声音没有在正确的时间播放

本文关键字：时间 播放 声音 | 更新日期: 2023-09-27 17:51:08

我在Windows Phone应用程序中为背景音乐创建了一个MediaElement，它播放得很完美现在的问题是，当我试图添加声音按钮时，按下

当我调试时，背景音乐播放，但是当我按按钮时，它导航我到下一页而不播放我创建的声音，当我从导航页面按BackButton时，它播放它，为什么?

代码:

private void play_Click(object sender, RoutedEventArgs e)
{
    MediaElement Click = new MediaElement();
    Click.Source = new Uri ("/Assets/Sounds/press.mp3",UriKind.Relative);
    Click.Position = TimeSpan.Zero;
    Click.Volume = 1;
    LayoutRoot.Children.Add(Click);
    Click.Play();
    NavigationService.Navigate(new Uri("/NavPage.xaml", UriKind.Relative));
}

声音没有在正确的时间播放

private void play_Click(object sender, RoutedEventArgs e)
        {
            MediaElement Click = new MediaElement();
            Click.Source = new Uri ("/Assets/Sounds/press.mp3",UriKind.Relative);
            Click.Position = TimeSpan.Zero;
            Click.Volume = 1;
            LayoutRoot.Children.Add(Click);
            Click.Play();
        }

你应该处理这个外部按钮点击，

NavigationService.Navigate(new Uri("/NavPage.xaml", UriKind.Relative));

分别为click和call添加事件处理程序，

 Click.MediaEnded += Click_Completed;
 void Click_Completed(object sender, RoutedEventArgs e)
        {
           NavigationService.Navigate(new Uri("/NavPage.xaml", UriKind.Relative));
        }

或者你可以设置mediaElement的MediaEnded事件并在其中调用navigation

: 

private void play_Click(object sender, RoutedEventArgs e)
        {
            MediaElement Click = new MediaElement();
            Click.Source = new Uri ("/Assets/Sounds/press.mp3",UriKind.Relative);
            Click.Position = TimeSpan.Zero;
            Click.Volume = 1;
            LayoutRoot.Children.Add(Click);
            Click.MediaEnded += Click_MediaEnded;
            Click.Play();
        }
void Click_MediaEnded(object sender, RoutedEventArgs e)
       {
            NavigationService.Navigate(new Uri("/NavPage.xaml", UriKind.Relative));
       }
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