Question

我阅读了this关于＆＃34;如何在后台播放音频的文章（XAML）＆＃34;并且工作，我很好地播放了我的mp3文件，但如果我尝试从应用程序音乐停止，我想＆＃34;背景音频＆＃34;即使应用程序没有关注屏幕也要播放！

XAML

<Grid>
    <MediaElement x:Name="musicPlayer" 
      Source="Assets/VIGEVANO.mp3"
      AudioCategory="BackgroundCapableMedia"
      CurrentStateChanged="MusicPlayer_CurrentStateChanged" />

</Grid>

CS

SystemMediaTransportControls systemControls;
public MainPage()
    {

        this.InitializeComponent();

        this.NavigationCacheMode = NavigationCacheMode.Required;
        // Hook up app to system transport controls.
        systemControls = SystemMediaTransportControls.GetForCurrentView();
        systemControls.ButtonPressed += SystemControls_ButtonPressed;

        // Register to handle the following system transpot control buttons.
        systemControls.IsPlayEnabled = true;
        systemControls.IsPauseEnabled = true;

    }

private void SystemControls_ButtonPressed(SystemMediaTransportControls sender, SystemMediaTransportControlsButtonPressedEventArgs args)
    {
        switch (args.Button)
        {
            case SystemMediaTransportControlsButton.Play:
                PlayMedia();
                break;
            case SystemMediaTransportControlsButton.Pause:
                PauseMedia();
                break;
            default:
                break;
        }
    }
    async void PlayMedia()
    {
        await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
        {
            musicPlayer.Play();
        });
    }

    async void PauseMedia()
    {
        await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
        {
            musicPlayer.Pause();
        });
    }

Manifest File

我想念的是什么？

Answer 1

达成总结答案由于背景流是主要要求所以解决方案达到了是查看此sample并告诉我它是否适合您。您的后台任务第一个教程适用于本地mp3文件，但流式音频本身就是一个不同的场景另外，对于流式传输，我们曾使用PhoneSM

如何播放背景音频Windows Phone 8.1

1 个答案: