iOS UIAlertController AlertViews with UIAlertController
Example
UIAlertView and UIActionSheet are Deprecated in iOS 8 and Later. So Apple introduced a new controller for AlertView and ActionSheet called UIAlertController , changing the preferredStyle, you can switch between AlertView and ActionSheet. There is no delegate method for it because all button events are handled in their blocks.
Simple AlertView
Swift:
let alert = UIAlertController(title: "Simple", message: "Simple alertView demo with Cancel and OK.", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Cancel", style: .cancel) { _ in
print("Cancel")
})
alert.addAction(UIAlertAction(title: "OK", style: .default) { _ in
print("OK")
})
present(alert, animated: true)
Objective-C:
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Simple" message:@"Simple alertView demo with Cancel and OK." preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction * action) {
NSLog(@"Cancel");
}];
UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) {
NSLog(@"OK");
}];
[alertController addAction:cancelAction];
[alertController addAction:okAction];
[self presentViewController:alertController animated: YES completion: nil];
Destructive AlertView
Swift:
let alert = UIAlertController(title: "Simple", message: "Simple alertView demo with Cancel and OK.", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Destructive", style: .destructive) { _ in
print("Destructive")
})
alert.addAction(UIAlertAction(title: "OK", style: .default) { _ in
print("OK")
})
present(alert, animated: true)
Objective-C:
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Destructive" message:@"Simple alertView demo with Destructive and OK." preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *destructiveAction = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * action) {
NSLog(@"Destructive");
}];
UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) {
NSLog(@"OK");
}];
[alertController addAction:destructiveAction];
[alertController addAction:okAction];
[self presentViewController:alertController animated: YES completion: nil];
