Dictionary swift iOS 9中的当前位置

我在plist中添加了nslocationwhenUsageDescription并将其设置为YES，下面是我的代码：

    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    let location = locations.last

    let center = CLLocationCoordinate2D(latitude: location!.coordinate.latitude, longitude: location!.coordinate.longitude)
    let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01))

    self.mapView.setRegion(region, animated: true)

    print(location)
    print(center)

}

但它仍然不起作用。它只是没有显示任何东西。

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似乎从未调用过locationManager函数。它甚至不打印任何日志

刚刚通过添加以下内容解决了此问题：

 locationManager = CLLocationManager()
    locationManager.delegate = self;
    locationManager.desiredAccuracy = kCLLocationAccuracyBest
    locationManager.requestAlwaysAuthorization()
    locationManager.startUpdatingLocation()

并将locationManager声明为类变量<代码>var locationManager:CLLocationManager