如何使用目标C实现LocalNotification？

我正试图在我的application实施local notification 。 我不知道该怎么做，下面的代码，我正在使用新的数据到达过程，这里后如何实现通知过程，我需要在foreground和background两个时间的notification

下面我已经成功的为新的数据到达检查方法的background获取过程

  // Value matching and trying to get new data [live_array removeObjectsInArray:stored_array]; // if you require result as a string NSString *result = [stored_array componentsJoinedByString:@","]; NSLog(@"New Data: %@", result); // objects as string: 

上面的代码最后给一些string值…一旦价值来了，我想show notification 。 我正在做的所有事情

谢谢

Answer 1

1）当应用程序closures时，安排一个本地通知，将在24小时内触发

 - (void)applicationDidEnterBackground:(UIApplication *)application { UILocalNotification *notification = [[UILocalNotification alloc] init]; notification.fireDate = [[NSDate date] dateByAddingTimeInterval:60*60*24]; notification.alertBody = @"24 hours passed since last visit :("; [[UIApplication sharedApplication] scheduleLocalNotification:notification]; } 

2）如果应用程序被打开（在本地通知被触发之前），取消本地通知

 - (void)applicationDidBecomeActive:(UIApplication *)application { [[UIApplication sharedApplication] cancelAllLocalNotifications]; } 

//用于本地通知

我们需要做的第一件事就是注册通知。

  // New for iOS 8 - Register the notifications UIUserNotificationType types = UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert; UIUserNotificationSettings *mySettings = [UIUserNotificationSettings settingsForTypes:types categories:nil]; [[UIApplication sharedApplication] registerUserNotificationSettings:mySettings]; 

现在让我们创build通知本身

  UILocalNotification *notification = [[UILocalNotification alloc] init]; if (notification) { notification.fireDate = _datePicker.date; NSDate *fireTime = [[NSDate date] addTimeInterval:10]; // adds 10 secs notification.fireDate = fireTime; notification.alertBody = @"Alert!"; notification.timeZone = [NSTimeZone defaultTimeZone]; notification.applicationIconBadgeNumber = 1; notification.soundName = UILocalNotificationDefaultSoundName; switch (_frequencySegmentedControl.selectedSegmentIndex) { case 0: notification.repeatInterval = NSCalendarUnitDay; break; case 1: notification.repeatInterval = NSCalendarUnitWeekOfYear; break; case 2: notification.repeatInterval = NSCalendarUnitYear; break; default: notification.repeatInterval = 0; break; } notification.alertBody = _customMessage.text; 

一旦我们创build了通知，我们需要安排与应用程序。

 // this will schedule the notification to fire at the fire date [[UIApplication sharedApplication] scheduleLocalNotification:notification]; // this will fire the notification right away, it will still also fire at the date we set [[UIApplication sharedApplication] presentLocalNotificationNow:notification]; 

如果我们按现在的方式离开，那么只有当应用程序在后台时，通知才会出现在屏幕上。 为了在应用程序处于前台时显示某些内容，并且触发通知，我们需要在应用程序委托中实现一个方法。

 - (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification { UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"Notification Received" message:notification.alertBody delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil]; [alertView show]; } 

我们为我们的应用程序添加了一个图标徽章，只有当应用程序在后台时才会显示此图标徽章。 一般来说，您想在用户打开应用程序并看到通知后closures图标。 我们还需要在应用程序委托中处理这个问题。

这两个方法会照顾它。

 - (void)applicationWillEnterForeground:(UIApplication *)application { // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background. NSLog(@"%s", __PRETTY_FUNCTION__); application.applicationIconBadgeNumber = 0; } - (void)applicationDidBecomeActive:(UIApplication *)application { // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. NSLog(@"%s", __PRETTY_FUNCTION__); application.applicationIconBadgeNumber = 0; } 

Answer 2

IOS 10由苹果文件

 UNMutableNotificationContent* content = [[UNMutableNotificationContent alloc] init]; content.title = [NSString localizedUserNotificationStringForKey:@"Hello!" arguments:nil]; content.body = [NSString localizedUserNotificationStringForKey:@"Hello_message_body" arguments:nil]; content.sound = [UNNotificationSound defaultSound]; // Deliver the notification in five seconds. UNTimeIntervalNotificationTrigger* trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:5 repeats:NO]; UNNotificationRequest* request = [UNNotificationRequest requestWithIdentifier:@"FiveSecond" content:content trigger:trigger]; // Schedule the notification. UNUserNotificationCenter* center = [UNUserNotificationCenter currentNotificationCenter]; [center addNotificationRequest:request completionHandler:nil];