Reject UIAlertControllerStyleAlert UIAlertController by clicking outside
As everyone knows, it is UIAlertView
now outdated and Apple wants us to use the new one UIAlertController
with style UIAlertControllerStyleAlert
. However, using UIAlertControllerStyleAlert
, you cannot invoke UIAlertAction
with style UIAlertActionStyleCancel
by touching the appearance of the alert.
Does anyone know a way to dismiss an alert view by clicking on it?
Greetings
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You can add a separate UIAlertActionStyleCancel style cancel action for the alertViewController so that when the user logs out from the outside, you get a callback.
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Alert Title" message:@"A Message" preferredStyle:UIAlertControllerStyleActionSheet];
[alertController addAction:[UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
// Called when user taps outside
}]];
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Try this code:
- (void)viewDidLoad {
[super viewDidLoad];
[self button];
}
- (void) button {
UIButton * AlertButton = [UIButton buttonWithType:UIButtonTypeSystem];
[AlertButton setTitle:@"Button" forState:UIControlStateNormal];
AlertButton.frame = CGRectMake((self.view.frame.size.width/2) - 50 , (self.view.frame.size.height/2) - 25, 100, 50);
[AlertButton addTarget:self action:@selector(Alert) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:AlertButton];
}
- (void)Alert {
UIAlertController * alert = [UIAlertController alertControllerWithTitle:@"Alert Title" message:@"Alert Message" preferredStyle:UIAlertControllerStyleAlert];
[self presentViewController: alert animated: YES completion:^{ alert.view.superview.userInteractionEnabled = YES; [alert.view.superview addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget: self action: @selector(DismissAlertByTab)]]; }];
}
- (void)DismissAlertByTab
{
[self dismissViewControllerAnimated: YES completion: nil];
}
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