Windows Phone - 媒體庫

Question

這是我的代碼。

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); 

在模擬器上一切都被保存。但在設備上顯示錯誤「發生意外錯誤」。

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並保存到Stream這個，然後用MediaLibray保存。

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