ios - The property frame of UIViewController's view doesn't work while using a single subview under UIScrollView -

before using uiscrollview's zoom feature, fine. code bellow:

 uiscrollview* scrollview = [[uiscrollview alloc]init];    for(int i=0; < foodintrocount; ++i) {         uiimage* image = [uiimage imagenamed:@"7_1.jpg"];         uiimageview * imgview = [[uiimageview alloc]initwithimage:image];         imgview.frame = cgrectmake(0, height*i, width, height);         [scrollview addsubview:imgview];    }     scrollview.contentsize =  cgsizemake(width, height*(foodintrocount+1)) ;    scrollview.pagingenabled = yes;     scrollview.showsverticalscrollindicator = no;    scrollview.showshorizontalscrollindicator = no;    scrollview.bounces = no;    scrollview.delegate = self;      _foodwineviewcontroller = [[ohfoodwineviewcontroller alloc]initwithcategorydata:_fooddata];    uiview* wineview = _foodwineviewcontroller.view;    wineview.frame = cgrectmake(0, height*(foodintrocount), width, height);    [scrollview addsubview:wineview]; 

after adding zoom feature, code looks like:

uiscrollview* scrollview = [[uiscrollview alloc]init]; uiview* zoomview = [[uiview alloc]init];    for(int i=0; < foodintrocount; ++i) {         uiimage* image = [uiimage imagenamed:@"7_1.jpg"];         uiimageview * imgview = [[uiimageview alloc]initwithimage:image];         imgview.frame = cgrectmake(0, height*i, width, height);         [zoomview addsubview:imgview];    }     scrollview.contentsize =  cgsizemake(width, height*(foodintrocount+1)) ;    scrollview.pagingenabled = yes;     scrollview.showsverticalscrollindicator = no;    scrollview.showshorizontalscrollindicator = no;    scrollview.bounces = no;    scrollview.delegate = self;    scrollview.maximumzoomscale = 2.0;      _foodwineviewcontroller = [[ohfoodwineviewcontroller alloc]initwithcategorydata:_fooddata];    uiview* wineview = _foodwineviewcontroller.view;    wineview.frame = cgrectmake(0, height*(foodintrocount), width, height);    [zoomview addsubview:wineview];    [scrollview addsubview:zoomview]; 

the problem is: wineview displayed on first page, not on foodintrocount+1 page.

your code should consider previous y position , height both if want add subview 1 after vertically. code should below

imgview.frame = cgrectmake(0, height*i+y, width, height); 

the code isn't tested though, try this..