Why does the UIScrollView automatically change contentOffset?

Question

Question Describe :

My App have 2 tabbar item . In the first Item , the viewcontroller have a view (the name is zpContainerView) ; a scrollView, it's zpContainerView's subView ; the scrollView add 3 subviews ;

Now , i touch the iphone's screen and change the scrollView's contentOffset ,

I click the second tabbar item , and soon after I click first tabbar item .

Question : Why does the scrollView automatically the contentOffset , why the contentOffset is CGPointZero ?

Please tell me why , and help me solve the question , thanks .

I think you'd better upload a image for your views' layout. Cannot understand question easily. :( — Harrison Xi, Jan 15 '16 at 09:55
I find that If i click the second tabbar item , the scrollView did automatically call scrollView delegate and invoke [ scrollViewDidScroll: ] delegate method . I don't know why had happened ? — user5465320, Jan 16 '16 at 02:02

score 0 · Accepted Answer · answered Jan 17 '16 at 14:14

0

I have resolved the problem 。

the ScrollView's class is not right .

Please look this : " UIScrollView * scrollView = [[UITableView alloc] init] ; "

answered Jan 17 '16 at 14:14

user5465320

719
2
7
15

Why does the UIScrollView automatically change contentOffset?

1 Answers1