Save RSS in the internal storage

i would like to store the RSS-feed I'm getting from a site 开发者_StackOverflow中文版in the internal storage,in order to be visible when the device WiFi is disabled.

I have never used internal storage before but I found in the internet that this is the best way to store the RSS-feed for offline view.

Do you have any way on mind to do that?thanks a lot!

---

I would read the documentation...