iphone - Check if UIImage property got assigned or not? -

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i have uiimage property, , after shooting image iphone camera assigned image object property, otherwise not. how can check if property contains image after shooting or not? below code didn't help.

@interface myviewcontroller : uiview<uinavigationcontrollerdelegate, uiimagepickercontrollerdelegate> @property(nonatomic, retain) uiimage *imageshot; @end  @implementation myviewcontroller @synthesize imageshot = _imageshot;  - (id)init {     self = [super init];     if (self) {         _imageshot = [[uiimage alloc] init];     } }  - (void)imagepickercontroller:(uiimagepickercontroller *)picker didfinishpickingmediawithinfo:(nsdictionary *)info {     self.imageshot = [info objectforkey:uiimagepickercontrollereditedimage]; }  - (void)buttonclick {     if (_imageshot) {      }      else {      } }  @end

in init, should create shotedimage nil instead of alloc'ing new, empty image. that'll allow perform tests if (!shotedimage) (as nil == 0).


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