ios - Unrecognized selector sent to instance when calling back button programmatically -


i'm viewing detail view when clicking on record table. when call button detail view using 

- (ibaction)loaddispensary { [self.navigationcontroller popviewcontrolleranimated:yes]; }

i unrecognized selector error.

i've tried pushing the detail controller following 2 ways.

push type 1 detailviewcontroller *detailview = [[self storyboard] instantiateviewcontrollerwithidentifier:@"detailview"]; detailview.strain = self.selectedstrain; [self.navigationcontroller pushviewcontroller:detailview animated:yes]; push type 2 [self performseguewithidentifier: @"detailsegue" sender: self]; //set strain on prepareforsegue

how button connected? can u show code? perhaps might have not linked button ibaction.


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