iPhone本地通知不会出现

可能重复：
UILocalNotification根本不起作用

我正在编写一个应用程序，当事件日期临近时，通过通知中心向用户发送警报。 但是，当我在日期选择器中设置日期并关闭应用程序时，通知不会出现。 我已在配置文件中启用了推送通知。 这是我的项目中处理通知中心的所有代码，这是我的视图控制器文件中处理日期选择器的所有代码：

- (IBAction)dateChanged:(id)sender { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; NSDate *selectedDate = [self.datePicker date]; [defaults setObject:selectedDate forKey:@"ImportantDatesViewController.selectedDate"]; [defaults synchronize]; } - (void)viewDidLoad { NSDate *storedDate = [[NSUserDefaults standardUserDefaults] objectForKey:@"ImportantDatesViewController.selectedDate"]; if (storedDate == nil) { storedDate = [NSDate date]; } [self.datePicker setDate:storedDate animated:NO]; } 

这是我的App委托中处理本地通知的所有内容：

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { .... [[UIApplication sharedApplication] registerForRemoteNotificationTypes: UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound]; UILocalNotification *localNotif = [[UILocalNotification alloc] init]; NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"mm'/'dd'/'yyyy"]; NSDate *eventDate = [[NSUserDefaults standardUserDefaults] objectForKey:@"ImportantDatesViewController.selectedDate"]; localNotif.fireDate = [eventDate dateByAddingTimeInterval:-13*60*60]; localNotif.timeZone = [NSTimeZone defaultTimeZone]; localNotif.alertBody = @"Event in three days!"; localNotif.alertAction = nil; localNotif.soundName = UILocalNotificationDefaultSoundName; localNotif.applicationIconBadgeNumber = 0; [[UIApplication sharedApplication] scheduleLocalNotification:localNotif]; return YES; } - (void)application:(UIApplication*)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData*)deviceToken { NSString* pushToken = [[[[deviceToken description] stringByReplacingOccurrencesOfString:@"" withString:@""] stringByReplacingOccurrencesOfString: @" " withString: @""]; NSLog(@"%@", pushToken); } - (void)application:(UIApplication*)application didFailToRegisterForRemoteNotificationsWithError:(NSError*)error { NSLog(@"error: %@", error); } 

非常感谢任何帮助，谢谢！

Answer 1

以下代码用于本地通知。

 -(IBAction)buttonPressed:(UIButton *)button { UILocalNotification *localNotification = [[UILocalNotification alloc] init]; if (!localNotification) return; // Current date NSDate *date = [NSDate date]; // Add one minute to the current time NSDate *dateToFire = [date dateByAddingTimeInterval:20]; // Set the fire date/time [localNotification setFireDate:dateToFire]; [localNotification setTimeZone:[NSTimeZone defaultTimeZone]]; // Create a payload to go along with the notification NSArray *array = [NSArray arrayWithObjects:@"Value 1", @"Value 2", nil]; NSDictionary *data = [NSDictionary dictionaryWithObject:array forKey:@"payload"]; [localNotification setUserInfo:data]; if (button == buttonAlert || button == buttonAll) { // Setup alert notification [localNotification setAlertBody:@"Incoming Local Notification" ]; [localNotification setAlertAction:@"Open App"]; [localNotification setHasAction:YES]; } if (button == buttonBadge || button == buttonAll) { // Set badge notification, increment current badge value [localNotification setApplicationIconBadgeNumber:[[UIApplication sharedApplication] applicationIconBadgeNumber] + 1]; } if (button == buttonSound || button == buttonAll) { // Setup sound notification [localNotification setSoundName:UILocalNotificationDefaultSoundName]; } // Schedule the notification [[UIApplication sharedApplication] scheduleLocalNotification:localNotification]; }