CODEWITHSUNDEEP
iosswift
QTB
QTB

Reputation: 49

swift, showing one alert then another in the same view

I'm trying to show a loading indicator while loading the data:

let alert = UIAlertController(title: "Updating data", message: "Please wait...", preferredStyle: .alert)

            alert.view.tintColor = UIColor.black
            let loadingIndicator: UIActivityIndicatorView = UIActivityIndicatorView(frame: CGRect(x: 10,y: 5,width: 50, height: 50)) as UIActivityIndicatorView
            loadingIndicator.hidesWhenStopped = true
            loadingIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.gray
            loadingIndicator.startAnimating();

            alert.view.addSubview(loadingIndicator)
            self.present(alert, animated: true, completion: nil)

Then if the data loading is completed, I want to show another alert telling the user that the data is completed: 

if dataLoaded{
    //dismiss the previous alert then show the new one
    dismiss(animated: false, completion: nil)
    let alert2 = UIAlertController(title: "Alert", message: "Data has been updated", preferredStyle: UIAlertControllerStyle.alert)
    alert2.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil))
    self.present(alert2, animated: true, completion: nil)
}

The 2nd alert never gets shown, any thought. I'm fairly new to swift

Thanks in advance BT

Upvotes: 0

Views: 2158

Answers (1)

anas.p
anas.p

Reputation: 2286

Use completion block to show next alert. Try this code, this is working.

let alert = UIAlertController(title: "Updating data", message: "Please wait...", preferredStyle: .alert)

    alert.view.tintColor = UIColor.black
    let loadingIndicator: UIActivityIndicatorView = UIActivityIndicatorView(frame: CGRect(x: 10,y: 5,width: 50, height: 50)) as UIActivityIndicatorView
    loadingIndicator.hidesWhenStopped = true
    loadingIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.gray
    loadingIndicator.startAnimating();

    alert.view.addSubview(loadingIndicator)

    self.present(alert, animated: true) {
        self.dismiss(animated: true, completion: { 
            let alert2 = UIAlertController(title: "Alert", message: "Data has been updated", preferredStyle: UIAlertControllerStyle.alert)
            alert2.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil))
            self.present(alert2, animated: true, completion: nil)
        })
    }

Upvotes: 2

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