WPF开发-音频播放

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WPF开发-音频播放

前言

/Resources/count_down.mp3

属性

image-20240730113950982

页面中

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<MediaElement
    x:Name="MediaAudio"
    Width="0"
    LoadedBehavior="Manual"
    MediaEnded="MediaAudio_MediaEnded"
    MediaOpened="MediaAudio_MediaOpened"
    Stretch="Fill"
    Visibility="Hidden"
    Volume="1" />

方法

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#region 音频播放

/// <summary>
///     音频播放 同步进度条和视频进度
/// </summary>
/// <param name="sender">
/// </param>
/// <param name="e">
/// </param>
private void MediaAudio_MediaOpened(object sender, RoutedEventArgs e)
{
    Console.WriteLine(@"播放中。。。");
}

private void MediaAudio_MediaEnded(object sender, RoutedEventArgs e)
{
    MediaAudio.Stop();
    MediaAudio.Position = TimeSpan.Zero;
}

#endregion 音频播放

代码

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string mp3Path = FileToolsCommon.GetFileAbsolutePath("Resources/count_down.mp3");
MediaAudio.Source = new Uri(mp3Path);
MediaAudio.LoadedBehavior = MediaState.Manual; // 防止自动播放
MediaAudio.Position = TimeSpan.Zero;
MediaAudio.Play();

获取文件路径

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/// <summary>
/// 获取文件的绝对路径
/// </summary>
/// <param name="path">相对路径</param>
/// <returns></returns>
public static string GetFileAbsolutePath(string path = "")
{
    if (path != null)
    {
        string pathAll = path.Contains(":") ? path : Path.Combine(AppDomain.CurrentDomain.BaseDirectory, path);
        pathAll = pathAll.Replace(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
        return pathAll;
    }
    return "";
}

播放减低延迟

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private void InitAudio()
{
    string mp3Path = FileToolsCommon.GetFileAbsolutePath("Resources/count_down.mp3");
    MediaAudio.Source = new Uri(mp3Path);
    MediaAudio.LoadedBehavior = MediaState.Manual; // 防止自动播放
}

private void PlayCountDownAudio()
{
    MediaAudio.Position = TimeSpan.Zero;
    MediaAudio.Play();
}

我们可以提前初始化，并关闭它的自动播放，在需要播放的时候再播放。