How to display an activity indicator with text on iOS 8 with Swift

Question

I wanna show  programmatically  an activity indicator with text  like the one in the Photos app  after editing and saving a picture   How can I do this

User · Answer

For Swift 3    Usage  class LoginTVC  UITableViewController       var loadingView   LoadingView       override func viewDidLoad             super viewDidLoad               CASE 1  To Show loadingView on load          loadingView   LoadingView uiView  view  message   Sending you verification code                 CASE 2  To show loadingView on click of a button       IBAction func showLoadingView   sender  UIButton            if let loaderView   loadingView     If loadingView already exists             if loaderView isHidden                     loaderView show       To show activity indicator                                 else              loadingView   LoadingView uiView  view  message   Sending you verification code                              CASE 3  To hide LoadingView on click of a button       IBAction func hideLoadingView   sender  UIButton            if let loaderView   loadingView     If loadingView already exists              self loadingView hide                          LoadingView Class  class LoadingView        let uiView              UIView     let message             String     let messageLabel        UILabel        let loadingSV           UIStackView       let loadingView         UIView       let activityIndicator  UIActivityIndicatorView   UIActivityIndicatorView activityIndicatorStyle  UIActivityIndicatorViewStyle gray       init uiView  UIView  message  String            self uiView         uiView         self message        message         self setup              func setup            let viewWidth     uiView bounds width         let viewHeight    uiView bounds height             Configuring the message label         messageLabel text               message         messageLabel textColor          UIColor darkGray         messageLabel textAlignment       center         messageLabel numberOfLines      3         messageLabel lineBreakMode       byWordWrapping             Creating stackView to center and align Label and Activity Indicator         loadingSV axis             vertical         loadingSV distribution     equalSpacing         loadingSV alignment        center         loadingSV addArrangedSubview activityIndicator          loadingSV addArrangedSubview messageLabel              Creating loadingView  this acts as a background for label and activityIndicator         loadingView frame             uiView frame         loadingView center            uiView center         loadingView backgroundColor   UIColor darkGray withAlphaComponent 0 3          loadingView clipsToBounds     true             Disabling auto constraints         loadingSV translatesAutoresizingMaskIntoConstraints   false             Adding subviews         loadingView addSubview loadingSV          uiView addSubview loadingView          activityIndicator startAnimating               Views dictionary         let views                  loadingSV   loadingSV                       Constraints for loadingSV         uiView addConstraints NSLayoutConstraint constraints withVisualFormat   H  - loadingSV 300  -    options      metrics  nil  views  views           uiView addConstraints NSLayoutConstraint constraints withVisualFormat   V  -  viewHeight   3 - loadingSV 50  -    options      metrics  nil  views  views                 Call this method to hide loadingView     func show             loadingView isHidden   false               Call this method to show loadingView     func hide            loadingView isHidden   true               Call this method to check if loading view already exists     func isHidden   - gt  Bool          if loadingView isHidden    false              return false                   else              return true

User · Answer

This code work in SWIFT 2 0   Must Declare a variable for initialize UIActivityIndicatorView   let actInd  UIActivityIndicatorView   UIActivityIndicatorView      After initialize put this code in your controller   actInd center   ImageView center actInd activityIndicatorViewStyle   UIActivityIndicatorViewStyle WhiteLarge view addSubview actInd  actInd startAnimating     after your download process complete then hide a animation   self actInd stopAnimating

User · Answer

With auto width and theme support also detects rotate while busy  Swift 3 version   Use it like below   var progressView  ProgressView  override func viewDidAppear   animated  Bool        super viewDidAppear animated      self progressView   ProgressView message   Work in progress                                             theme   dark                                           isModal  true      IBAction func onPause   sender  AnyObject        self progressView show             IBAction func onResume   sender  AnyObject        self progressView hide              ProgressView swift  import UIKit  class ProgressView  UIView        enum Theme           case light         case dark            var theme  Theme     var container  UIStackView     var activityIndicator  UIActivityIndicatorView     var label  UILabel     var glass  UIView       private var message  String     private var isModal  Bool      init message  String  theme  theme  isModal  Bool               Init         self message   message         self theme   theme         self isModal   isModal          self container   UIStackView           self activityIndicator   UIActivityIndicatorView           self label   UILabel           self glass   UIView               Get proper width by text message         let fontName   self label font fontName         let fontSize   self label font pointSize         if let font   UIFont name  fontName  size  fontSize                let fontAttributes    NSFontAttributeName  font              let size    message as NSString  size attributes  fontAttributes              super init frame  CGRect x  0  y  0  width  size width   50  height  50             else               super init frame  CGRect x  0  y  0  width  200  height  50                         Detect rotation         NotificationCenter default addObserver self  selector   selector onRotate   name  NSNotification Name UIDeviceOrientationDidChange  object  nil              Style         self layer cornerRadius   3         if  self theme     dark                self backgroundColor    darkGray           else               self backgroundColor    lightGray                       Label         if self theme     dark               self label textColor    white          else              self label textColor    black                   self label text   self message            Container         self container frame   self frame         self container spacing   5         self container layoutMargins   UIEdgeInsets top  5  left  5  bottom  5  right  5          self container isLayoutMarginsRelativeArrangement   true            Activity indicator         if  self theme     dark                self activityIndicator   UIActivityIndicatorView activityIndicatorStyle   whiteLarge              self activityIndicator color    white           else               self activityIndicator   UIActivityIndicatorView activityIndicatorStyle  whiteLarge              self activityIndicator color    black                   self activityIndicator startAnimating              Add them to container             First glass         if let superview   UIApplication shared keyWindow               if  self isModal                       glass                 self glass frame   superview frame                  if  self theme     dark                        self glass backgroundColor   UIColor black withAlphaComponent 0 5                    else                       self glass backgroundColor   UIColor white withAlphaComponent 0 5                                    superview addSubview glass                                     Then activity indicator and label         container addArrangedSubview self activityIndicator          container addArrangedSubview self label             Last attach it to container  StackView          self addSubview container          if let superview   UIApplication shared keyWindow               self center   superview center             superview addSubview self                      Do not show until show   is called         self hide              required init coder  NSCoder            self theme    dark         self Message    Not set           self isModal   true         self container   UIStackView           self activityIndicator   UIActivityIndicatorView           self label   UILabel           self glass   UIView           super init coder  coder              func onRotate             if let superview   self superview               self glass frame   superview frame             self center   superview center               superview addSubview self                       public func show             self glass isHidden   false         self isHidden   false            public func hide             self glass isHidden   true         self isHidden   true

User · Answer

simple activity controller class      class ActivityIndicator  UIVisualEffectView     let activityIndictor  UIActivityIndicatorView   UIActivityIndicatorView activityIndicatorStyle  UIActivityIndicatorViewStyle WhiteLarge  let label  UILabel   UILabel   let blurEffect   UIBlurEffect style   Dark  let vibrancyView  UIVisualEffectView  init          self vibrancyView   UIVisualEffectView effect  UIVibrancyEffect forBlurEffect  blurEffect       super init effect  blurEffect      self setup      required init  coder aDecoder  NSCoder         self vibrancyView   UIVisualEffectView effect  UIVibrancyEffect forBlurEffect  blurEffect       super init coder  aDecoder      self setup      func setup          contentView addSubview vibrancyView      vibrancyView contentView addSubview activityIndictor      activityIndictor startAnimating      override func didMoveToSuperview         super didMoveToSuperview        if let superview   self superview           let width  CGFloat   75 0         let height  CGFloat   75 0         self frame   CGRectMake superview frame size width   2 - width   2                                  superview frame height   2 - height   2                                  width                                  height          vibrancyView frame   self bounds         let activityIndicatorSize  CGFloat   40         activityIndictor frame   CGRectMake 18  height   2 - activityIndicatorSize   2                                              activityIndicatorSize                                              activityIndicatorSize          layer cornerRadius   8 0         layer masksToBounds   true           func show         self hidden   false    func hide         self hidden   true      usage  -  let activityIndicator   ActivityIndicator       self view addSubview activityIndicator    to hide  -  activityIndicator hide

User · Answer

While Esq s answer works  I ve added my own implementation which is more in line with good component architecture by separating the view into it s own class  It also uses dynamic blurring introduced in iOS 8    Here is how mine looks with an image background      The code for this is encapsulated in it s own UIView class which means you can reuse it whenever you desire   Updated for Swift 3  Usage  func viewDidLoad       super viewDidLoad         Create and add the view to the screen    let progressHUD   ProgressHUD text   Saving Photo     self view addSubview progressHUD       All done     self view backgroundColor   UIColor black     UIView Code  import UIKit  class ProgressHUD  UIVisualEffectView      var text  String        didSet         label text   text              let activityIndictor  UIActivityIndicatorView   UIActivityIndicatorView activityIndicatorStyle  UIActivityIndicatorViewStyle gray    let label  UILabel   UILabel     let blurEffect   UIBlurEffect style   light    let vibrancyView  UIVisualEffectView    init text  String        self text   text     self vibrancyView   UIVisualEffectView effect  UIVibrancyEffect blurEffect  blurEffect       super init effect  blurEffect      self setup          required init  coder aDecoder  NSCoder        self text          self vibrancyView   UIVisualEffectView effect  UIVibrancyEffect blurEffect  blurEffect       super init coder  aDecoder      self setup          func setup         contentView addSubview vibrancyView      contentView addSubview activityIndictor      contentView addSubview label      activityIndictor startAnimating          override func didMoveToSuperview         super didMoveToSuperview        if let superview   self superview          let width   superview frame size width   2 3       let height  CGFloat   50 0       self frame   CGRect x  superview frame size width   2 - width   2                        y  superview frame height   2 - height   2                        width  width                        height  height        vibrancyView frame   self bounds        let activityIndicatorSize  CGFloat   40       activityIndictor frame   CGRect x  5                                        y  height   2 - activityIndicatorSize   2                                        width  activityIndicatorSize                                        height  activityIndicatorSize         layer cornerRadius   8 0       layer masksToBounds   true       label text   text       label textAlignment   NSTextAlignment center       label frame   CGRect x  activityIndicatorSize   5                             y  0                             width  width - activityIndicatorSize - 15                             height  height        label textColor   UIColor gray       label font   UIFont boldSystemFont ofSize  16               func show         self isHidden   false        func hide         self isHidden   true         Swift 2  An example on how to use it is like this   override func viewDidLoad         super viewDidLoad           Create and add the view to the screen      let progressHUD   ProgressHUD text   Saving Photo       self view addSubview progressHUD         All done       self view backgroundColor   UIColor blackColor       Here is the UIView code   import UIKit  class ProgressHUD  UIVisualEffectView        var text  String            didSet               label text   text                     let activityIndictor  UIActivityIndicatorView   UIActivityIndicatorView activityIndicatorStyle  UIActivityIndicatorViewStyle White      let label  UILabel   UILabel       let blurEffect   UIBlurEffect style   Light      let vibrancyView  UIVisualEffectView      init text  String            self text   text         self vibrancyView   UIVisualEffectView effect  UIVibrancyEffect forBlurEffect  blurEffect           super init effect  blurEffect          self setup              required init coder aDecoder  NSCoder            self text              self vibrancyView   UIVisualEffectView effect  UIVibrancyEffect forBlurEffect  blurEffect           super init coder  aDecoder          self setup               func setup             contentView addSubview vibrancyView          vibrancyView contentView addSubview activityIndictor          vibrancyView contentView addSubview label          activityIndictor startAnimating              override func didMoveToSuperview             super didMoveToSuperview            if let superview   self superview                let width   superview frame size width   2 3             let height  CGFloat   50 0             self frame   CGRectMake superview frame size width   2 - width   2                  superview frame height   2 - height   2                  width                  height              vibrancyView frame   self bounds              let activityIndicatorSize  CGFloat   40             activityIndictor frame   CGRectMake 5  height   2 - activityIndicatorSize   2                  activityIndicatorSize                  activityIndicatorSize               layer cornerRadius   8 0             layer masksToBounds   true             label text   text             label textAlignment   NSTextAlignment Center             label frame   CGRectMake activityIndicatorSize   5  0  width - activityIndicatorSize - 15  height              label textColor   UIColor grayColor               label font   UIFont boldSystemFontOfSize 16                       func show             self hidden   false            func hide             self hidden   true           I hope this helps  please feel free to use this code wherever you need

User · Answer

In Swift 3   Declare variables which we will use   var activityIndicator   UIActivityIndicatorView   let loadingView   UIView   let loadingLabel   UILabel     Set label   view and activityIndicator  func setLoadingScreen myMsg   String        let width  CGFloat   120     let height  CGFloat   30     let x    self view frame width   2  -  width   2      let y    169   2  -  height   2    60     loadingView frame   CGRect x  x  y  y  width  width  height  height      self loadingLabel textColor   UIColor white     self loadingLabel textAlignment   NSTextAlignment center     self loadingLabel text   myMsg     self loadingLabel frame   CGRect x  0  y  0  width  160  height  30      self loadingLabel isHidden   false     self activityIndicator activityIndicatorViewStyle   UIActivityIndicatorViewStyle white     self activityIndicator frame   CGRect x  0  y  0  width  30  height  30      self activityIndicator startAnimating       loadingView addSubview self spinner      loadingView addSubview self loadingLabel      self view addSubview loadingView      Start Animation   IBAction func start animation   sender  Any        setLoadingScreen myMsg   Loading          Stop Animation   IBAction func stop animation   sender  Any        self spinner stopAnimating       UIApplication shared endIgnoringInteractionEvents       self loadingLabel isHidden   true

User · Answer

For Swift 5 Indicator with label inside WKWebview var strLabel   UILabel      let effectView   UIVisualEffectView effect  UIBlurEffect style   dark       let loadingTextLabel   UILabel            IBOutlet var indicator  UIActivityIndicatorView       IBOutlet var webView  WKWebView           var refController UIRefreshControl   UIRefreshControl                 override func viewDidLoad             webView   WKWebView frame  CGRect zero          webView navigationDelegate   self         webView uiDelegate   self as  WKUIDelegate                  let preferences   WKPreferences           preferences javaScriptEnabled   true         let configuration   WKWebViewConfiguration           configuration preferences   preferences                          webView allowsBackForwardNavigationGestures   true                  webView load URLRequest url  URL string   quot https   www google com quot              setBackground                                 func setBackground             view addSubview webView          webView translatesAutoresizingMaskIntoConstraints   false         webView topAnchor constraint equalTo  view topAnchor  isActive   true         webView bottomAnchor constraint equalTo  view bottomAnchor  isActive   true         webView leadingAnchor constraint equalTo  view leadingAnchor  isActive   true         webView trailingAnchor constraint equalTo  view trailingAnchor  isActive   true                func showActivityIndicator show  Bool            if show                                         strLabel   UILabel frame  CGRect x  55  y  0  width  400  height  66               strLabel text    quot Please Wait  Checking Internet Connection    quot              strLabel font   UIFont name   quot Avenir Light quot   size  12                                       strLabel textColor   UIColor white  0 9  alpha  0 7                          effectView frame   CGRect x  view frame midX - strLabel frame width 2  y  view frame midY - strLabel frame height 2   width  300  height  66              effectView layer cornerRadius   15             effectView layer masksToBounds   true             indicator   UIActivityIndicatorView style   white              indicator frame   CGRect x  0  y  0  width  66  height  66              indicator startAnimating               effectView contentView addSubview indicator              effectView contentView addSubview strLabel              indicator transform   CGAffineTransform scaleX  1 4  y  1 4               effectView center   webView center             view addSubview effectView                                      else               strLabel removeFromSuperview                effectView removeFromSuperview               indicator removeFromSuperview               indicator stopAnimating

User · Answer

Based o my previous answer  here is a more elegant solution with a custom class   First define this custom class   import UIKit import Foundation  class ActivityIndicatorView       var view  UIView   var activityIndicator  UIActivityIndicatorView   var title  String   init title  String  center  CGPoint  width  CGFloat   200 0  height  CGFloat   50 0        self title   title      let x   center x - width 2 0     let y   center y - height 2 0      self view   UIView frame  CGRect x  x  y  y  width  width  height  height       self view backgroundColor   UIColor red  255 0 255 0  green  204 0 255 0  blue  51 0 255 0  alpha  0 5      self view layer cornerRadius   10      self activityIndicator   UIActivityIndicatorView frame  CGRect x  0  y  0  width  50  height  50       self activityIndicator color   UIColor blackColor       self activityIndicator hidesWhenStopped   false      let titleLabel   UILabel frame  CGRect x  60  y  0  width  200  height  50       titleLabel text   title     titleLabel textColor   UIColor blackColor        self view addSubview self activityIndicator      self view addSubview titleLabel     func getViewActivityIndicator   - gt  UIView       return self view    func startAnimating         self activityIndicator startAnimating       UIApplication sharedApplication   beginIgnoringInteractionEvents      func stopAnimating         self activityIndicator stopAnimating       UIApplication sharedApplication   endIgnoringInteractionEvents        self view removeFromSuperview       end     Now on your UIViewController class   var activityIndicatorView  ActivityIndicatorView   override func viewDidLoad         super viewDidLoad        self activityIndicatorView   ActivityIndicatorView title   Processing      center  self view center      self view addSubview self activityIndicatorView getViewActivityIndicator        func doSomething         self activityIndicatorView startAnimating       UIApplication sharedApplication   beginIgnoringInteractionEvents          do something here that will taking time      self activityIndicatorView stopAnimating

User · Answer

import UIKit  class ViewControllerUtils        let containerView  UIView              let view   UIView           view translatesAutoresizingMaskIntoConstraints   false         view backgroundColor   UIColor white  0  alpha  0 3          return view              let loadingView  UIView              let view   UIView           view translatesAutoresizingMaskIntoConstraints   false         view backgroundColor   UIColor white  0  alpha  0 7          view clipsToBounds   true         view layer cornerRadius   10         return view              let activityIndicatorView  UIActivityIndicatorView              let aiv   UIActivityIndicatorView           aiv translatesAutoresizingMaskIntoConstraints   false         aiv style   UIActivityIndicatorView Style whiteLarge         return aiv              let loadingLabel  UILabel              let label   UILabel           label translatesAutoresizingMaskIntoConstraints   false         label text    Loading             label textAlignment    center         label textColor    white         label font    systemFont ofSize  15  weight  UIFont Weight medium          return label              func showLoader              guard let window   UIApplication shared keyWindow else   return            window addSubview containerView          containerView addSubview loadingView          loadingView addSubview activityIndicatorView          loadingView addSubview loadingLabel           containerView leftAnchor constraint equalTo  window leftAnchor  isActive   true         containerView rightAnchor constraint equalTo  window rightAnchor  isActive   true         containerView topAnchor constraint equalTo  window topAnchor  isActive   true         containerView bottomAnchor constraint equalTo  window bottomAnchor  isActive   true          loadingView centerXAnchor constraint equalTo  window centerXAnchor  isActive   true         loadingView centerYAnchor constraint equalTo  window centerYAnchor  isActive   true         loadingView widthAnchor constraint equalToConstant  120  isActive   true         loadingView heightAnchor constraint equalToConstant  120  isActive   true          activityIndicatorView centerXAnchor constraint equalTo  window centerXAnchor  isActive   true         activityIndicatorView centerYAnchor constraint equalTo  window centerYAnchor  isActive   true         activityIndicatorView widthAnchor constraint equalToConstant  60  isActive   true         activityIndicatorView heightAnchor constraint equalToConstant  60  isActive   true          loadingLabel leftAnchor constraint equalTo  loadingView leftAnchor  isActive   true         loadingLabel rightAnchor constraint equalTo  loadingView rightAnchor  isActive   true         loadingLabel bottomAnchor constraint equalTo  loadingView bottomAnchor  isActive   true         loadingLabel heightAnchor constraint equalToConstant  40  isActive   true          DispatchQueue main async                self activityIndicatorView startAnimating                        func hideLoader              DispatchQueue main async                self activityIndicatorView stopAnimating               self activityIndicatorView removeFromSuperview               self loadingLabel removeFromSuperview               self loadingView removeFromSuperview               self containerView removeFromSuperview                           In order to show the activity indicator  call the function from your view controller    let viewControllerUtils   ViewControllerUtils      viewControllerUtils showLoader         In order to hide the activity indicator  call the function from your view controller    viewControllerUtils hideLoader    class ViewControllerUtils2        var container  UIView   UIView       var loadingView  UIView   UIView       var activityIndicator  UIActivityIndicatorView   UIActivityIndicatorView       let loadingLabel   UILabel        func showLoader   uiView  UIView             container frame   uiView frame         container center   uiView center         container backgroundColor   UIColor white  0  alpha  0 3           loadingView frame   CGRect x  0  y  0  width  120  height  120          loadingView center   uiView center         loadingView backgroundColor   UIColor white  0  alpha  0 7          loadingView clipsToBounds   true         loadingView layer cornerRadius   10          activityIndicator frame   CGRect x  0  y  0  width  60  height  60          activityIndicator style   UIActivityIndicatorView Style whiteLarge         activityIndicator center   CGPoint x  loadingView frame size width   2  y  loadingView frame size height   2           loadingLabel frame   CGRect x  0  y  80  width  120  height  40          loadingLabel text    Loading             loadingLabel textAlignment    center         loadingLabel textColor    white         loadingLabel font    systemFont ofSize  15  weight  UIFont Weight medium           uiView addSubview container          container addSubview loadingView          loadingView addSubview activityIndicator          loadingView addSubview loadingLabel           DispatchQueue main async                self activityIndicator startAnimating                        func hideLoader              DispatchQueue main async                self activityIndicator stopAnimating               self activityIndicator removeFromSuperview               self loadingLabel removeFromSuperview               self loadingView removeFromSuperview               self container removeFromSuperview

User · Answer

You can create your own  For example   Create a view with white background and rounded corners   var view   UIView frame  CGRect x  0  y  0  width  300  height  50   view backgroundColor   UIColor whiteColor   view layer cornerRadius   10   Add two subviews  a UIActivityIndicatorView and a UILabel   var wait   UIActivityIndicatorView frame  CGRect x  0  y  0  width  50  height  50   wait color   UIColor blackColor   wait hidesWhenStopped   false   var text   UILabel frame  CGRect x  60  y  0  width  200  height  50   text text    Processing      view addSubview wait  view addSubview text

User · Answer

Based on  MirekE  answer here is a code that i tested now and its working   var activityIndicator  UIActivityIndicatorView   var viewActivityIndicator  UIView   override func viewDidLoad         super viewDidLoad        let width  CGFloat   200 0     let height  CGFloat   50 0     let x   self view frame width 2 0 - width 2 0     let y   self view frame height 2 0 - height 2 0      self viewActivityIndicator   UIView frame  CGRect x  x  y  y  width  width  height  height       self viewActivityIndicator backgroundColor   UIColor red  255 0 255 0  green  204 0 255 0  blue  51 0 255 0  alpha  0 5      self viewActivityIndicator layer cornerRadius   10      self activityIndicator   UIActivityIndicatorView frame  CGRect x  0  y  0  width  50  height  50       self activityIndicator color   UIColor blackColor       self activityIndicator hidesWhenStopped   false      let titleLabel   UILabel frame  CGRect x  60  y  0  width  200  height  50       titleLabel text    Processing          self viewActivityIndicator addSubview self activityIndicator      self viewActivityIndicator addSubview titleLabel       self view addSubview self viewActivityIndicator     func doSometing         self activityIndicator startAnimating       UIApplication sharedApplication   beginIgnoringInteractionEvents          do something here that will taking time      self activityIndicator stopAnimating       UIApplication sharedApplication   endIgnoringInteractionEvents       self viewActivityIndicator removeFromSuperview

User · Answer

Heres how this code looks     Heres my drag and drop code   var boxView   UIView    override func viewDidLoad         super viewDidLoad          Do any additional setup after loading the view  typically from a nib       view backgroundColor   UIColor blackColor       addSavingPhotoView          Custom button to test this app     var button   UIButton frame  CGRect x  20  y  20  width  20  height  20       button backgroundColor   UIColor redColor       button addTarget self  action   buttonAction    forControlEvents  UIControlEvents TouchUpInside       view addSubview button     func addSavingPhotoView            You only need to adjust this frame to move it anywhere you want     boxView   UIView frame  CGRect x  view frame midX - 90  y  view frame midY - 25  width  180  height  50       boxView backgroundColor   UIColor whiteColor       boxView alpha   0 8     boxView layer cornerRadius   10        Here the spinnier is initialized     var activityView   UIActivityIndicatorView activityIndicatorStyle  UIActivityIndicatorViewStyle Gray      activityView frame   CGRect x  0  y  0  width  50  height  50      activityView startAnimating        var textLabel   UILabel frame  CGRect x  60  y  0  width  200  height  50       textLabel textColor   UIColor grayColor       textLabel text    Saving Photo       boxView addSubview activityView      boxView addSubview textLabel       view addSubview boxView     func buttonAction sender UIButton           When button is pressed it removes the boxView from screen     boxView removeFromSuperview       Here is an open source version of this  https   github com goktugyil CozyLoadingActivity

User · Answer

Xcode 9 0     Swift 4 0  import UIKit class ViewController  UIViewController  UINavigationControllerDelegate  UIImagePickerControllerDelegate        IBOutlet weak var imageView  UIImageView       IBOutlet weak var filterButton  UIButton       IBOutlet weak var saveButton  UIButton      let destinationUrl   FileManager default urls for   documentDirectory  in   userDomainMask  first           appendingPathComponent  quot filteredImage png quot       let imagePicker   UIImagePickerController       let messageFrame   UIView       var activityIndicator   UIActivityIndicatorView       var strLabel   UILabel       let effectView   UIVisualEffectView effect  UIBlurEffect style   dark       func activityIndicator   title  String            strLabel removeFromSuperview           activityIndicator removeFromSuperview           effectView removeFromSuperview           strLabel   UILabel frame  CGRect x  50  y  0  width  160  height  46           strLabel text   title         strLabel font    systemFont ofSize  14  weight   medium          strLabel textColor   UIColor white  0 9  alpha  0 7          effectView frame   CGRect x  view frame midX - strLabel frame width 2  y  view frame midY - strLabel frame height 2   width  160  height  46          effectView layer cornerRadius   15         effectView layer masksToBounds   true         activityIndicator   UIActivityIndicatorView activityIndicatorStyle   white          activityIndicator frame   CGRect x  0  y  0  width  46  height  46          activityIndicator startAnimating           effectView contentView addSubview activityIndicator          effectView contentView addSubview strLabel          view addSubview effectView            func saveImage             do               try imageView image  data  write to  destinationUrl  options   atomic              print  quot file saved quot             catch               print error                              func applyFilterToImage             imageView image   imageView image  applying contrast  1 5            override func viewDidLoad             super viewDidLoad           guard let url   URL string   quot https   upload wikimedia org wikipedia commons a a8 VST images the Lagoon Nebula jpg quot    let data   try  Data contentsOf  url   let image   UIImage data  data  else   return           view backgroundColor   UIColor white  0  alpha  1          imageView image   image            IBAction func startSavingImage   sender  AnyObject            saveButton isEnabled   false         filterButton isEnabled   false         activityIndicator  quot Saving Image quot           DispatchQueue main async               self saveImage               DispatchQueue main async                   self effectView removeFromSuperview                   self saveButton isEnabled   true                 self filterButton isEnabled   true                                    IBAction func filterAction   sender  AnyObject            filterButton isEnabled   false         saveButton isEnabled   false         activityIndicator  quot Applying Filter quot           DispatchQueue main async               self applyFilterToImage               DispatchQueue main async                   self effectView removeFromSuperview                   self filterButton isEnabled   true                 self saveButton isEnabled   true                                    IBAction func cameraAction   sender  AnyObject            if UIImagePickerController isSourceTypeAvailable  camera                imagePicker delegate   self             imagePicker sourceType    camera             present imagePicker  animated  true                      func imagePickerController   picker  UIImagePickerController  didFinishPickingImage image  UIImage   editingInfo   AnyHashable  Any              dismiss animated  true  completion  nil          imageView image   image           extension Data       var image  UIImage    return UIImage data  self        extension UIImage       var data  Data    return UIImagePNGRepresentation self        func applying contrast value  NSNumber  - gt  UIImage            guard let ciImage   CIImage image  self   applyingFilter  quot CIColorControls quot   withInputParameters   kCIInputContrastKey  value   else   return nil           UIGraphicsBeginImageContextWithOptions size  false  scale          defer   UIGraphicsEndImageContext             UIImage ciImage  ciImage  draw in  CGRect origin   zero  size  size           return UIGraphicsGetImageFromCurrentImageContext

User · Answer

For activity indicator  its better you create one custom class   Instead of creating UIActivityIndicator in each UIViewController Subclass UIView and use from any UIViewController   Updated for Swift 5 0   import UIKit import Foundation class ProgressIndicator  UIView    var indicatorColor UIColor var loadingViewColor UIColor var loadingMessage String var messageFrame   UIView   var activityIndicator   UIActivityIndicatorView    init inview UIView loadingViewColor UIColor indicatorColor UIColor msg String        self indicatorColor   indicatorColor     self loadingViewColor   loadingViewColor     self loadingMessage   msg     super init frame  CGRect x  inview frame midX - 90  y  inview frame midY - 250   width  180  height  50       initalizeCustomIndicator      convenience init inview UIView         self init inview  inview loadingViewColor  UIColor brown indicatorColor UIColor black  msg   Loading       convenience init inview UIView messsage String         self init inview  inview loadingViewColor  UIColor brown indicatorColor UIColor black  msg  messsage     required init  coder aDecoder  NSCoder         fatalError  init coder   has not been implemented      func initalizeCustomIndicator         messageFrame frame   self bounds     activityIndicator   UIActivityIndicatorView style  UIActivityIndicatorView Style medium      activityIndicator tintColor   indicatorColor     activityIndicator hidesWhenStopped   true     activityIndicator frame   CGRect x  self bounds origin x   6  y  0  width  20  height  50      print activityIndicator frame      let strLabel   UILabel frame CGRect x  self bounds origin x   30  y  0  width  self bounds width -  self bounds origin x   30    height  50       strLabel text   loadingMessage     strLabel adjustsFontSizeToFitWidth   true     strLabel textColor   UIColor white     messageFrame layer cornerRadius   15     messageFrame backgroundColor   loadingViewColor     messageFrame alpha   0 8     messageFrame addSubview activityIndicator      messageFrame addSubview strLabel       func  start          check if view is already there or not  if again started     if  self subviews contains messageFrame            activityIndicator startAnimating           self addSubview messageFrame            func stop         if self subviews contains messageFrame            activityIndicator stopAnimating           messageFrame removeFromSuperview                Put this class in your project and then call from any ViewController as  var indicator ProgressIndicator  override func viewDidLoad         super viewDidLoad          indicator   ProgressIndicator inview  self view messsage   Hello from Nepal           self view addSubview indicator         OR     indicator   ProgressIndicator inview self view loadingViewColor  UIColor grayColor    indicatorColor  UIColor blackColor    msg   Landing within minutes Please hold tight         self view addSubview indicator        IBAction func startBtn sender  AnyObject        indicator  start        IBAction func stopBtn sender  AnyObject        indicator  stop

User · Answer

Xcode 10 1     Swift 4 2  import UIKit  class ProgressHUD  UIVisualEffectView        var title  String      var theme  UIBlurEffect Style    light      let strLabel   UILabel frame  CGRect x  50  y  0  width  160  height  46       let activityIndicator   UIActivityIndicatorView        init title  String  theme  UIBlurEffect Style    light            super init effect  UIBlurEffect style  theme            self title   title         self theme   theme           activityIndicator  strLabel  forEach contentView addSubview                 required init  coder aDecoder  NSCoder            fatalError  init coder   has not been implemented              override func didMoveToSuperview             super didMoveToSuperview            if let superview   self superview               frame   CGRect x  superview frame midX - strLabel frame width   2                             y  superview frame midY - strLabel frame height   2  width  160  height  46               layer cornerRadius   15 0             layer masksToBounds   true              activityIndicator frame   CGRect x  0  y  0  width  46  height  46              activityIndicator startAnimating                strLabel text   title             strLabel font    systemFont ofSize  14  weight  UIFont Weight medium               switch theme               case  dark                  strLabel textColor    white                 activityIndicator style    white             default                  strLabel textColor    gray                 activityIndicator style    gray                                     func show             self isHidden   false            func hide             self isHidden   true           Use   let progress   ProgressHUD title   Authorization   theme   dark   progress  forEach view addSubview

[swift] How to display an activity indicator with text on iOS 8 with Swift?

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