如何在 Windows 8 中在线播放背景音乐

How to play background music online in Windows 8(如何在 Windows 8 中在线播放背景音乐)

问题描述

在我的应用程序中，我使用 UI MediaElement.但是当我点击 Windows 键时，音乐停止了.

我尝试使用:

MediaControl.PlayPressed += MediaControl_PlayPressed;MediaControl.PausePressed += MediaControl_PausePressed;MediaControl.PlayPauseTogglePressed += MediaControl_PlayPauseTogglePressed;MediaControl.StopPressed += MediaControl_StopPressed;

我设置源 MediaElement:

media.Source = new Uri("http://stream-hq.mp3.zdn.vn/fsgggsfdlwjglwjAAAAA/2a3f830202ea6d29bc7c5a5146401566/4ff5620a/2011/12/27/a/4/a4fcc199a184a93cfeb0fe35642.相对或绝对)；

请帮帮我！

要让 Metro/WinRT 应用在后台播放音频，应用需要满足以下条件:

1. 一个 了解更多信息捕获硬件按钮(例如键盘上的播放/暂停)和 创建媒体播放器的快速入门指南了解更多信息.

   In my application, I use UI MediaElement. But when i click the Windows key, the music stops.

   I tried using:

   MediaControl.PlayPressed += MediaControl_PlayPressed;
           MediaControl.PausePressed += MediaControl_PausePressed;
           MediaControl.PlayPauseTogglePressed += MediaControl_PlayPauseTogglePressed;
           MediaControl.StopPressed += MediaControl_StopPressed;
   

   I set source MediaElement:

   media.Source = new Uri("http://stream-hq.mp3.zdn.vn/fsgggsfdlwjglwjAAAAA/2a3f830202ea6d29bc7c5a5146401566/4ff5620a/2011/12/27/a/4/a4fcc199a184a93cfeb0fe35642c53bf.mp3", UriKind.RelativeOrAbsolute);
   

   Please help me!

   解决方案

   For a Metro/WinRT app to play audio in background, the app needs the following:

   1. A MediaElement control that:
      1. Is in a XAML page.
      2. The AudioCategory property set to BackgroundCapableMedia (as in Armando's answer). There are other values for games or communication systems as needed. See the Audio Playback in a Metro Application for information on what the different options mean.

   2. Use the MediaControl object to capture at least the following. Other events and properties can be handled if desired but the following are required for background playback to function.
      1. PlayPressed
      2. StopPressed
      3. PlayPauseTogglePressed
      4. PausePressed

   3. Add audio to the list of support background tasks in the applications manifest. The manifest is usually called Package.appxmanifest. Select it in the Solution Explorer, go to the Declarations tab and check "Audio" as shown:

   See the Transport Controls Guide for more info about capturing hardware buttons (e.g. play/pause on the keyboard) and the quickstart guide for creating a media player for more info.

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