objective c - Snapshotting a view that has not been rendered results in an empty snapshot in iOS 7 -

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in ios 8, when click open camera ipad mini gives warning

"snapshotting view has not been rendered results in empty snapshot"

i using below code open camera device.

- (ibaction)takephotograph:(uibutton *)sender {     uiimagepickercontroller *picker = [[uiimagepickercontroller alloc] init];     picker.delegate = self;     picker.allowsediting = yes;     picker.sourcetype = uiimagepickercontrollersourcetypecamera;                 [self presentviewcontroller:picker animated:yes completion:null];     }  - (void)imagepickercontroller:(uiimagepickercontroller *)picker didfinishpickingmediawithinfo:(nsdictionary *)info {         uiimage *chosenimage = info[uiimagepickercontrollereditedimage];         [self.cmdtakephotograph setimage:chosenimage forstate:uicontrolstatenormal];         [picker dismissviewcontrolleranimated:yes completion:null];         imagetaken = 1;         compress = 1;         self.lblerrmsg.hidden = yes;  }  - (void)imagepickercontrollerdidcancel:(uiimagepickercontroller *)picker {         [picker dismissviewcontrolleranimated:yes completion:null]; }

please suggest me solution remove warning.

hope helps you. 

      uiimagepickercontroller *imagepicker = [[uiimagepickercontroller alloc] init];       [imagepicker setsourcetype:uiimagepickercontrollersourcetypecamera];       [imagepicker setdelegate:self];       if ([self respondstoselector:@selector(presentviewcontroller:animated:completion:)])      {         [imagepicker setshowscameracontrols:no];         [self presentviewcontroller:imagepicker animated:yes  completion:^{         [imagepicker setshowscameracontrols:yes];        }];     }    else    {       [imagepicker setshowscameracontrols:yes];       [self presentmodalviewcontroller:imagepicker animated:yes];   }

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