我解决了这个问题... :) :) ....
我决定用其他论坛的许多想法制作自己的应用程序。
我的解决方案比我计划的要容易,我使用了 2 个视频、2 个 mediaElements、一个 mediaEnded 事件和布尔变量来更改视频......
并且完美运行!解决方案在这里------> (解决方案和评论)
在我的应用程序中,我不必使用诸如时钟、TimeLines、DispatcherTimer 之类的属性或诸如 CurrentTimeInvalidate 之类的任何事件,我只使用了 MediaEnded 事件和一个布尔变量。:) 不再。我有 2 个视频(1.5 秒和 3 秒)。当 MediaEnded(media 1,5 seconds) mediaElement1,5sec.Position = TimeSpam.Zero; 和 MediElement3sec.Position = TimeSpam.Zero,当我单击按钮时,我只是评估变量(布尔值)并播放 3 秒的完整视频。
但是,源代码在这里:MainWindow.xaml
<Window x:Class="wpf_TestVideos.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="371" Width="525" Loaded="Window_Loaded">
<Grid>
<MediaElement Height="268" HorizontalAlignment="Left" Margin="141,12,0,0" Name="mediaElement15sec" VerticalAlignment="Top" Width="237" MediaEnded="mediaElement15sec_MediaEnded" />
<MediaElement Height="268" HorizontalAlignment="Left" Margin="142,12,0,0" Name="mediaElement3sec" VerticalAlignment="Top" Width="236" />
<Button Content="Load" Height="34" HorizontalAlignment="Left" Margin="12,286,0,0" Name="btLoad" VerticalAlignment="Top" Width="73" Click="btLoad_Click" />
<Button Content="Inicio Juego" Height="23" HorizontalAlignment="Left" Margin="128,286,0,0" Name="btStart" VerticalAlignment="Top" Width="86" Click="btStart_Click" />
<Button Content=""Reconoce Gesto"" Height="23" HorizontalAlignment="Left" Margin="285,286,0,0" Name="btGesture" VerticalAlignment="Top" Width="108" Click="btGesture_Click" />
</Grid>
MainWindow.xaml.cs:
using System;
using System.IO;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Windows;
using System.Windows.Forms;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Navigation;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Interop;
using System.Windows.Media.Animation;
using System.Threading;
namespace wpf_TestVideos
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
string VideoLocation = System.IO.Path.GetDirectoryName(System.Windows.Forms.Application.ExecutablePath);
string sFileName = "";
string sFileName2 = "";
bool bVideoLoop = true;
TranslateTransform trans = new TranslateTransform();
private void btLoad_Click(object sender, RoutedEventArgs e)
{
mediaElement15sec.LoadedBehavior = MediaState.Manual;
mediaElement3sec.LoadedBehavior = MediaState.Manual;
btGesture.IsEnabled = true;
btStart.IsEnabled = true;
btLoad.IsEnabled = false;
DirectoryInfo df = new DirectoryInfo(VideoLocation);
if (df.Exists)
{
sFileName = VideoLocation + @"\Krown_test_loop.mov";
mediaElement15sec.Source = new Uri(sFileName);
mediaElement15sec.Stretch = Stretch.Fill;
sFileName2 = VideoLocation + @"\Krown_test_7.mov";
mediaElement3sec.Source = new Uri(sFileName2);
mediaElement3sec.Stretch = Stretch.Fill;
}
else
{
System.Windows.Forms.MessageBox.Show("No se puede cargar el video", "TestAll");
}
}
private void btStart_Click(object sender, RoutedEventArgs e)
{
mediaElement15sec.Position = TimeSpan.Zero;
mediaElement3sec.Position = TimeSpan.Zero;
mediaElement15sec.Play();
mediaElement3sec.Play();
bVideoLoop = true;
//VisualStateManager.GoToState(mediaElement15sec, "Bring1,5ToFront", true);
}
private void mediaElement15sec_MediaEnded(object sender, RoutedEventArgs e)
{
if (bVideoLoop)
{
mediaElement15sec.Position = TimeSpan.Zero;
mediaElement3sec.Position = TimeSpan.Zero;
}
}
private void btGesture_Click(object sender, RoutedEventArgs e)
{
bVideoLoop = false;
//Animacion_Opacidad(bVideoLoop);
//VisualStateManager.GoToState(mediaElement3sec, "Bring300ToFront", true);
}
private void Animacion_Opacidad(bool bLoop)
{
mediaElement15sec.RenderTransform = trans;
if (!bLoop)
{
DoubleAnimation anim1 = new DoubleAnimation(1, 0, TimeSpan.FromSeconds(1));
trans.BeginAnimation(OpacityProperty, anim1);
}
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
btGesture.IsEnabled = false;
btStart.IsEnabled = false;
btLoad.IsEnabled = true;
}
}
}