xcode - How to add overlay to image picker in iOS -

i trying add overlay image taken imagepicker such frame, shown during snap taking. trying use following code:

self.picker = [[uiimagepickercontroller alloc] init]; self.picker.sourcetype = uiimagepickercontrollersourcetypecamera; self.picker.cameracapturemode = uiimagepickercontrollercameracapturemodephoto; self.picker.cameradevice = uiimagepickercontrollercameradevicerear; self.picker.showscameracontrols = no; self.picker.navigationbarhidden = yes; self.picker.toolbarhidden = yes; self.picker.wantsfullscreenlayout = yes;  // insert overlay self.overlay = [[overlayviewcontroller alloc] initwithnibname:@"overlay" bundle:nil]; self.overlay.pickerreference = self.picker; self.picker.cameraoverlayview = self.overlay.view; self.picker.delegate = self.overlay;  [self presentmodalviewcontroller:self.picker animated:no]; 

but helps when changing image picker skin. how can add , process overlay snapshot?

if need merge picture taken uiimageview contains image, here's useful snippet:

yourfile.h:

uiimage *combinedimage; 

yourfile.m:

-(void)savepicture { // call method ibaction button          // crop combined image taken picture         cgrect rect = [_imagepreview bounds];         uigraphicsbeginimagecontextwithoptions(rect.size,yes,0.0f);        // render both images, captured 1 camera , uiimageview on picture     [__mycapturedimage.layer renderincontext:uigraphicsgetcurrentcontext()];     [_overlayimageview.layer renderincontext:uigraphicsgetcurrentcontext()];          combinedimage = uigraphicsgetimagefromcurrentimagecontext();         uigraphicsendimagecontext();          _mycapturedimage.image = combinedimage;     // automatically save image photo album (if want so)     uiimagewritetosavedphotosalbum(combinedimage, nil, nil, nil);  } 

hope helps!

ps: have made nice template processes overlays images (which frames around images) here: http://codecanyon.net/item/picshape-frame-image-editor-full-app-template/7852895?ref=fvimagination

cheers!