Clear content of UIScrollView

Question

I have an iPhone application that uses a timer and at every time interval it creates some UILabel controls and adds them into a UIScrollView.

What I want to do is to clear the UIScrollView every time interval before it puts the UILabel controls into the UIScrollView.

How can I clear the contents of the UIScrollView?

score 46 · Accepted Answer · answered Jun 17 '10 at 15:08

46

for (UIView *subview in scrollView.subviews) {
  [subview removeFromSuperview];
}

answered Jun 17 '10 at 15:08

21

or in one line: [scrollView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)]; – Vladimir Jun 17 '10 at 15:14
This answer is wrong because the scroll indicators are also subviews of the scrollView. – trapper Jul 11 '16 at 07:38
I know this is old but I am a bit confused. I was experiencing a problem when adding/removing content dynamically to the uiscrollview it was mixing up old with new content and I was looping thru the subviews and removing them all with for (int i = 0; i < scrollView.subviews.count; i++) instead of this. Isn't it the same in the end? – CJ_COIMBRA Feb 28 '17 at 12:59

score 15 · Answer 2 · edited May 23 '17 at 11:54

You will also remove the scrollbar with the above solution. To solve this, you may ask whether the subview about to be removed is a UIImageView instance. Obviously, you will need to do more checks if you happen to have your own UIImageViews in the scroll view.

for (UIView *subview in scrollView.subviews) {
  if(![subview isKindOfClass:[UIImageView class]])
    [subview removeFromSuperview];
}

score 2 · Answer 3 · answered May 01 '12 at 17:17

2

I typically go with a one liner like this: in case you're interested..

while(scrollView.subviews.count > 0) [[scrollView.subviews objectAtIndex:0] removeFromSuperview];

answered May 01 '12 at 17:17

Jacksonkr

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score 0 · Answer 4 · edited Oct 18 '13 at 12:34

0

In one line

[_ui_scroll.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];

edited Oct 18 '13 at 12:34

Sirko

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answered Oct 18 '13 at 12:17

isanjosgon

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score 0 · Answer 5 · answered Jan 15 '16 at 20:58

0

SWIFT:

 for  subview in self.scrollView.subviews
        {
             subview.removeFromSuperview()
        }

answered Jan 15 '16 at 20:58

Yogesh Lolusare

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score 0 · Answer 6 · edited Oct 28 '12 at 01:25

0

Its Very simple just write this code inside your loop where dynamic structure is creating and changing it's content frequently.

[subview removeFromSuperview];

edited Oct 28 '12 at 01:25

Kjuly

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answered Mar 23 '12 at 05:07

Vivek Negi

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Clear content of UIScrollView

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