ios - Xcode - warning "Method definition not found". Call Method from Category file -

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i have created method in category file. want reuse methods in view controllers. have imported category file in view controllers , declared method in header file also. calling this:

category class:

@interface uiviewcontroller (headerview) -(uilabel *)somemethod;  @implementation uiviewcontroller (headerview) -(uilabel *)somemethod{ }

homeviewcontroller:

@interface homeviewcontroller : uiviewcontroller -(uilabel *)somemethod;  @implementation homeviewcontroller [self somemethod];

iam getting warning message in line:

@implementation homeviewcontroller

its working. want clear warning. how can it?

if want category in view controller that

your category

@interface uiviewcontroller (extendedmethods) - (void)somemethod; @end  @implementation uiviewcontroller (extendedmethods) - (void)somemethod {   nslog(@"some method"); } @end

myviewcontroller.m 

#import "myviewcontroller.h" #import "uiviewcontroller+extendedmethods.h"  @implementation myviewcontroller - (void)viewdidload {   [super viewdidload];   [self somemethod]; } @end

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