ios - UIImage not retrieving From NSUserDefaults -

in application grab image picker , try display in separate view.

in mainviewcontroller.m have

-(void)imagepickercontroller:(uiimagepickercontroller*)picker didfinishpickingmediawithinfo:(nsdictionary*)info { [picker dismissviewcontrolleranimated:yes completion:^ {      self.image = [info objectforkey:@"uiimagepickercontrolleroriginalimage"];      nsuserdefaults *defaults = [nsuserdefaults standarduserdefaults];     [defaults setobject:uiimagepngrepresentation(self.image) forkey:@"imagekey"];     [defaults synchronize];      publishviewcontroller *publish = [self.storyboard instantiateviewcontrollerwithidentifier:@"publish"];     [self presentviewcontroller:publish animated:yes completion:nil]; }]; } 

i try retrieve image in publishviewcontroller.m

- (void)viewdidload { [super viewdidload]; // additional setup after loading view. nsdata *imagedata = [[nsuserdefaults standarduserdefaults] objectforkey:@"imagekey"]; uiimage *userimage = [uiimage imagewithdata:imagedata]; self.image = [[uiimageview alloc] initwithimage:userimage]; } 

the image not show though. reason why?

perhaps -viewdidload in publishviewcontroller.m called before completion block in dismissviewcontrolleranimated:completion: , nsdata has not been saved in nsuserdefaults, yet.
put code load self.image in publishviewcontroller.m -viewdidappear.
being said agree commenters nsuserdefaults may not best place store image data.