Windows Phone - 媒体库

Question

这是我的代码。

MediaLibrary myMediaLibrary = new MediaLibrary(); 
Uri myUri = new Uri(@"Images/Jellyfish.jpg", UriKind.Relative); 
System.IO.Stream photoStream = App.GetResourceStream(myUri).Stream; 
byte[] buffer = new byte[photoStream.Length]; 
photoStream.Read(buffer, 0, Convert.ToInt32(photoStream.Length)); 
myMediaLibrary.SavePicture("Jellyfish.jpg", buffer); 

在模拟器上一切都被保存。但在设备上显示错误“发生意外错误”。

Answer 1

保存您的流直接不起作用？

MediaLibrary myMediaLibrary = new MediaLibrary(); 
Uri myUri = new Uri(@"Images/Jellyfish.jpg", UriKind.Relative); 
System.IO.Stream photoStream = App.GetResourceStream(myUri).Stream; 
myMediaLibrary.SavePicture("Jellyfish.jpg", photoStream); 

或者您可以使用WriteableBitmap并保存到Stream这个，然后用MediaLibray保存。

wr.SaveJpeg(FileStream, wr.PixelWidth, wr.PixelHeight, 0, 85);