iOS-收到消息时触发本地通知

我正在开发一个应用程序，允许它的用户互相发送消息。收到新消息时，它将显示在当前用户的表视图中。我希望我的应用程序在新消息到达时向当前用户发送通知。有人知道我该怎么做吗

我已在AppDelegate中设置了通知：

appdelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    // Let the device know we want to receive push notifications
    [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
    [[UIApplication sharedApplication] registerForRemoteNotifications];
}

我知道以下代码将允许我在指定时间（例如，由选择器设置）发出通知：

但是，当登录用户的新消息发布到服务器（并出现在tableview中）时，如何发出通知

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
       UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeBadge|UIUserNotificationTypeSound|UIUserNotificationTypeAlert) categories:nil];
    [[UIApplication sharedApplication] registerUserNotificationSettings:settings];}

如果您的系统是iOS8，则需要注册权限

UILocalNotification * notification = [[UILocalNotification alloc] init];
    NSDate * pushDate = [NSDate dateWithTimeIntervalSinceNow:Time];
    if (notification!=nil) {


        notification.fireDate= pushDate;

        notification.timeZone = [NSTimeZone defaultTimeZone];

        notification.repeatInterval = kCFCalendarUnitDay;

        notification.soundName = UILocalNotificationDefaultSoundName;

        notification.alertBody = @"Time O.K!";
        NSLog(@"Ready");

        notification.applicationIconBadgeNumber = 1;
        //notification.applicationIconBadgeNumber = [[[UIApplication sharedApplication] scheduledLocalNotifications] count]+1;

        NSDictionary * inforDic = [NSDictionary dictionaryWithObject:@"name" forKey:@"key"];
        notification.userInfo =inforDic;

        [[UIApplication sharedApplication] scheduleLocalNotification:notification];
    }

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您可以尝试一下，我可以在我的设备上成功使用此代码。

当出现新消息时，您需要向应用程序发送推送通知。您可以直接显示推送通知，也可以发送“静默”通知并使用此通知生成本地通知hi@Paulw11-我已成功设置推送通知（使用本教程：）-我只是不确定如何仅在发布新消息时触发它？现在，我正在从终端手动触发它们。通常情况下，您可以从服务器端处理它们，尽管您可以让发送应用程序实例执行此操作，但这是不可取的。不，您不需要设置推送通知。如果应用程序在运行时收到这些消息，则可以使用本地通知。您需要实现

应用程序：didReceiveLocalNotification:

method@DuncanC怎样？！Lol.是的，这些通知是在应用程序运行时发生的；但是，我可以使用哪一段代码来表示，例如，“当收到新消息时，触发通知X”我很困惑-这与上面发布的代码不一样吗（仅当提供了特定时间时才通知）？您可以使用计时器在特定时间触发本地通知。

UILocalNotification * notification = [[UILocalNotification alloc] init];
    NSDate * pushDate = [NSDate dateWithTimeIntervalSinceNow:Time];
    if (notification!=nil) {


        notification.fireDate= pushDate;

        notification.timeZone = [NSTimeZone defaultTimeZone];

        notification.repeatInterval = kCFCalendarUnitDay;

        notification.soundName = UILocalNotificationDefaultSoundName;

        notification.alertBody = @"Time O.K!";
        NSLog(@"Ready");

        notification.applicationIconBadgeNumber = 1;
        //notification.applicationIconBadgeNumber = [[[UIApplication sharedApplication] scheduledLocalNotifications] count]+1;

        NSDictionary * inforDic = [NSDictionary dictionaryWithObject:@"name" forKey:@"key"];
        notification.userInfo =inforDic;

        [[UIApplication sharedApplication] scheduleLocalNotification:notification];
    }