iphone - Zoom only a selected subview from the UIScrollView -

i adding many uiimageview's uiscrollview,with paging enabled.i need zoom image have tapped zoom,rather zooming entire scrollview.also zooming particular image doesnot scale other subviews.

- (void)loadscrollviewwithimages {  scrollview.contentsize = cgsizemake(self.view.bounds.size.width * imagelist.count, self.view.bounds.size.height); scrollview.pagingenabled = yes; uiview *mainview = [[uiview alloc] initwithframe:self.view.bounds];  cgfloat xpos = 0.0; (uiview *subview in scrollview.subviews) {     [subview removefromsuperview]; }  int = 0;  (nsdictionary *imagedetails in self.imagelist) {      uiimageview *imageview = [[uiimageview alloc] initwithframe:cgrectmake(xpos, 0.0, self.view.bounds.size.width, self.view.frame.size.height)];     imageview.contentmode = uiviewcontentmodescaleaspectfill;     [imageview setclipstobounds:yes];     [mainview addsubview:imageview];     xpos += self.view.bounds.size.width;      [imageview setimagewithurl:[nsurl urlwithstring:[imagedetails objectforkey:@"media_path"]]];      [self.imageviewarray addobject:imageview];      if(self.selectedimageindex == i) {         self.selectedimageview = imageview;     }     i++; } [mainview setframe:cgrectmake(mainview.frame.origin.x, mainview.frame.origin.x,self.view.bounds.size.width * imagelist.count, self.view.bounds.size.height)]; [scrollview addsubview:mainview]; 

}

i wanted zoom selected index,but other subviews add screen no scaling.

- (uiview *)viewforzoominginscrollview:(uiscrollview *)scrollview { return [[[scrollview.subviews objectatindex:0] subviews] objectatindex:0] ;; 

}

for implementing have take main scrollview have taken , instead of displaying imageview in scrollview have take scrollview , display image , when user tries zoom image selected scrollview gets scrolled.