iphone - UIButton in a custom UIView trouble -

i have simple (view-based) application. want on tapping on custom uiview button moved somewhere inside view (for example point 10,10).

1. my custom uiview drawview (drawview.h , drawview.m).
2. rotatorviewcontroller (h. , .m).

i add drawview uibutton, connect outlets drawview , uibutton. add uitapgesturerecognizer in rotatorviewcontroller , @selector(tap:). here code of uitapgesturerecognizer

 - (void)viewdidload {     [super viewdidload];     uigesturerecognizer *tapgr = [[uitapgesturerecognizer alloc] initwithtarget:drawview action:@selector(tap:)];     [drawview addgesturerecognizer:tapgr];     [tapgr release];  } 

@selector(tap:)

 - (void) tap:(uitapgesturerecognizer *)gesture {         mybutton.transform = cgaffinetransformmaketranslation(10, 10); } 

but when tap anywhere in drawview application crashes. here log console

 2011-02-23 20:59:24.897 rotator[7345:207] -[drawview tap:]: unrecognized selector sent instance 0x4d0fa80 2011-02-23 20:59:24.900 rotator[7345:207] *** terminating app due uncaught exception 'nsinvalidargumentexception', reason: '-[drawview tap:]: unrecognized selector sent instance 0x4d0fa80' 

i need help

you said :

uitapgesturerecognizer in rotatorviewcontroller , @selector(tap:)

and wrote : uigesturerecognizer *tapgr = [[uitapgesturerecognizer alloc] initwithtarget:drawview action:@selector(tap:)];

it means actions performed in drawview delegate defined selector tap: in rotatorviewcontroller.

i think have replace target drawview self

uigesturerecognizer *tapgr = [[uitapgesturerecognizer alloc] initwithtarget:self action:@selector(tap:)];