iOS 10和11中的本地通知

Question

我该如何在运行iOS 10和11的设备上即时显示本地通知，我的应用程序要求是立即向用户显示本地通知，因为我们需要先请求本地通知，然后系统安排该通知。我正在运行此代码以显示本地通知。

UNMutableNotificationContent *content = [UNMutableNotificationContent new];
content.title = title;
content.body = body;
content.sound = [UNNotificationSound defaultSound];

UNTimeIntervalNotificationTrigger *trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:1 repeats:NO];

UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:identifier content:content trigger:trigger];
/// 3. schedule localNotification
UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
[center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
    if (!error) {
        NSLog(@"Local Notification succeeded");
    }
    else {
        NSLog(@"Local Notification failed");
    }
}];

Answer 1

你可以试试这个....

        [[UNUserNotificationCenter currentNotificationCenter] setDelegate:self];
        UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
        UNAuthorizationOptions options = UNAuthorizationOptionAlert + UNAuthorizationOptionSound;

        // Request using shared Notification Center
        [center requestAuthorizationWithOptions:options
                              completionHandler:^(BOOL granted, NSError * _Nullable error) {
                                  if (granted) {
                                      NSLog(@"Notification Granted");
                                  }
                              }];

        // Notification authorization settings
        [center getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
            if (settings.authorizationStatus == UNAuthorizationStatusAuthorized) {
                NSLog(@"Notification allowed");
            }
        }];

        UNMutableNotificationContent *content = [UNMutableNotificationContent new];
        content.title = title;
        content.body = body;
        content.sound = [UNNotificationSound defaultSound];
        NSDate *date = [NSDate date];

        // Trigger with date
        NSDateComponents *triggerDate = [[NSCalendar currentCalendar]
                                         components:NSCalendarUnitYear +
                                         NSCalendarUnitMonth + NSCalendarUnitDay +
                                         NSCalendarUnitHour + NSCalendarUnitMinute +
                                         NSCalendarUnitSecond fromDate:date];
        UNCalendarNotificationTrigger *trigger = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:triggerDate
                                                                                                          repeats:NO];

        // Scheduling the notification
        UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:@"Identifier" content:content trigger:trigger];

        [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
            if (error != nil) {
                NSLog(@"Something went wrong: %@",error);
            }
        }];