I am designing an Android application which will be displaying some news that will be retrieved from a remote URL in xml format, say http://adomain/latest.xml
The XML file has the following format:
<articles>
<article>
<id>6</id>
<title>A sample title</title>
<image>http://adomain/images/anImage.jpg</image>
<lastupdate>1326938231</lastupdate>
<content><![CDATA[Sample content]]></content>
</article>
...
</articles>
I have created an Updater Service which listens to Connectivity Changes and when the system has a connection over the internet, it tries to download the xml file. Then parse it and save data. The Updater runs on a separate thread, every 10 minutes.
My question is:
What is the best way to handle the images?
a) Should I perform lazy loading on images when a news item is displayed
OR
b) Should I download the image when I parse the xml file?
I recommend lazy loading as the news item is displayed, so you don’t use excessive bandwidth (and potentially cost for the user). No point in downloading images if the user never wants to look at them.