iPhone: How to remove all objects from a UIScrollView - iphone

Question

Basically I want to remove all objects from a UIScrollView and I haven't yet found a solution to it because a simple "removeAllObjects" command doesn't work. Does anyone have an idea how to do it?

Answer 1

Even easier:
[[scrollView subviews] makeObjectsPerformSelector:#selector(removeFromSuperview)];

Answer 2

The easiest way:
for(UIView *subview in [scrollView subviews]) {
[subview removeFromSuperview];
}

Answer 3

Two solutions would be, without removing the scrollbars:
Add a tag to all of your subviews, remove them by using those tags.
Implementation:
Place this above your class
#define XPScrollViewSubviewStartTag 100
When you add the objects
for(NSInteger = 0;i<[viewArray count];i++){
UIView* view = [viewArray objectAtIndex:i];
view.tag = XPScrollViewSubviewStartTag + i;
[scrollView addSubview:view];
}
When you later want to delete the views use
for(UIView* view in [scrollView subviews]){
if(view.tag >= XPScrollViewSubviewStartTag)
[view removeFromSuperview];
}
Create a custom UIView class
When you want to remove the views
for(id view in [scrollView subviews]){
if(![view isKindOfClass:[CustomView class]])
continue;
//not necessary, but just to make things understandable
CustomView* customView = (CustomView*)view;
[customView removeFromSuperview];
}

Answer 4

Oritm's solution is nice, but if you don't want to bother using tags, you can manually remove which views you want to remove from the scrollview. This will assume that you know which view to remove. For example, my scrollview only has UILabels so when I run the following:
// This will remove the scrollview but the scrollbars will remain
for (UIView *subview in [self.detailsExpander.scrollView subviews]) {
if ([NSStringFromClass([subview class]) isEqualToString:#"UILabel"])
[subview removeFromSuperview];
}
This will only remove all the labels but keep the scrollbars (which are image views). Note: this won't work if you want to keep specific image views while at the same time you want to keep the scrollbars.