Ubuntu :: Check If Connected Then Launch App?

Well, i have some applications that i use everyday so i add them to the startup applications, but they require Internet, otherwise the configuration is lost. I'll like a command that first check if i'm connected to Internet and if i am, launch the app. If not, don't do nothing.

This is a problem because for some reason everytime i turn on my laptop the wireless adapter doesn't turn on automatically (it always did when i was running windows).