uisearchbar - bar button created from childViewController don't work -

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i have parentviewcontoller(with uinavigationitem), , childviewcontoller(with uitableviewcontoller, uisearchbar). want create uibarbuttonitem on click searchbar hiding.

tableviewcontoller.h(childviewcontoller)  @interface tableviewcontroller : uitableviewcontroller<uisearchbardelegate, uisearchdisplaydelegate, uinavigationcontrollerdelegate>  @property (nonatomic, strong) iboutlet uisearchbar *searchbar; @end  tableviewcontoller.m(childviewcontoller) @synthesize searchbar;  - (void)viewdidload  {     [super viewdidload];     self.searchbar.hidden = no;     [self createsearchbutton]; } - (void) createsearchbutton {     uibarbuttonitem *mybutton = [[uibarbuttonitem alloc] initwithtitle:@"mybutton" style:uibarbuttonitemstylebordered target:self action:@selector(ibutton:)];     self.parentviewcontroller.navigationitem.rightbarbuttonitem = mybutton; }  -(void) ibutton {     self.searchbar.hidden = yes;     nslog(@"click on ibutton"); }

but, if click on mybutton, nslog displayed, , searchbar not hidden. why code don't work?


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