Update an xml file with binary value of image

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This is an example XML file that would come from the Android Client.\[code\]<test><to>Mee</to><from>Youuu</from><img src="http://www.domain.com/path/to/my/image.jpg" /></test>\[/code\]I have written a XML parser about this. My problem is while passing it to the Android Client, I need to have the image binary data instead of the image path. How can I accomplish this and how can I update the above said XML with the binary data.