Swift 2 how to expand and collapse a view? - swift2

Question

I have scrollView in which if there is no data, I need to hide (collapse the space occupied by it) so that the lower view can come upwards.
I tried this code with no luck. Please help me.
if(dataForScroll==0){
var newFrame:CGRect = self.myScroll.frame;
newFrame.size.height = 0;
self.myScroll.frame = newFrame
}

Answer 1

A simple example with Swift 3 version, i think it might be solves your problem. Let me know if have any queries
#IBOutlet var mainScrollView: UIScrollView!
#IBOutlet var view1: UIView!
#IBOutlet var view2: UIView!
#IBOutlet var view3: UIView!
var data1 = NSArray()
var data2 = NSArray()
var data3 = NSArray()
func setFrame()
{
// data = Something you need to get
if data1.count == 0
{
self.view1.frame.size.height = 0
}
else
{
// return its actual height you need
}
if data2.count == 0
{
self.view2.frame.size.height = 0
}
else
{
// return its actual height you need
}
if data3.count == 0
{
self.view3.frame.size.height = 0
}
else
{
// return its actual height you need
}
var frame = self.view1.frame
frame.origin.y = 5
self.view1.frame = frame
frame = self.view2.frame
frame.origin.y = self.view1.frame.origin.y + self.view1.frame.size.height + 5
self.view2.frame = frame
frame = self.view3.frame
frame.origin.y = self.view2.frame.origin.y + self.view2.frame.size.height + 5
self.view3.frame = frame
var scrollHeight:CGFloat = 0.0
var contentRect:CGRect = CGRect.zero
for views in self.mainScrollView.subviews
{
let subView:UIView = views
contentRect = contentRect.union(subView.frame)
print(subView.frame.size.height)
scrollHeight = scrollHeight + subView.frame.size.height
}
self.mainScrollView.contentSize = CGSize(width: UIScreen.main.bounds.width, height: scrollHeight + 20) // the "+ 20" reamains the spaces between the views, you can change as per your need
}