[iPhone][UIApplication sharedApplication]

//상태창에 네트워크 연결상태 표시  default = NO;
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];

//상태창 숨김(인디게이터) 
[[UIApplication sharedApplication] setStatusBarHidden:YES animated:YES];


//화면 자동 잠김 설정 default = NO
[[UIApplication sharedApplication] setIdleTimerDisabled:YES];

//화면 회전 시키기
[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:NO];
//UIInterfaceOrientationPortraitUpsideDown, UIInterfaceOrientationLandscapeLeft, UIInterfaceOrientationLandscapeRight