Can I send periodic messages to my Android app users?

Is it possible to make a app on Android such that whoever downloads this app receives a message from me weekly? I want to be the only person who can write on this message board and no one else. If this is possible, where should I start looking for tutorials about doing th开发者_JAVA技巧is sort of stuff?

You can create a RSS/Atom feed for yourself. Your android app can then just sync to this feed. Update the feed as often as you like. If you like this approach I can give more details.

yes , you can send periodic messages see this

in that  SendMessage(); function is there so you have to make code for send message to recipient