u673a\u3001\u84dd\u7259\u8bbe\u5907)<\/strong>:\n<ul class=\"wp-block-list\">\n<li><code>MediaSessionService<\/code> \u4f1a\u81ea\u52a8\u6ce8\u518c\u4e00\u4e2a\u5a92\u4f53\u6309\u94ae\u63a5\u6536\u5668\u3002\u5f53\u7528\u6237\u6309\u4e0b\u8033\u673a\u6216\u84dd\u7259\u8bbe\u5907\u4e0a\u7684\u64ad\u653e\/\u6682\u505c\/\u4e0b\u4e00\u9996\/\u4e0a\u4e00\u9996\u6309\u94ae\u65f6\uff0c\u8fd9\u4e9b\u4e8b\u4ef6\u4f1a\u88ab\u8def\u7531\u5230\u4f60\u7684 <code>MediaSession<\/code>\uff0c\u8fdb\u800c\u63a7\u5236 <code>ExoPlayer<\/code>\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u9501\u5c4f\u63a7\u4ef6<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5f53 <code>MediaSession<\/code> \u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\u5e76\u6b63\u5728\u64ad\u653e\u5a92\u4f53\u65f6\uff0cAndroid \u7cfb\u7edf\u4f1a\u5728\u9501\u5c4f\u754c\u9762\u663e\u793a\u5a92\u4f53\u63a7\u4ef6\uff08\u6b4c\u66f2\u4fe1\u606f\u3001\u5c01\u9762\u3001\u64ad\u653e\u63a7\u5236\u6309\u94ae\uff09\u3002\u8fd9\u662f\u7531\u7cfb\u7edf\u81ea\u52a8\u5904\u7406\u7684\uff0c\u53ea\u8981\u4f60\u7684 <code>MediaSession<\/code> \u6b63\u786e\u53d1\u5e03\u4e86\u72b6\u6001\u548c\u5143\u6570\u636e\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u81ea\u5b9a\u4e49\u547d\u4ee4\u548c\u64cd\u4f5c (<code>MediaSession.Callback.onCustomCommand<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>\u201c\u559c\u6b22\/\u4e0d\u559c\u6b22\u201d\u6b4c\u66f2<\/strong>: \u53d1\u9001\u81ea\u5b9a\u4e49\u547d\u4ee4\uff0c\u5728 <code>Callback<\/code> \u4e2d\u5904\u7406\uff0c\u66f4\u65b0\u6b4c\u66f2\u7684\u559c\u597d\u72b6\u6001\uff0c\u5e76\u53ef\u80fd\u66f4\u65b0 UI \u548c\u670d\u52a1\u5668\u6570\u636e\u3002<\/li>\n\n\n\n<li><strong>\u6dfb\u52a0\u5230\u64ad\u653e\u5217\u8868<\/strong>: \u81ea\u5b9a\u4e49\u547d\u4ee4\uff0c\u5728 <code>Callback<\/code> \u4e2d\u5f39\u51fa\u5bf9\u8bdd\u6846\u8ba9\u7528\u6237\u9009\u62e9\u64ad\u653e\u5217\u8868\uff0c\u6216\u76f4\u63a5\u6dfb\u52a0\u5230\u9ed8\u8ba4\u5217\u8868\u3002<\/li>\n\n\n\n<li><strong>\u8c03\u6574\u64ad\u653e\u901f\u5ea6\/\u97f3\u9ad8<\/strong>: \u867d\u7136 <code>ExoPlayer<\/code> \u652f\u6301 <code>setPlaybackParameters<\/code>\uff0c\u4f46\u4f60\u53ef\u80fd\u5e0c\u671b\u901a\u8fc7\u81ea\u5b9a\u4e49\u547d\u4ee4\u63d0\u4f9b\u9884\u8bbe\u7684\u901f\u5ea6\u9009\u9879\u3002<\/li>\n\n\n\n<li><strong>\u67e5\u770b\u6b4c\u8bcd<\/strong>: \u81ea\u5b9a\u4e49\u547d\u4ee4\uff0c\u89e6\u53d1\u5728 UI \u4e2d\u663e\u793a\u6b4c\u8bcd\u7684\u903b\u8f91\u3002<\/li>\n\n\n\n<li><strong>\u4e0b\u8f7d\u6b4c\u66f2<\/strong>: \u81ea\u5b9a\u4e49\u547d\u4ee4\uff0c\u89e6\u53d1\u6b4c\u66f2\u4e0b\u8f7d\u903b\u8f91\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u9519\u8bef\u5904\u7406\u548c\u62a5\u544a<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u76d1\u542c <code>Player.Listener.onPlayerError<\/code> \u6765\u6355\u83b7\u64ad\u653e\u9519\u8bef\uff08\u5982\u7f51\u7edc\u95ee\u9898\u3001\u6587\u4ef6\u635f\u574f\u3001\u89e3\u7801\u9519\u8bef\uff09\u3002<\/li>\n\n\n\n<li>\u5728 <code>MediaSession.Callback<\/code> \u6216 <code>Player.Listener<\/code> \u4e2d\u5904\u7406\u8fd9\u4e9b\u9519\u8bef\uff0c\u4f8b\u5982\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5411\u7528\u6237\u663e\u793a\u53cb\u597d\u7684\u9519\u8bef\u6d88\u606f\u3002<\/li>\n\n\n\n<li>\u5c1d\u8bd5\u91cd\u65b0\u8fde\u63a5\u6216\u64ad\u653e\u4e0b\u4e00\u9996\u6b4c\u66f2\u3002<\/li>\n\n\n\n<li>\u8bb0\u5f55\u9519\u8bef\u4ee5\u4f9b\u5206\u6790\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u4e0e UI (Activity\/Fragment) \u7684\u4ea4\u4e92 (<code>MediaController<\/code>)<\/strong>:\n<ul class=\"wp-block-list\">\n<li>UI \u7ec4\u4ef6\u4f7f\u7528 <code>MediaController<\/code> \u8fde\u63a5\u5230 <code>MediaSessionService<\/code> \u4e2d\u7684 <code>MediaSession<\/code>\u3002<\/li>\n\n\n\n<li><strong>\u76d1\u542c\u72b6\u6001<\/strong>: \u76d1\u542c <code>Player.Listener<\/code> \u4e8b\u4ef6\uff08\u901a\u8fc7 <code>MediaController<\/code>\uff09\u6765\u66f4\u65b0 UI \u4e0a\u7684\u64ad\u653e\u8fdb\u5ea6\u6761\u3001\u6b4c\u66f2\u4fe1\u606f\u3001\u64ad\u653e\/\u6682\u505c\u6309\u94ae\u72b6\u6001\u3001\u5c01\u9762\u7b49\u3002<\/li>\n\n\n\n<li><strong>\u53d1\u9001\u547d\u4ee4<\/strong>: UI \u4e0a\u7684\u6309\u94ae\uff08\u64ad\u653e\u3001\u6682\u505c\u3001\u4e0b\u4e00\u9996\u3001\u62d6\u52a8\u8fdb\u5ea6\u6761\uff09\u901a\u8fc7 <code>MediaController<\/code> \u5411 <code>MediaSession<\/code> \u53d1\u9001\u547d\u4ee4\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6700\u8fd1\u64ad\u653e\/\u64ad\u653e\u5386\u53f2<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u5728 <code>MediaSession.Callback<\/code> \u7684 <code>onPlay<\/code> \u6216 <code>Player.Listener.onMediaItemTransition<\/code> \u4e2d\u8bb0\u5f55\u64ad\u653e\u7684\u6b4c\u66f2\uff0c\u7528\u4e8e\u5b9e\u73b0\u201c\u6700\u8fd1\u64ad\u653e\u201d\u529f\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Android Auto \/ Wear OS \u96c6\u6210<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u901a\u8fc7\u6b63\u786e\u5b9e\u73b0 <code>MediaLibraryService<\/code>\uff0c\u4f60\u7684\u97f3\u4e50\u5e94\u7528\u53ef\u4ee5\u65e0\u7f1d\u5730\u5728 Android Auto \u548c Wear OS \u8bbe\u5907\u4e0a\u63d0\u4f9b\u6d4f\u89c8\u548c\u64ad\u653e\u4f53\u9a8c\u3002<\/li>\n\n\n\n<li><code>MediaSession<\/code> \u8fd8\u4f1a\u5c06\u64ad\u653e\u72b6\u6001\u548c\u5143\u6570\u636e\u540c\u6b65\u5230\u8fd9\u4e9b\u8bbe\u5907\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u901a\u8fc7\u6709\u6548\u5730\u5229\u7528\u8fd9\u4e9b Media3 MediaSession \u6846\u67b6\u7684\u80fd\u529b\uff0c\u4f60\u53ef\u4ee5\u6784\u5efa\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u3001\u7528\u6237\u4f53\u9a8c\u826f\u597d\u4e14\u4e0e Android \u751f\u6001\u7cfb\u7edf\u6df1\u5ea6\u96c6\u6210\u7684\u97f3\u4e50\u5e94\u7528\u3002\u8bb0\u4f4f\uff0c<code>MediaSessionService<\/code> \u548c <code>MediaLibraryService<\/code> (\u5982\u679c\u9700\u8981\u6d4f\u89c8) \u662f\u73b0\u4ee3\u97f3\u4e50\u5e94\u7528\u7684\u5173\u952e\u7ec4\u4ef6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MediaSession \u662f\u6784\u5efa\u5a92\u4f53\u5e94\u7528\uff08\u5c24\u5176\u662f\u90a3\u4e9b\u9700\u8981\u5728\u540e\u53f0\u64ad\u653e\u3001\u54cd\u5e94\u5a92\u4f53\u6309\u94ae\u3001\u4ee5\u53ca\u4e0e\u5176\u4ed6\u5e94\u7528\u548c\u7cfb\u7edf\u7ec4\u4ef6\u4ea4\u4e92\u7684\u5e94\u7528\uff09\u7684\u6838\u5fc3\u7ec4\u4ef6\u3002 1. \u6846\u67b6\u8bbe\u8ba1 (Framework Design) Media3 \u4e2d\u7684 MediaSession \u6846\u67b6\u662f Jetpack Media3 \u5e93\u7684\u4e00\u90e8\u5206\uff0c\u5b83\u662f\u5728\u65e7\u7248 android.media.session.MediaSession (API 21+) \u548c androidx.media.session.MediaSessionCompat \u7684\u57fa\u7840\u4e0a\u8fdb\u884c\u4e86\u73b0\u4ee3\u5316\u548c\u7b80\u5316\u7684\u8bbe\u8ba1\u3002\u5176\u6838\u5fc3\u8bbe\u8ba1\u76ee\u6807\u662f\uff1a \u6838\u5fc3\u7ec4\u4ef6\u548c\u6982\u5ff5\uff1a \u6570\u636e\u6d41\u548c\u4ea4\u4e92\u6a21\u578b\uff1a \u8fd9\u79cd\u8bbe\u8ba1\u4f7f\u5f97\u5a92\u4f53\u64ad\u653e\u903b\u8f91\u4e0e UI \u548c\u7cfb\u7edf\u4ea4\u4e92\u6e05\u6670\u5206\u79bb\uff0c\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6d4b\u8bd5\u6027\u3002 2. \u6846\u67b6\u4f7f\u7528 (Framework Usage) \u4f7f\u7528 Media3 \u4e2d\u7684 MediaSession \u6846\u67b6\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u6b65\u9aa4\uff1a \u6b65\u9aa4 1: \u6dfb\u52a0\u4f9d\u8d56 \u5728\u4f60\u7684 build.gradle (Module: app) \u6587\u4ef6\u4e2d\u6dfb\u52a0 Media3 \u7684\u76f8\u5173\u4f9d\u8d56\uff1a Gradle \u8bf7\u6ce8\u610f\u68c0\u67e5\u5e76\u4f7f\u7528\u6700\u65b0\u7684 Media3 \u7248\u672c\u3002 \u6b65\u9aa4 2: \u521b\u5efa Player \u5b9e\u4f8b \u901a\u5e38\u4f7f\u7528 ExoPlayer\uff1a Java \u6b65\u9aa4 3: \u521b\u5efa MediaSession Java \u6b65\u9aa4 4: (\u63a8\u8350) \u4f7f\u7528 MediaSessionService \u8fdb\u884c\u540e\u53f0\u64ad\u653e \u8fd9\u662f\u7ba1\u7406\u540e\u53f0\u64ad\u653e\u3001\u5a92\u4f53\u6309\u94ae\u548c\u901a\u77e5\u7684\u63a8\u8350\u65b9\u5f0f\u3002 Java XML foregroundServiceType=&#8221;mediaPlayback&#8221; \u5bf9\u4e8e Android 9 (API 28) \u53ca\u66f4\u9ad8\u7248\u672c\u662f\u5fc5\u9700\u7684\u3002 exported=&#8221;true&#8221; \u5141\u8bb8\u5176\u4ed6\u5e94\u7528\u8fde\u63a5\u5230\u4f60\u7684\u670d\u52a1\u3002 \u6b65\u9aa4 5: \u7ba1\u7406 Player \u548c MediaSession \u7684\u751f\u547d\u5468\u671f \u6b65\u9aa4 6: \u52a0\u8f7d\u548c\u64ad\u653e\u5a92\u4f53 \u4f7f\u7528 Player \u63a5\u53e3\u7684\u65b9\u6cd5\u6765\u63a7\u5236\u64ad\u653e\uff1a Java \u6b65\u9aa4 7: (\u53ef\u9009) \u4ece Activity\/Fragment \u63a7\u5236 MediaSessionService \u5982\u679c\u4f60\u7684 MediaSession \u6258\u7ba1\u5728 MediaSessionService \u4e2d\uff0c\u4f60\u7684 UI (Activity\/Fragment) \u53ef\u4ee5\u4f7f\u7528 MediaController \u6765\u4e0e\u4e4b\u901a\u4fe1\u3002 Java \u6b65\u9aa4 8: \u5904\u7406\u901a\u77e5 \u5f53\u4f60\u4f7f\u7528 MediaSessionService \u65f6\uff0c\u5b83\u4f1a\u81ea\u52a8\u4e3a\u4f60\u5904\u7406\u5a92\u4f53\u901a\u77e5\u7684\u521b\u5efa\u548c\u66f4\u65b0\u3002\u901a\u77e5\u4f1a\u663e\u793a\u5f53\u524d\u7684\u5a92\u4f53\u5143\u6570\u636e\u548c\u64ad\u653e\u63a7\u4ef6\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7 MediaSessionService.setMediaNotificationProvider() \u6765\u81ea\u5b9a\u4e49\u901a\u77e5\u7684\u5916\u89c2\u548c\u884c\u4e3a\uff0c\u6216\u8005\u76f4\u63a5\u8ba9\u5176\u4f7f\u7528\u9ed8\u8ba4\u63d0\u4f9b\u8005\u3002 \u5982\u679c\u672a\u4f7f\u7528 MediaSessionService\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u4f7f\u7528 PlayerNotificationManager (\u6765\u81ea androidx.media3:media3-ui \u5305) \u624b\u52a8\u521b\u5efa\u548c\u7ba1\u7406\u901a\u77e5\uff0c\u5e76\u5c06\u5176\u4e0e MediaSession \u540c\u6b65\u3002 3. \u6846\u67b6\u63d0\u4f9b\u7684\u81ea\u5b9a\u4e49\u80fd\u529b (Customization Capabilities) Media3 MediaSession 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