objective c - Take photo with iPhone and then use it! -

i have app takes photo , puts in image view. simple. code looks this:

- (void)takephoto:(id)sender {     // lazily allocate image picker controller     if (!imagepickercontroller) {         imagepickercontroller = [[uiimagepickercontroller alloc] init];          // if our device has camera, want take picture, otherwise, pick         // photo library         if ([uiimagepickercontroller issourcetypeavailable:uiimagepickercontrollersourcetypecamera])         {             [imagepickercontroller setsourcetype:uiimagepickercontrollersourcetypecamera];         }else         {             [imagepickercontroller setsourcetype:uiimagepickercontrollersourcetypephotolibrary];         }          // image picker needs delegate can respond messages         [imagepickercontroller setdelegate:self];     }     // place image picker on screen     [self presentmodalviewcontroller:imagepickercontroller animated:yes]; }  - (void)imagepickercontroller:(uiimagepickercontroller *)picker didfinishpickingmediawithinfo:(nsdictionary *)info {     uiimage *image = [info objectforkey:uiimagepickercontrolleroriginalimage];      image = [imagehelpers imagewithimage:image scaledtosize:cgsizemake(480, 640)];      [imageview setimage:image];      [self dismissmodalviewcontrolleranimated:yes]; } 

when use camera roll works great, if use actual camera image view black. why that?

do need save camera roll before use in image view?

ok. found solution myself.

i had dismiss modal view first...

- (void)imagepickercontroller:(uiimagepickercontroller *)picker didfinishpickingmediawithinfo:(nsdictionary *)info {      [self dismissmodalviewcontrolleranimated:yes]; //do first!!     uiimage *image = [info objectforkey:uiimagepickercontrolleroriginalimage];      image = [imagehelpers imagewithimage:image scaledtosize:cgsizemake(480, 640)];      [imageview setimage:image];   }