ios - UILabel is always nil -

i have following problem.

this code:

gtsearchviewcontroller* vc = [[gtsearchviewcontroller alloc] initwithnibname:@"gtsearchviewcontroller"                                                                           bundle:nil];  vc.headlinelabel.text = [[self.categoriearray objectatindex:indexpath.row] valueforkey:@"categoryname"];  [appdelegate().centerviewcontroller pushviewcontroller:vc                                               animated:yes]; 

as can see, try push new viewcontroller xib file , want set string in headlinelabel array self.categoriearray. when searchcontroller gets pushed, works perfect, headlinelabel nil.

i don't understand why, thought don´t need call "alloc-init" in searchcontroller because build interface builder?

your problem changing ui before loaded.

you should set label's text in viewdidload of view controller (it called after view loaded).

---

make nsstring property in searchviewcontroller class , set right after initialization.

vc.headlinetext = [[self.categoriearray objectatindex:indexpath.row] valueforkey:@"categoryname"]; 

then in searchviewcontroller should override viewdidload method:

 - (void) viewdidload{        [super viewdidload];        self.headlinelabel.text = self.headlinetext;     } 

p.s. of course assume you've set headlinelabel outlet correctly (from interface builder).