Adding an Activity Indicator to UIAlertView

Question

I am trying to add a UIActivityIndicatorView to a UIAlertView , but could not do it. I saw messages about this implementation and found out that it only works for versions below iOS7.

Below is the code I tried ...

 var alert: UIAlertView = UIAlertView(title: "Title", message: "Please wait...", delegate: nil, cancelButtonTitle: "Cancel"); var loadingIndicator: UIActivityIndicatorView = UIActivityIndicatorView(frame: CGRectMake(0.0, 0.0, 10.0, 10.0)) as UIActivityIndicatorView loadingIndicator.center = self.view.center; loadingIndicator.hidesWhenStopped = true loadingIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.Gray loadingIndicator.startAnimating(); alert.addSubview(loadingIndicator); alert.show(); 

Is there anything specific for iOS7 and above to do this?

Answer 1

try this code !!

 var alert: UIAlertView = UIAlertView(title: "Title", message: "Please wait...", delegate: nil, cancelButtonTitle: "Cancel") var loadingIndicator: UIActivityIndicatorView = UIActivityIndicatorView(frame: CGRect(x: 50, y: 10, width: 37, height: 37)) as UIActivityIndicatorView loadingIndicator.center = self.view.center loadingIndicator.hidesWhenStopped = true loadingIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.Gray loadingIndicator.startAnimating(); alert.setValue(loadingIndicator, forKey: "accessoryView") loadingIndicator.startAnimating() alert.show(); 

I hope I helped you

Answer 2

For quick 4 Create an alert controller extension

 extension UIAlertController { private struct ActivityIndicatorData { static var activityIndicator = UIActivityIndicatorView(frame: CGRect(x: 0, y: 0, width: 40, height: 40)) } func addActivityIndicator() { let vc = UIViewController() vc.preferredContentSize = CGSize(width: 40,height: 40) ActivityIndicatorData.activityIndicator.color = UIColor.blue ActivityIndicatorData.activityIndicator.startAnimating() vc.view.addSubview(ActivityIndicatorData.activityIndicator) self.setValue(vc, forKey: "contentViewController") } func dismissActivityIndicator() { ActivityIndicatorData.activityIndicator.stopAnimating() self.dismiss(animated: false) } } 

Create a Var a ctivityIndicatorAlert in your view controller and write display and dismiss in the view controller as shown below

 var activityIndicatorAlert: UIAlertController? func displayActivityIndicatorAlert() { activityIndicatorAlert = UIAlertController(title: NSLocalizedString("Loading", comment: ""), message: NSLocalizedString("PleaseWait", comment: "") + "...", preferredStyle: UIAlertController.Style.alert) activityIndicatorAlert!.addActivityIndicator() var topController:UIViewController = UIApplication.shared.keyWindow!.rootViewController! while ((topController.presentedViewController) != nil) { topController = topController.presentedViewController! } topController.present(activityIndicatorAlert!, animated:true, completion:nil) } func dismissActivityIndicatorAlert() { activityIndicatorAlert!.dismissActivityIndicator() activityIndicatorAlert = nil } 

You can also add the UIViewcontroller extension to the globally accessible methods above.

 extension UIViewController { private struct activityAlert { static var activityIndicatorAlert: UIAlertController? } //completion : ((Int, String) -> Void)?) func displayIPActivityAlert(_ onCancel : (()-> Void)?) { activityAlert.activityIndicatorAlert = UIAlertController(title: NSLocalizedString("Loading...", comment: ""), message: nil , preferredStyle: UIAlertController.Style.alert) activityAlert.activityIndicatorAlert!.addActivityIndicator() var topController:UIViewController = UIApplication.shared.keyWindow!.rootViewController! while ((topController.presentedViewController) != nil) { topController = topController.presentedViewController! } activityAlert.activityIndicatorAlert!.addAction(UIAlertAction.init(title:NSLocalizedString("Cancel", comment: ""), style: .default, handler: { (UIAlertAction) in self.dismissIPActivityAlert() onCancel?() })) topController.present(activityAlert.activityIndicatorAlert!, animated:true, completion:nil) } func dismissIPActivityAlert() { activityAlert.activityIndicatorAlert!.dismissActivityIndicator() activityAlert.activityIndicatorAlert = nil } } 

Answer 3

For those who use Objective-C. My solution wraps a UIActivityIndicatorView great view, so the edge to edge of the UIAlertView not so small.

 #import "UIAlertView+ActivityIndicator.h" @implementation UIAlertView (ActivityIndicator) + (UIAlertView *)alertViewWithActivityIndicator:(NSString *)title delegate:(id<UIAlertViewDelegate>)delegate; { UIAlertView *a = [[UIAlertView alloc] initWithTitle:title message:nil delegate:delegate cancelButtonTitle:nil otherButtonTitles:nil]; UIView *v = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 50, 50)]; UIActivityIndicatorView *aiv = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray]; aiv.translatesAutoresizingMaskIntoConstraints = NO; [v addSubview:aiv]; [v addConstraint:[NSLayoutConstraint constraintWithItem:aiv attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:v attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:0]]; [v addConstraint:[NSLayoutConstraint constraintWithItem:aiv attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:v attribute:NSLayoutAttributeCenterY multiplier:1.0 constant:0]]; [aiv startAnimating]; [a setValue:v forKey:@"accessoryView"]; return a; } @end 

Answer 4

Accepted answer in Swift 3:

 var alert: UIAlertView = UIAlertView(title: "Title", message: "Please wait...", delegate: nil, cancelButtonTitle: "Cancel"); let loadingIndicator = UIActivityIndicatorView(frame: CGRect(x:50, y:10, width:37, height:37)) loadingIndicator.center = self.view.center; loadingIndicator.hidesWhenStopped = true loadingIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.gray loadingIndicator.startAnimating(); alert.setValue(loadingIndicator, forKey: "accessoryView") loadingIndicator.startAnimating() alert.show();