I am using scroll view which scrolling everything perfectly but i have button at the top of view for dissmissing view i want it to remain there and do not scroll in swift .
Add first UIScrollView and then UIButton to self.view.
Add button outside scrollview content like overlay.
Try this solution:
class TmpVC: UIViewController, UIScrollViewDelegate {
#IBOutlet var scoll : UIScrollView!
#IBOutlet var btn : UIButton!
var btnPoint : CGPoint!
override func viewDidLoad() {
super.viewDidLoad()
scoll.contentSize = CGSize(width: 320, height: 600)
scoll.delegate = self
btnPoint = btn.frame.origin
}
func scrollViewDidScroll(_ scrollView: UIScrollView) {
btn.frame.origin = CGPoint(x: btnPoint.x, y: btnPoint.y + scrollView.contentOffset.y)
}
deinit {
print("deinit Tmpvc")
}
}
Related
I would like to play a sound file when a new page comes on the screen.
So far I did that to have the pageControler working with an array of images.
Can someone tell me where I have to put my code in order to play an array of sound? So that the sound1 will be played when the image1 comes on the screen.
import UIKit
class ViewController: UIViewController, UIScrollViewDelegate {
#IBOutlet weak var pageControl: UIPageControl!
#IBOutlet weak var scrollView: UIScrollView!
var images: [String] = ["1", "2", "3", "4", "5"]
var frame = CGRect(x:0,y:0, width:0, height:0)
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
pageControl.numberOfPages = images.count
for index in 0..<images.count {
frame.origin.x = scrollView.frame.size.width * CGFloat(index)
frame.size = scrollView.frame.size
let imgView = UIImageView(frame: frame)
imgView.image = UIImage(named: images[index])
self.scrollView.addSubview(imgView)
}
scrollView.contentSize = CGSize(width:(scrollView.frame.size.width * CGFloat(images.count)), height: scrollView.frame.size.height)
scrollView.delegate = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
var pageNumber = scrollView.contentOffset.x / scrollView.frame.size.width
pageControl.currentPage = Int(pageNumber)
}
}
I don't see a direct way to get called when the selected page changes. You could add code in your page view controller's setViewControllers(_:direction:animated:completion:) method that figures out which page is active and plays the appropriate sound.
If you use a page control you could probably also subclass UIPageControl and use a didSet on the currentPage property to figure out which sound to play.
Edit:
Just add a new file, make it a Cocoa touch class, and make it a subclass of UIPageControl. Name it CustomPageControl. Then your implementation can be as simple as this:
import UIKit
class CustomPageControl: UIPageControl {
override var currentPage: Int {
didSet {
//Your code to play sounds based on selected index could go
//here, or broadcast a notification that your view controller
//would listen for
print("New page index = \(currentPage)")
}
}
}
Then just select the page control on your UIPageViewController, select the "Identity Inspector", and change the class of the page control to your custom CustomPageControl class. Once you've done that, whenever your page index changes, the didSet method above will be called.
import UIKit
class ContactViewController: UIViewController {
#IBOutlet weak var scrollView: UIScrollView!
override func viewDidLoad() {
super.viewDidLoad()
self.view.addSubview(scrollView)
}
override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
scrollView.contentSize = CGSize(width: 375, height: 800)
}
// Do any additional setup after loading the view.
}
For the past 2 days I have been trying to get my scroll view to work and its not working. I am very very new to swift and have no idea what to do. The app itself will run however it will simply not scroll up and down !!!! help please i am desperate !!!!
Hi guys I’m a total newbie in Xcode, i have this view controller that has a scrollView of height 2000. I want that when it loads, it starts at the bottom of the scrollView.
I have read that setContentOffset should help me with this but i just can’t make it work. I don’t know what I’m doing work. Any help will be really appreciated.
Thanks,
import UIKit
class Pantalla2: UIViewController {
#IBOutlet weak var scrollView: UIScrollView!
override func viewDidLoad() {
super.viewDidLoad()
let off = CGPointMake(0, 2000)
self.scrollView.setContentOffset(off, animated: true)
}
Try this
!
override func viewDidLoad() {
self.scrollview.contentOffset = CGPoint(x: 0, y: 2000)
}
I'm making an application where I need an x amount of custom UIView and place them in a scrollView. The layout of the scrollView and the UIView xib are set with AutoLayout. The result I'm getting now is this:
First View is well centred in ScrollView
Second View is wrong and has a lot of space in between
See my VC Code under here.
let sponsors = Sponsors.createSponsors() <-- Array
override func viewDidLoad() {
super.viewDidLoad()
configureSponsors()
}
//MARK: Load the AddView in ScrollView
func configureSponsors() {
self.scrollView.contentSize = CGSizeMake(CGFloat(sponsors.count) * self.scrollView.frame.size.width, self.scrollView.frame.size.height)
for sponsor in sponsors {
numberOfItems++
let addView = NSBundle.mainBundle().loadNibNamed("AddView", owner: self, options: nil).last as! AddView
addView.addDataToAddView(sponsor)
addView.frame = CGRectMake(CGFloat(numberOfItems - 1) * scrollView.frame.size.width, 0, scrollView.frame.size.width, scrollView.frame.size.height)
self.scrollView.addSubview(addView)
}
}
And here is my UIView code:
//MARK: Outlets
#IBOutlet weak var backgroundImageView: UIImageView!
#IBOutlet weak var sponsorTitle: UILabel!
#IBOutlet weak var sponsorLogo: UIImageView!
#IBOutlet weak var sponsorSubtitle: UILabel!
#IBOutlet weak var roundView: UIView!
#IBOutlet weak var playMusicButton: UIButton!
//MARK: Properties
var cornerRadius: CGFloat = 3.0
func addDataToAddView(sponsor: Sponsors) {
backgroundImageView.image = UIImage(named: sponsor.backgroundImage)
sponsorLogo.image = UIImage(named: sponsor.logoImage)
sponsorTitle.text = sponsor.title
sponsorSubtitle.text = sponsor.subTitle
}
override func layoutSubviews() {
roundView.layer.cornerRadius = roundView.frame.size.width / 2
roundView.alpha = 0.7
roundView.clipsToBounds = true
}
//MARK: PlayVideo
#IBAction func playVideo(sender: UIButton) {
//play music
}
I've already searched for the same problems. I found out that I have to use the Pure Auto Layout Approach. Should that mean I need to programatically set the constraints for the UIView?
Many thanks,
Dax
Update:
Pictures for scrollView setup:
You should not perform layout calculations in viewDidLoad as frames are not set correctly till then.
Correct place to do this is either viewWillLayoutSubviews or viewDidLayoutSubviews as you will get the correct frame data when these functions are called
I have two side by side text views. How can I link them so that if one is scrolled down other automatically scrolls the same as first one in swift 2.
Set your viewController conforms to UITextViewDelegate,then set textView delegate to self,then in scrollViewDidScroll sync both contentOffSet
For example
Gif
Code
class ViewController: UIViewController,UITextViewDelegate {
#IBOutlet weak var textview2: UITextView!
#IBOutlet weak var textview1: UITextView!
override func viewDidLoad() {
super.viewDidLoad()
textview1.delegate = self
textview2.delegate = self
// Do any additional setup after loading the view, typically from a nib.
}
func scrollViewDidScroll(scrollView: UIScrollView) {
if scrollView == textview1{
textview2.contentOffset = textview1.contentOffset
}else{
textview1.contentOffset = textview2.contentOffset
}
}
}