UIscrollView Paging and Zooming images in swift - ios

Question

Having a image array(Download from server) which i want to show in scrollview with paging and zooming enable but i didn't find any solution. I am searching a lot but i didn't get any solution.
Any help is really appreciating.
Thanks!
In MainController
var mainScrollView: UIScrollView!
override func viewDidLoad() {
super.viewDidLoad()
var x:CGFloat = 0
mainScrollView = UIScrollView(frame: view.bounds)
mainScrollView.pagingEnabled = true
let images=["image.png","photo.jpg","3.png"]
for var i = 0; i < images.count; i++
{
let imageView = UIImageView(image: UIImage(named: images[i]))
let scrollView = SlideShow(image: imageView, scrollFrame: CGRectMake(x, view.bounds.origin.y, view.bounds.width, view.bounds.height))
x = x + UIScreen.mainScreen().bounds.size.width
mainScrollView.addSubview(scrollView)
}
mainScrollView.contentSize=CGSizeMake(x, self.mainScrollView.frame.size.height);
mainScrollView.contentOffset=CGPointMake(0, 0);
view.addSubview(mainScrollView)
// Do any additional setup after loading the view.
}
In SubClass
public class SlideShow: UIScrollView, UIScrollViewDelegate {
public var imageView = UIImageView()
// MARK: - Life cycle
init(image: UIImageView, scrollFrame: CGRect) {
super.init(frame: scrollFrame)
//image.setToImageView(imageView)
imageView = image
imageView.clipsToBounds = true
imageView.userInteractionEnabled = true
// UIScrollView(frame: bounds)
delegate = self
showsVerticalScrollIndicator = false
showsHorizontalScrollIndicator = false
backgroundColor = UIColor.blackColor()
// contentSize = imageView.bounds.size
// autoresizingMask = [.FlexibleWidth, .FlexibleHeight]
contentOffset = CGPoint(x: 1000, y: 450)
addSubview(imageView)
// setZoomScale()
setupGestureRecognizer()
}
func setupGestureRecognizer() {
let doubleTap = UITapGestureRecognizer(target: self, action: "handleDoubleTap:")
doubleTap.numberOfTapsRequired = 2
addGestureRecognizer(doubleTap)
}
func handleDoubleTap(recognizer: UITapGestureRecognizer) {
if (zoomScale > minimumZoomScale) {
setZoomScale(minimumZoomScale, animated: true)
} else {
setZoomScale(maximumZoomScale, animated: true)
}
}
required public init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override public func layoutSubviews() {
setZoomScale()
//setZoomScale(minimumZoomScale, animated: false)
}
public func viewForZoomingInScrollView(scrollView: UIScrollView) -> UIView? {
return imageView
}
func setZoomScale() {
let imageViewSize = imageView.bounds.size
let scrollViewSize = bounds.size
let widthScale = scrollViewSize.width / imageViewSize.width
let heightScale = scrollViewSize.height / imageViewSize.height
minimumZoomScale = min(widthScale, heightScale)
zoomScale = 1.0
}
public func scrollViewDidZoom(scrollView: UIScrollView) {
let imageViewSize = imageView.frame.size
let scrollViewSize = bounds.size
let verticalPadding = imageViewSize.height < scrollViewSize.height ? (scrollViewSize.height - imageViewSize.height) / 2 : 0
let horizontalPadding = imageViewSize.width < scrollViewSize.width ? (scrollViewSize.width - imageViewSize.width) / 2 : 0
scrollView.contentInset = UIEdgeInsets(top: verticalPadding, left: horizontalPadding, bottom: verticalPadding, right: horizontalPadding)
}
}

Answer 1

Solution 1 :- Agrume Library with load photo url.
There are multiple ways you can use the image viewer (and the included Example project shows them all).
This one is best library for that.
Solution 2 :-
This library provide multiple images and zoom also.