debugging - MediaElement仅在 Debug模式下播放音频，而在 Debug模式下不播放音频

Question

我正在Windows Phone 8上尝试通过创建用户控件和媒体元素在我的应用程序中实现音频播放功能。

令人惊讶的是，音频在调试过程中正在播放，但是当我在没有 Debug模式的情况下运行应用程序时，音频无法播放，因此我尝试了等待和异步方法，但是那也不起作用。

MainPage.xaml.cs

private async void AudioControl(string audioId, string audio_url)
{
   customControlAudioPlayer.media_Id = audioId;
   customAudioPlayer.media_Url = audio_url;
   //Following function is dedicated to show control and play the audio.
   await customAudioPlayer.RenderView();
   gridContainsMediaElement.Visibility = Visibility.Visible;
}

MainPage.xaml

xmlns:MyControls="clr-namespace:dbok.Controls"

<Grid Name="gridContainsMediaElement"  
      VerticalAlignment="Top"  
      Background="Black" Visibility="Collapsed">
        <MyControls:AudioPlayerControl 
           x:Name="customControlAudioPlayer"/>
       <!--CloseClick="audioPlayerControl_CloseClick"-->
</Grid>

CustomControlPlayer.xaml

 <Grid Background="{StaticResource PhoneChromeBrush}"  >

        <MediaElement x:Name="audioMediaElement" AutoPlay="False" 
            Grid.Row="0" 
            MediaOpened="audioMediaElement_MediaOpened"
            MediaEnded="audioMediaElement_MediaEnded"
                    MediaFailed="audioMediaElement_MediaFailed"
            HorizontalAlignment="Center" Height="05" 
            VerticalAlignment="Center"/>

    <Slider Visibility="Visible" Margin="50,0,50,0"
            x:Name="mediaPositionSlider" Background="#f1592a" 
            Minimum="0" Grid.Row="0" 
            />

    </StackPanel>
</Grid>

CustomControlPlayer.xaml.cs

 public string media_Id;
 public string media_Url;

 public async Task RenderView()
 {
    Uri file_url;
    if (Uri.TryCreate(media_Url, UriKind.Absolute, out file_url))
    {
        myElement.Source = file_url;
        myElement.Play();

        //I tried by check the media element state but its executing and playing only in debug mode. it was not working for me without debug i made it commented.
        //if (myElement.CurrentState != MediaElementState.Playing)
        //{
        //    myElement.Play();
        //}
        mediaPositionSlider.Value = 0;
        UpdateDuration(0);
   }

//-----------

private void UpdateDuration(double _myValue)
{
    TimeSpan t = TimeSpan.FromSeconds(_myValue);
    string time_slot = string.Format("{0:D2}:{1:D2}:{2:D2}",
                   t.Hours,
                   t.Minutes,
                   t.Seconds);
    PlayStatusLabel.Text = time_slot.ToString();
}

我已经发布了我的代码，在什么地方以及我在做什么呢？由于它在 Debug模式下无法在运行模式下播放？

Answer 1

我已经成功解决了我面临的问题，实际上当光标到达audioMediaElement.Play()时会发生什么？ Play()函数需要一些时间才能在内部执行，所以我将audioMediaElement.Play()替换为audioMediaElement.AutoPlay = true;它开始工作。 :) woooo hoooo ... :)