Question

这是didEnterRegion函数的代码。问题是通知在进入和退出时触发。只有当用户进入该位置时，我该怎么做才能触发通知？

func locationManager(manager: CLLocationManager!, didEnterRegion region: CLRegion!) {
        var localNotification:UILocalNotification = UILocalNotification()
        localNotification.alertBody = "you've entered rohini sector -8"
        localNotification.region = region
        UIApplication.sharedApplication().scheduleLocalNotification(localNotification)
        NSLog("Entering region")
    }

Answer 1

You don't need to specify the region in the local notification. You already know that the device is inside the region, because you had a call to didEnterRegion - specifying the region on the notification is redundant - You can simply post the notification without the region specified.

Answer 2

您没有指定要监控进入或退出该区域。创建区域时，请设置notifyOnExit或notifyOnEntry。如果你只想要退出，那么将该值设为true，另一个为false ...或者如果只有entry ..执行相反的操作

///// snipped taken from ray wenderlichs code...

// 1
let region = CLCircularRegion(center: geotification.coordinate,
    radius: geotification.radius, identifier: geotification.identifier)

// 2
region.notifyOnEntry = false
region.notifyOnExit = true

仅在用户输入指定区域时触发localNotification

2 个答案: