iOS8 UILocalNotification 不工作

Question

我正在使用以下代码进行本地通知。但它不起作用。位置已成功更新并进入这些方法，但未触发通知。有什么想法吗？:

注意：当应用程序处于后台时它可以工作，但当应用程序关闭时它不工作。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]){
        [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
    }
    [[UIApplication sharedApplication] cancelAllLocalNotifications];
    // Override point for customization after application launch.
    self.locationManager = [[CLLocationManager alloc] init];
    self.locationManager.delegate = self;

    return YES;
}

-(void) locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region {
    if ([region isKindOfClass:[CLBeaconRegion class]]) {
        UILocalNotification *notification = [[UILocalNotification alloc] init];
        notification.alertBody = @"You are checked in";
        notification.soundName = @"Default";
        [[UIApplication sharedApplication] presentLocalNotificationNow:notification];
    }
}

Answer 1

您应该记住，只有当您的应用程序在后台而不是在前台时才会显示通知。如果您在前台执行 AppDelegate 的 - application:didReceiveLocalNotification: 并自己手动处理通知。

UPD

如果您的应用运行即使在后台，您的代码也不会执行。寻找 Background modes（跟踪用户的位置部分）以获取可能的解决方案，以要求系统通过事件启动您的应用程序，即使当前它不在内存中

Answer 2

Wen app is closed applicationDidEnterBackground was called 所以把这个后台任务代码。和 class 本地通知。

- (void)applicationDidEnterBackground:(UIApplication *)application 
{
       bgTask = [application beginBackgroundTaskWithName:@"MyTask" expirationHandler:^{
    // Clean up any unfinished task business by marking where you
    // stopped or ending the task outright.
    [application endBackgroundTask:bgTask];
    bgTask = UIBackgroundTaskInvalid;
}];

// Start the long-running task and return immediately.
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{

    // Do the work associated with the task, preferably in chunks.

    [application endBackgroundTask:bgTask];
    bgTask = UIBackgroundTaskInvalid;
});
    ////  just u call the method want ever u want example

    [self notification];
}

- (void)notification
{ 
    UILocalNotification *notification = [[UILocalNotification alloc] init];
    notification.alertBody = @"You are checked in";
    notification.soundName = @"Default";
    [[UIApplication sharedApplication] presentLocalNotificationNow:notification];
}

觉得对你有帮助

Answer 3

即使您的应用程序已从后台移除，本地通知也能正常工作。但在您的情况下，您正在侦听位置管理器事件并在委托方法内触发本地通知。一旦您终止应用程序，您的位置管理器事件将不会被触发。所以你的本地通知根本不会被触发。

Answer 4

当您的应用被终止时，信标监控仍会重新启动它——这就是信标监控的伟大之处！

你需要做的就是在application:didFinishLaunchingWithOptions:方法中重新启动监控。如果您这样做，导致应用程序启动的 didEnterRegion 事件将立即传递给委托，这应该会触发通知。

Estimote 有更详细的指南： Launching notifications in iOS when the app is killed。它使用 Estimote SDK 中的 ESTBeaconManager、ESTBeaconManagerDelegate 和 ESTBeaconRegion 类，但您可以简单地将它们替换为常规核心位置类以获得相同的效果。

Answer 5

我的情况是通知被禁用了 Settings -> Notifications -> YOUR_APP -> Allow Notifications

iOS8 UILocalNotification 不工作

iOS8 UILocalNotification not working

objective-c

ios

uilocalnotification

ibeacon

ios8