{"id":1980,"date":"2025-05-08T18:00:07","date_gmt":"2025-05-08T10:00:07","guid":{"rendered":"https:\/\/www.wunen.com\/index.php\/2025\/05\/08\/android-%e5%8a%a8%e6%80%81%e5%a3%81%e7%ba%b8%e7%9a%84%e5%ae%9e%e7%8e%b0\/"},"modified":"2025-05-08T18:00:07","modified_gmt":"2025-05-08T10:00:07","slug":"android-%e5%8a%a8%e6%80%81%e5%a3%81%e7%ba%b8%e7%9a%84%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"http:\/\/www.wunen.com\/index.php\/2025\/05\/08\/android-%e5%8a%a8%e6%80%81%e5%a3%81%e7%ba%b8%e7%9a%84%e5%ae%9e%e7%8e%b0\/","title":{"rendered":"Android-\u52a8\u6001\u58c1\u7eb8\u7684\u5b9e\u73b0"},"content":{"rendered":"<div class=\"article_content clearfix\" id=\"article_content\">\n <link href=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/mdeditor\/css\/editerView\/kdoc_html_views-1a98987dfd.css\" rel=\"stylesheet\"\/>\n <link href=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/mdeditor\/css\/editerView\/ck_htmledit_views-704d5b9767.css\" rel=\"stylesheet\"\/>\n<div class=\"htmledit_views atom-one-dark\" id=\"content_views\">\n<p>\n   <strong><br \/>\n    \u524d\u8a00:<br \/>\n   <\/strong>\n  <\/p>\n<p>\n   \u6700\u8fd1\u9047\u5230\u4e86\u51e0\u4e2a\u5f88\u6076\u5fc3\u7684\u95ee\u9898\uff0c\u7b2c\u4e00\u4e2a\u662f\u624b\u673a\u5f55\u5236\u89c6\u9891\u53d1\u73b0\u8d44\u6e90\u4e0d\u591f\u7528\uff0c\u7b2c\u4e8c\u4e2a\u662f\u624b\u673a\u64ad\u653e\u89c6\u9891\u53d1\u73b0\u5361\u987f\u3002\u627e\u4e86\u534a\u5929\u4e24\u4e2a\u95ee\u9898\u7684root cause\u90fd\u662f\u624b\u673a\u52a8\u6001\u58c1\u7eb8\u3002\u6211\u4eec\u624b\u673a\u52a8\u6001\u58c1\u7eb8\u7684\u5b9e\u73b0\u662f\u65e0\u8bba\u5f53\u524d\u58c1\u7eb8\u662f\u5426\u5904\u4e8e\u524d\u53f0\uff0cvideo instance\u90fd\u662f\u4e00\u76f4\u6d3b\u8dc3\u7684\u3002\u4e0d\u5f97\u4e0d\u8bf4\uff0c\u8fd9\u4e2a\u8bbe\u8ba1\u771f\u7684\u5f88\u8fc7\u5206\uff0c\u4e00\u662f\u6d6a\u8d39\u8d44\u6e90\uff0c\u4e8c\u662f\u4f1a\u5f15\u8d77\u5f88\u591avideo\u7684\u95ee\u9898\u3002\u6240\u4ee5\u4eca\u5929\u5c31\u4e86\u89e3\u4e0b\u52a8\u6001\u58c1\u7eb8\u7684\u5177\u4f53\u5b9e\u73b0\u8fc7\u7a0b\uff0c\u770b\u770b\u662f\u5426\u53ef\u4ee5\u4f18\u5316\u8fd9\u4e2a\u8bbe\u8ba1\u2026\u2026\n  <\/p>\n<p>\n   <strong><br \/>\n    Android\u58c1\u7eb8\u7684\u5b9e\u73b0\u548c\u7ba1\u7406\u6982\u8ff0:<br \/>\n   <\/strong>\n  <\/p>\n<p>\n   Android\u58c1\u7eb8\u7684\u5b9e\u73b0\u548c\u7ba1\u7406\u5206\u4e3a\u4e09\u5c42\uff1a\n  <\/p>\n<ul>\n<li>\n    WallpaperService\u4e0eEngine\n   <\/li>\n<\/ul>\n<blockquote>\n<p>\n    \u58c1\u7eb8\u8fd0\u884c\u5728\u4e00\u4e2aAndroid\u670d\u52a1\u4e4b\u4e2d\uff0c\u8fd9\u4e2a\u670d\u52a1\u7684\u540d\u5b57\u53eb\u505aWallpaperService\u3002\u5f53\u7528\u6237\u9009\u62e9\u4e86\u4e00\u4e2a\u58c1\u7eb8\u4e4b\u540e\uff0c\u6b64\u58c1\u7eb8\u6240\u5bf9\u5e94\u7684WallpaperService\u4fbf\u4f1a\u542f\u52a8\u5e76\u5f00\u59cb\u8fdb\u884c\u58c1\u7eb8\u7684\u7ed8\u5236\u5de5\u4f5c\u3002Engine\u662fWallpaperService\u4e2d\u7684\u4e00\u4e2a\u5185\u90e8\u7c7b\uff0c\u5b9e\u73b0\u4e86\u58c1\u7eb8\u7a97\u53e3\u7684\u521b\u5efa\u4ee5\u53caSurface\u7684\u7ef4\u62a4\u5de5\u4f5c\u3002\u8fd9\u4e00\u5c42\u6b21\u7684\u5185\u5bb9\u4e3b\u8981\u4f53\u73b0\u4e86\u58c1\u7eb8\u7684\u5b9e\u73b0\u539f\u7406\u3002\n   <\/p>\n<\/blockquote>\n<ul>\n<li>\n<p>\n     WallpaperManagerService\n    <\/p>\n<\/li>\n<\/ul>\n<blockquote>\n<p>\n    \u8fd9\u4e2a\u7cfb\u7edf\u670d\u52a1\u7528\u4e8e\u7ba1\u7406\u58c1\u7eb8\u7684\u8fd0\u884c\u4e0e\u5207\u6362\uff0c\u5e76\u901a\u8fc7WallpaperManager\u7c7b\u5411\u5916\u754c\u63d0\u4f9b\u64cd\u4f5c\u58c1\u7eb8\u7684\u63a5\u53e3\u3002\u8fd9\u4e00\u5c42\u6b21\u4e3b\u8981\u4f53\u73b0\u4e86Android\u5bf9\u58c1\u7eb8\u7684\u7ba1\u7406\u65b9\u5f0f\u3002\n   <\/p>\n<\/blockquote>\n<ul>\n<li>\n<p>\n     WindowManagerService\n    <\/p>\n<\/li>\n<\/ul>\n<blockquote>\n<p>\n    \u7528\u4e8e\u8ba1\u7b97\u58c1\u7eb8\u7a97\u53e3\u7684Z\u5e8f\u3001\u53ef\u89c1\u6027\u4ee5\u53ca\u4e3a\u58c1\u7eb8\u5e94\u7528\u7a97\u53e3\u52a8\u753b\u3002\u8fd9\u4e00\u5c42\u6b21\u4e3b\u8981\u4f53\u73b0\u4e86Android\u5bf9\u58c1\u7eb8\u7a97\u53e3\u7684\u7ba1\u7406\u65b9\u5f0f\u3002\n   <\/p>\n<\/blockquote>\n<p>\n   <strong><br \/>\n    \u4e0a\u5c42\u8c03\u7528component_deinit\u7684\u8fc7\u7a0b:<br \/>\n   <\/strong>\n  <\/p>\n<blockquote>\n<p>\n    MediaCodec: stop \u00a0or release<br \/>\n    <br \/>\n    ACodec::initiateShutdown \u5728\u6b64\u51fd\u6570\u4e2d\u4f1a\u5224\u65adkeepComponentAllocated\u662f\u5426\u4e3afalse\uff0c\u5982\u679c\u662ffalse\u5c31\u53d1\u9001kWhatReleaseCodecInstance<br \/>\n    <br \/>\n    status_t err = mCodec-&gt;mOMXNode-&gt;freeNode();<br \/>\n    <br \/>\n    Omx::freeNode \/\/ \u6b64\u5904\u8c03\u7528mMaster-&gt;destroyComponentInstance<br \/>\n    <br \/>\n    QComOMXPlugin::destroyComponentInstance \/\/ (*mFreeHandle)(reinterpret_cast&lt;OMX_HANDLETYPE *&gt;(component));<br \/>\n    <br \/>\n    \/\/ mFreeHandle = (FreeHandleFunc)dlsym(mLibHandle, &#8220;OMX_FreeHandle&#8221;);<br \/>\n    <br \/>\n    OMX_FreeHandle \/\/ qc_omx_component_deinit<br \/>\n    <br \/>\n    qc_omx_component_deinit \u00a0 \/\/ eRet = pThis-&gt;component_deinit(hComp);\n   <\/p>\n<\/blockquote>\n<p>\n   <strong><br \/>\n    Android\u52a8\u6001\u58c1\u7eb8\u7684\u5177\u4f53\u5b9e\u73b0:<br \/>\n   <\/strong>\n  <\/p>\n<p>\n   \u5b89\u5353\u58c1\u7eb8\u7684\u5b9e\u73b0\u90fd\u662f\u5728WallpaperService\u4e2d\u5b8c\u6210\u7684\uff0c\u52a8\u6001\u58c1\u7eb8\u53ea\u662f\u5bf9\u58c1\u7eb8\u529f\u80fd\u7684\u6269\u5c55\uff0c\u6240\u4ee5\u52a8\u6001\u58c1\u7eb8\u7684\u5b9e\u73b0\u9996\u5148\u4f1a\u521b\u5efa\u4e00\u4e2a\u670d\u52a1\u5e76\u96c6\u6210WallpaperService\u3002WallpaperService\u4e2d\u6709\u4e00\u4e2a\u5185\u90e8\u7c7bEngine\uff0cEngine\u5b9e\u73b0\u4e86\u5b9e\u73b0\u4e86\u58c1\u7eb8\u7a97\u53e3\u7684\u521b\u5efa\u4ee5\u53caSurface\u7684\u7ef4\u62a4\u5de5\u4f5c\u3002\u5c31\u662f\u8bf4\u6211\u4eec\u53ef\u4ee5\u83b7\u53d6\u5230\u4e00\u4e2aSurfaceHolder\uff0c\u62ff\u5230\u8fd9\u4e2a\u4e1c\u897f\u5c31\u597d\u529e\u4e86\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u4e0a\u9762\u753b\u81ea\u5df1\u60f3\u8981\u7684\u4e1c\u897f\u6216\u8005\u628a\u89c6\u9891\u8f93\u51fa\u5230\u4e0a\u9762\u53bb\u3002\u4e0b\u9762\u76f4\u63a5\u770b\u4ee3\u7801:\n  <\/p>\n<pre class=\"has\"><code>\/\/ packages\/apps\/ThemeManager\/src\/com\/android\/thememanager\/service\/VideoWallpaperService.java\npublic class VideoWallpaperService extends WallpaperService {\n    private static final String TAG = \"VideoWallpaper\";\n\n    public Engine onCreateEngine() {\u3000\/\/ \u521b\u5efaVideoEngine\uff0cVideoWallpaperService\u5b9e\u73b0\u7684\u5185\u5bb9\u90fd\u5728VideoEngine\u4e2d\n        return new VideoEngine();\n    }\n\n    private class VideoEngine extends WallpaperService.Engine {\n\n        private MediaPlayer mediaPlayer = new MediaPlayer();\u3000\/\/ \u521b\u5efa\u64ad\u653e\u5668MediaPlayer\n        private String path;\n        private boolean isAudioOn;\n\n        private AudioManager mAudioManager;\n        \/\/ \u521b\u5efaAudioFocusChangeListener\n        private AudioManager.OnAudioFocusChangeListener mOnAudioFocusChangeListener = new AudioManager.OnAudioFocusChangeListener() {\n            @Override\n            public void onAudioFocusChange(int focusChange) {\n                \/\/ \u7565\n            }\n        };\n\n        private BroadcastReceiver mUpdateVideoReceiver = new BroadcastReceiver() {\n\n            @Override\n            public void onReceive(Context context, Intent intent) {\n                String action = intent.getAction();\n                    \/\/ \u7565\n                    initEngine(); \/\/ \u521d\u59cb\u5316Engine\n                }\n            }\n        };\n\n        @Override\n        public void onCreate(SurfaceHolder surfaceHolder) {\n            \/\/ \u7565\n        }\n\n        @Override\n        public void onDestroy() {\n            super.onDestroy();\n            mediaPlayer.release(); \/\/ \u91ca\u653emediaPlayer\n            unregisterReceiver(mUpdateVideoReceiver);\n        }\n\n        @Override\n        public void onSurfaceCreated(SurfaceHolder holder) {\n            super.onSurfaceCreated(holder);\n            initEngine();\n        }\n\n        @Override\n        public void onVisibilityChanged(boolean visible) { \/\/ \u5f53\u58c1\u7eb8\u6709\u524d\u540e\u53f0\u7684\u5207\u6362\n            super.onVisibilityChanged(visible);\n            try {\n                if (visible) {\n                    mediaPlayer.start(); \/\/\u3000\u5982\u679c\u5207\u6362\u4e3a\u524d\u53f0\uff0c\u5f00\u59cb\u64ad\u653e\n                } else {\n                    mediaPlayer.pause(); \/\/ \u5982\u679c\u5207\u6362\u4e3a\u540e\u53f0\uff0c\u6682\u505c\u64ad\u653e\n                    \/\/ \u8c03\u7528pause\u53ea\u4f1apause source\u548crender\u4e0d\u4f1a\u91ca\u653edecoder.\n                }\n            } catch (IllegalStateException e) {\n                Log.e(TAG, \"onVisibilityChanged video exception \", e);\n            }\n        }\n\n        private void initEngine() {\u3000\/\/ \u5728\u6b64\u51fd\u6570\u4e2d\u5b9e\u73b0\u4e86\u5bf9\u89c6\u9891\u6587\u4ef6\u7684\u5904\u7406\uff0c\u53ca\u5bf9player\u7684\u64cd\u4f5c\n            Log.d(TAG, \"initEngine\");\n            File videoFile = null;\n            InputStream inputStream = null;\n            FileOutputStream outputStream = null;\n            try {\n                Context context = VideoWallpaperService.this;\n                if (Build.VERSION.SDK_INT &gt;= Build.VERSION_CODES.N) {\n                    context = context.createDeviceProtectedStorageContext();\n                }\n                File filesDir = context.getFilesDir();\n                String videoPath = filesDir.getAbsolutePath() + \"\/video\";\n                File videoFileDir = new File(videoPath);\n                final String fileName = FileUtils.getFileName(path);\n                videoFile = new File(videoFileDir, fileName);\n                if (!videoFile.exists()) {\n                    \/\/ Clean all video\n                    FileUtils.rm(videoPath);\n                    videoFileDir.mkdir();\n                    \/\/ Write current video\n                    inputStream = new FileInputStream(new File(path));\n                    outputStream = new FileOutputStream(videoFile);\n                    \/\/ 16k buffer\n                    byte buffer[] = new byte[16384];\n                    int length = 0;\n                    while ((length = inputStream.read(buffer)) != -1) {\n                        outputStream.write(buffer, 0, length);\n                    }\n                }\n            } catch (Exception e) {\n                Log.e(TAG, \"load video file error : \", e);\n            } finally {\n                Utils.closeQuietly(outputStream);\n                Utils.closeQuietly(inputStream);\n            }\n\n            try {\n                if (videoFile != null &amp;&amp; videoFile.exists()) {\n                    mediaPlayer.reset();\n                    Surface surface = getSurfaceHolder().getSurface();\n                    mediaPlayer.setSurface(surface);\n                    mediaPlayer.setDataSource(new FileInputStream(videoFile).getFD());\n                    setAudioState(isAudioOn);\n                    mediaPlayer.setLooping(true);\n                    mediaPlayer.prepare();\n                    mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {\n                        @Override\n                        public void onPrepared(MediaPlayer mp) {\n                            mp.start();\n                        }\n                    });\n                    mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {\n                        @Override\n                        public boolean onError(MediaPlayer mp, int what, int extra) {\n                            mp.reset();\n                            return false;\n                        }\n                    });\n                }\n            } catch (Exception e) {\n                Log.e(TAG, \"configVideoEngine err \", e);\n            }\n        }\n\n        private void setAudioState(boolean isOn) { \/\/ \u8bbe\u7f6e\u97f3\u9891\n            try {\n                float volume = isOn ? 0.5f : 0;\n                mediaPlayer.setVolume(volume, volume);\u3000\n            } catch (IllegalStateException e) {\n                Log.e(TAG, \"setAudioState err\", e);\n            }\n        }\n    }<\/code><\/pre>\n<\/p><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00: \u6700\u8fd1\u9047\u5230\u4e86\u51e0\u4e2a\u5f88\u6076\u5fc3\u7684\u95ee\u9898\uff0c\u7b2c\u4e00\u4e2a\u662f\u624b\u673a\u5f55\u5236\u89c6\u9891\u53d1\u73b0\u8d44\u6e90\u4e0d\u591f\u7528\uff0c\u7b2c\u4e8c\u4e2a\u662f\u624b\u673a\u64ad\u653e\u89c6\u9891\u53d1\u73b0\u5361\u987f\u3002\u627e\u4e86\u534a\u5929 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":215,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-1980","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-8"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Android-\u52a8\u6001\u58c1\u7eb8\u7684\u5b9e\u73b0 - \u7269\u5ae9\u8f6f\u4ef6\u8d44\u8baf\u7f51<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.wunen.com\/index.php\/2025\/05\/08\/android-\u52a8\u6001\u58c1\u7eb8\u7684\u5b9e\u73b0\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Android-\u52a8\u6001\u58c1\u7eb8\u7684\u5b9e\u73b0 - \u7269\u5ae9\u8f6f\u4ef6\u8d44\u8baf\u7f51\" \/>\n<meta property=\"og:description\" content=\"\u524d\u8a00: \u6700\u8fd1\u9047\u5230\u4e86\u51e0\u4e2a\u5f88\u6076\u5fc3\u7684\u95ee\u9898\uff0c\u7b2c\u4e00\u4e2a\u662f\u624b\u673a\u5f55\u5236\u89c6\u9891\u53d1\u73b0\u8d44\u6e90\u4e0d\u591f\u7528\uff0c\u7b2c\u4e8c\u4e2a\u662f\u624b\u673a\u64ad\u653e\u89c6\u9891\u53d1\u73b0\u5361\u987f\u3002\u627e\u4e86\u534a\u5929 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"http:\/\/www.wunen.com\/index.php\/2025\/05\/08\/android-\u52a8\u6001\u58c1\u7eb8\u7684\u5b9e\u73b0\/\" \/>\n<meta property=\"og:site_name\" content=\"\u7269\u5ae9\u8f6f\u4ef6\u8d44\u8baf\u7f51\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-08T10:00:07+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/www.wunen.com\/wp-content\/uploads\/2025\/03\/\u8d44\u8baf.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"260\" \/>\n\t<meta property=\"og:image:height\" content=\"180\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"admin@wunen\" \/>\n<meta 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