relaunch an app without quitting in iPhone

How can we call a main() m开发者_C百科ethod without quitting an app at runtime....or can we relaunch a application without quitting an app.... or can we reload a main window xib file without quitting an app...in iPhone

You cannot terminate an app using the iPhone SDK and you can't restart it either.

If you want to get back to your main/initial screen then you just need to pop whatever view controllers you have in your navigation stack and restore the main view to its initial state.