ios - didUpdateLocations 总是用不同的坐标多次调用

Question

因此，我的应用需要每隔 15 米捕获一次位置。

在viewDidLoad中

NSOperationQueue.mainQueue().addOperationWithBlock {
    self.manager = CLLocationManager()
    self.manager.delegate = self
    self.manager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
    self.manager.distanceFilter = 15.0
    self.manager.headingFilter = 10
    self.manager.startUpdatingLocation()
}

第一次(我不动)，在

func locationManager(manager:CLLocationManager, didUpdateLocations locations:[AnyObject])

我得到(真实的例子):*.1488241293991*.5997807433053

第二次:*.1489010891664*.599624152471

我在真实设备上使用 ios7 和 swift 进行测试。

我做错了什么？

谢谢!

Answer 1

来自 CLLocationManager 类引用:

When requesting high-accuracy location data, the initial event delivered by the location service may not have the accuracy you requested. The location service delivers the initial event as quickly as possible. It then continues to determine the location with the accuracy you requested and delivers additional events, as necessary, when that data is available.

因此您检索到的第一个位置可能不准确。