load second view from the first view

I am currently develop iphone app. the type of the app is Tab Bar. so i heave 4 tabs that in each tab i have different view. (each view have controller for itself)

now in the first view i am loading data from the net and when it finished i want automaticly to jump to the second tab co开发者_开发百科ntroller(to show the result).

but u cant find the way to load the second view from the first view?????????

thanks.

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self.tabBarController.selectedIndex = 1;