True modal dialog

Is any way exist to make true modal dialog on Iphone? I Tried something like this:

UIAlertView* view = [[UIAlertView alloc] initWithTitle: @"Alert" message: @"Text" ....];
[view show];
[view release];
//my code

When "[view show];" is called and Alert is appeared next line in my code is executed. It isn't what I want... I need show dialog and return to next code execution only when dialog will be closed.