Xcode中的通知沒有出現

Question

我想向我的代碼添加一個通知，以便當按下按鈕時，用戶被保存到數據庫，並彈出一個通知，說用戶已成功保存到數據庫。我檢查了我的代碼，但它仍然無法工作。沒有錯誤出現，但沒有任何通知。我試圖在屏幕頂部創建一個小橫幅，標題爲「客戶保存到數據庫」。

這是我的代碼;如果你能發現任何錯誤或建議如何解決它，我會非常感激！

使用Xcode 8.2.1。和目標C

在AppDelegate.m

：

-(void)application:(UIApplication *)application  didRegisterUserNotificationSettings:(nonnull UIUserNotificationSettings *)notificationSettings{} 

在NewCustomerViewController.m

：

@interface NewCustomerViewController(){NSUserDefaults *defaults;} 

在viewDidLoad中

：

defaults = [NSUserDefaults standardUserDefaults]; 
UIUserNotificationType types = UIUserNotificationTypeBadge| UIUserNotificationTypeSound| UIUserNotificationTypeAlert; 
UIUserNotificationSettings *mySettings = [UIUserNotificationSettings settingsForTypes:types categories:nil];[[UIApplication sharedApplication] registerUserNotificationSettings:mySettings]; 

終於，在我IBAction爲爲節省客戶的按鈕：

[defaults setBool:YES forKey:@"notificationIsActive"]; 
    [defaults synchronize]; 
    UILocalNotification* localNotification = [[UILocalNotification alloc] init]; 
    localNotification.fireDate = 0; 
    //Enter the time here in seconds. 
    localNotification.alertBody= @"Customer Saved to Database"; 
    localNotification.timeZone = [NSTimeZone defaultTimeZone]; 
    //localNotification.repeatInterval= NSCalendarUnitDay;//NSCalendarUnitMinute; //Repeating instructions here. 
    localNotification.soundName= UILocalNotificationDefaultSoundName; 
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification]; 

再次感謝！

Answer 1

您使用的iOS 9本地通知工作，下面的方法是在iOS的10 完全不同的下面是本地通知代碼：

的Objective-C：

1. In App-delegate.h file use @import UserNotifications; 
2. App-delegate should conform to UNUserNotificationCenterDelegate protocol 
3. In didFinishLaunchingOptions use below code : 

UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter]; 
[center requestAuthorizationWithOptions:(UNAuthorizationOptionBadge | UNAuthorizationOptionSound | UNAuthorizationOptionAlert) 
          completionHandler:^(BOOL granted, NSError * _Nullable error) { 
      if (!error) { 
        NSLog(@"request authorization succeeded!"); 
        [self showAlert]; 
           } 
          }]; 

-(void)showAlert { 
    UIAlertController *objAlertController = [UIAlertControlleralertControllerWithTitle:@"Alert" message:@"show an alert!"preferredStyle:UIAlertControllerStyleAlert]; 
     
    UIAlertAction *cancelAction = [UIAlertAction 
                                   actionWithTitle:@"OK" 
                                   style:UIAlertActionStyleCancel 
                                   handler:^(UIAlertAction *action) { 
                                       NSLog(@"Ok clicked!"); 
                                   }]; 
    [objAlertController addAction:cancelAction]; 
     
     
    [[[[[UIApplication sharedApplication] windows] objectAtIndex:0] rootViewController] presentViewController:objAlertController animated:YEScompletion:^{ 
         
    }]; 
     
} 
4. Now create a button in any view controller and in IBAction use below code : 
UNMutableNotificationContent *objNotificationContent = [[UNMutableNotificationContent alloc] init]; 
    objNotificationContent.title = [NSStringlocalizedUserNotificationStringForKey:@「Notification!」arguments:nil]; 
    objNotificationContent.body = [NSStringlocalizedUserNotificationStringForKey:@「This is local notification message!「 
                                                         arguments:nil]; 
    objNotificationContent.sound = [UNNotificationSounddefaultSound]; 
     
    /// 4. update application icon badge number 
    objNotificationContent.badge = @([[UIApplicationsharedApplication] applicationIconBadgeNumber] + 1); 
     
    // Deliver the notification in five seconds. 
    UNTimeIntervalNotificationTrigger *trigger = [UNTimeIntervalNotificationTrigger 
                                                  triggerWithTimeInterval:10.f repeats:NO];        
     
    UNNotificationRequest *request = [UNNotificationRequestrequestWithIdentifier:@「ten」 
                                                                          content:objNotificationContent trigger:trigger]; 
    /// 3. schedule localNotification 
    UNUserNotificationCenter *center = [UNUserNotificationCentercurrentNotificationCenter]; 
    [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) { 
        if (!error) { 
            NSLog(@「Local Notification succeeded「); 
        } 
    else { 
        NSLog(@「Local Notification failed「); 
    } 
    }]; 

你可以參考蘋果參考文檔https://developer.apple.com/reference/usernotifications for UserNotification。