spróbować tej
Objective-C
UIWindow* topWindow = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
topWindow.rootViewController = [UIViewController new];
topWindow.windowLevel = UIWindowLevelAlert + 1;
UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"APNS" message:@"received Notification" preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:NSLocalizedString(@"OK",@"confirm") style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
// continue your work
// important to hide the window after work completed.
// this also keeps a reference to the window until the action is invoked.
topWindow.hidden = YES;
}]];
[topWindow makeKeyAndVisible];
[topWindow.rootViewController presentViewController:alert animated:YES completion:nil];
Swift3
let topWindow = UIWindow(frame: UIScreen.main.bounds)
topWindow.rootViewController = UIViewController()
topWindow.windowLevel = UIWindowLevelAlert + 1
let alert = UIAlertController(title: "APNS", message: "received Notification", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: NSLocalizedString("OK", comment: "confirm"), style: .cancel, handler: {(_ action: UIAlertAction) -> Void in
// continue your work
// important to hide the window after work completed.
// this also keeps a reference to the window until the action is invoked.
topWindow.isHidden = true
}))
topWindow.makeKeyAndVisible()
topWindow.rootViewController?.present(alert, animated: true, completion: { _ in })
Swift
var topWindow: UIWindow = UIWindow(frame: UIScreen.mainScreen().bounds)
topWindow.rootViewController = UIViewController()
topWindow.windowLevel = UIWindowLevelAlert + 1
var alert: UIAlertController = UIAlertController.alertControllerWithTitle("APNS", message: "received Notification", preferredStyle: .Alert)
alert.addAction(UIAlertAction.actionWithTitle(NSLocalizedString("OK", "confirm"), style: .Cancel, handler: {(action: UIAlertAction) -> Void in
// continue your work
// important to hide the window after work completed.
// this also keeps a reference to the window until the action is invoked.
topWindow.hidden = true
}))
topWindow.makeKeyAndVisible()
topWindow.rootViewController.presentViewController(alert, animated: true, completion: { _ in })
Szczegółowy opis: http://www.thecave.com/2015/09/28/how-to-present-an-alert-view-using-uialertcontroller-when-you-dont-have-a-view-controller/
co creash raport –
Ale UIAlertcontroller jest wyświetlana w głównym widoku .... oczywiście dodawania wpisu do kontrolera głównego. Oczywiście spowoduje awarię na innym kontrolerze Uiview, ponieważ próbujesz dodać alert do kontrolera, który nie jest wyświetlany użytkownikowi. –
Tak, wiem, że dodaję kontroler uialert do rootView, a nie do aktywnego widoku, a moim pytaniem jest, w jaki sposób mogę pokazać uialertController w innym sterowniku uiview po otrzymaniu powiadomienia. – Rockers23