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Windows Phone 实用开发技巧(21):自动循环播放视频

2012-01-10

In Windows Phone Mango update, we can use VideoBrush since we could not do that in windows phone 7 . So there is something interesting to do. We can develop morefanta...

In Windows Phone Mango update, we can use VideoBrush since we could not do that in windows phone 7 . So there is something interesting to do. We can develop more fantasitic apps. For example, we can play a video as background in our application. We want to play video in a loop also. But here comes the problem. Since there is no aspx" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; color: rgb(255, 102, 0); text-decoration: none; ">MediaTimeline in Silverlight for Windows Phone API. How can we repeat media playback ?

In WPF or Silverlight, we can use following code to repeat media playback.


<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
<StackPanel>

<!-- The MediaElement control plays the sound. -->
<MediaElement Name="myMediaElement" >
<MediaElement.Triggers>
<EventTrigger RoutedEvent="MediaElement.Loaded">
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard>

<!-- The MediaTimeline has a RepeatBehavior="Forever" which makes the media play
over and over indefinitely.-->
<MediaTimeline Source="media\tada.wav" Storyboard.TargetName="myMediaElement"
RepeatBehavior="Forever" />

</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
</MediaElement.Triggers>
</MediaElement>

</StackPanel></Page>

In windows phone , I find simple solution to play video in a loop. Since we can catch Media_End event, we can play again in ended event.

\

Another suggestion : do not play large video in your windows phone app since it will cause a little bit performance damage.

Source code can be found here :

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