ios - no visible @interface does not debug -

 -(ibaction)takephoto { picker = [[uiimagepickercontroller alloc]init]; picker.delegate = self; [picker setsourcetype:uiimagepickercontrollersourcetypecamera]; [self presentedviewcontroller:picker animated:yes completion:nil]; }  - (ibaction)chooseexisting { picker2 = [[uiimagepickercontroller alloc]init]; picker2.delegate = self; [picker2 setsourcetype:uiimagepickercontrollersourcetypecamera]; [self presentedviewcontroller:picker2 animated:yes completion:nil]; }  - (void) imagepickercontroller:(uiimagepickercontroller *)picker    didfinishpickingmediawithinfo:(nsdictionary *)info { image = [info objectforkey:uiimagepickercontrolleroriginalimage]; [imageview setimage:image]; [self dismissviewcontrolleranimated:yes completion:nil];  }   - (void)imagepickercontrollerdidcancel:(uiimagepickercontroller *)picker { [self dismissviewcontrolleranimated:yes completion:null]; 

when try run app

[self presentedviewcontroller:picker animated:yes completion:nil]; 

gets highlighted in red saying no visible @interface viewcontroller declares sector presentedviewcontroller:animated :completion :

my .h file

@interface viewcontroller : uiviewcontroller <uiimagepickercontrollerdelegate, uinavigationcontrollerdelegate> { uiimagepickercontroller *picker; uiimagepickercontroller *picker2; uiimage *image; iboutlet uiimageview *imageview;  }  - (ibaction)takephoto; - (ibaction)chooseexisting; 

you have typo: presentedviewcontroller instead of presentviewcontroller on line

[self presentedviewcontroller:picker animated:yes completion:nil]; 

(in more 1 place)