How to show a message on screen for a few seconds?
This shows an Alert View on screen and auto closes after 1 second. You can set the time.
var alert:UIAlertController!
func showAlert() {
self.alert = UIAlertController(title: "Alert", message: "Wait Please!", preferredStyle: UIAlertControllerStyle.Alert)
self.presentViewController(self.alert, animated: true, completion: nil)
NSTimer.scheduledTimerWithTimeInterval(1.0, target: self, selector: Selector("dismissAlert"), userInfo: nil, repeats: false)
}
func dismissAlert(){
// Dismiss the alert from here
self.alert.dismissViewControllerAnimated(true, completion: nil)
}
I was able to accomplish what I wanted after researching what was suggested in the comment by @mn1. I used animateWithDuration to fade the label away. Here is some example code:
myLabel.hidden = false
UIView.animateWithDuration(0.5, animations: { () -> Void in
self.myLabel.alpha = 0
})
This code became shorter with iOS 10. Thanks to @fatihyildizhan
func showAlert() {
let alert = UIAlertController(title: "Alert", message: "Wait Please!", preferredStyle: .alert)
self.present(alert, animated: true, completion: nil)
Timer.scheduledTimer(withTimeInterval: 3.0, repeats: false, block: { _ in alert.dismiss(animated: true, completion: nil)} )
}
Swift 3 Solution:
// Define a view
var popup:UIView!
func showAlert() {
// customise your view
popup = UIView(frame: CGRect(x: 100, y: 200, width: 200, height: 200))
popup.backgroundColor = UIColor.redColor
// show on screen
self.view.addSubview(popup)
// set the timer
Timer.scheduledTimer(timeInterval: 3.0, target: self, selector: #selector(self.dismissAlert), userInfo: nil, repeats: false)
}
func dismissAlert(){
if popup != nil { // Dismiss the view from here
popup.removeFromSuperview()
}
}
Swift 2 Solution:
// Define a view
var popup:UIView!
func showAlert() {
// customise your view
popup = UIView(frame: CGRect(x: 100, y: 200, width: 200, height: 200))
popup.backgroundColor = UIColor.redColor()
// show on screen
self.view.addSubview(popup)
// set the timer
NSTimer.scheduledTimerWithTimeInterval(3.0, target: self, selector: Selector("dismissAlert"), userInfo: nil, repeats: false)
}
func dismissAlert(){
// Dismiss the view from here
popup.removeFromSuperview()
}
// Don't forget to call showAlert() function in somewhere