ios - Swift 1.2: fatal error: unexpectedly found nil while unwrapping an Optional value -


i wanted click picture , display on uiimageview.

i had defined needed outlets , actions , here code.

but shows error.

class viewcontroller: uiviewcontroller, uiimagepickercontrollerdelegate, uinavigationcontrollerdelegate {      @iboutlet weak var camera: uibutton!      @iboutlet weak var gallery: uibutton!      @iboutlet weak var viewimage: uiimageview!      @ibaction func photogalleryaction(sender: uibutton) {          let picker = uiimagepickercontroller()          picker.delegate = self          picker.sourcetype = .photolibrary          presentviewcontroller(picker, animated: true, completion: nil)     }        func imagepickercontroller(picker: uiimagepickercontroller, didfinishpickingmediawithinfo info: [string : anyobject]) {          viewimage.image = info[uiimagepickercontrolleroriginalimage] as? uiimage          dismissviewcontrolleranimated(true, completion: nil)      } }

here error:

fatal error: unexpectedly found nil while unwrapping optional value

you have check connections between storyboard , code. if connected it, may corrupted using old storyboard file or else (it happens when using assitant editor)


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