iphone - one nib file showing on another one -

i developing vin code scanner app iphone. went when try open nib displays on nib file. here code button launches new nib file.

-(ibaction)done{     sellautoviewcontroller *autocontroller = [[sellautoviewcontroller alloc] initwithnibname: @"sellautoviewcontroller" bundle: nil];     [self.view addsubview:autocontroller.view]; } 

and here did in sellautoviewcontroller.m use shoulautorotate function show in portrait mode nothing happened

-(bool)shouldautorotate{     return yes; } -(nsuinteger)supportedinterfaceorientations{     return (uiinterfaceorientationmaskportrait); } 

here view before tapping done button load sellautoviewcontroller https://www.dropbox.com/s/8ssi4n50dcaqf28/screenshot%202013.05.06%2013.26.54.png , here happen when tap done button. :( https://www.dropbox.com/s/q6z6a4dr0n198n3/screenshot%202013.05.06%2013.27.13.png

replace done method below method

-(ibaction)done{     sellautoviewcontroller *autocontroller = [[sellautoviewcontroller alloc] initwithnibname: @"sellautoviewcontroller" bundle: nil];     [self presentviewcontroller:controller animated:yes completion:nil]; }