I don't know how to parse rss blogger

I have a problem with an rss reader
i use this code:http://techiedreams.com/android-simple-rss-reader/

And it works with other websites but not with mi blogger blog, i try this feed url but in the app te activity stays with a white background and do not show anithing, in the log console i can't see anything strange.

minecraft-schematics.blogspot.com/feeds/posts/default?alt=atomminecraft-schematics.blogspot.com/feeds/posts/default?alt=rss

I also try it with my wordpress blog (is the same) but it only works with rdf format and do not show any picture.

How can fix this? Thanks