當用戶移動時,如何駕馭Google地圖?我擁有的代碼不會將用戶居中,而且用戶只是走向邊界而曠工。你如何讓用戶始終處於中心位置?你如何以用戶更改位置爲中心的地圖
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
if let location = manager.location {
if (firstLoad) {
firstLoad = false
recentCoordinate = location.coordinate
mapView.camera = GMSCameraPosition(target: location.coordinate, zoom: Constants.MapView.Zoom, bearing: 0, viewingAngle: Constants.MapView.ViewingAngle)
}
else {
// This line of code suppose to center the user as user moves along while keeping the zoom and angle state user has chosen
mapView.camera = GMSCameraPosition(target: location.coordinate, zoom: mapView.camera.zoom, bearing: 0, viewingAngle: mapView.camera.viewingAngle)
}
// Filter out noise. Currently not working
let age = 0 - location.timestamp.timeIntervalSinceNow
if (age > 120) {
return; // ignore old (cached) updates
}
if (location.horizontalAccuracy < 0) {
return; // ignore invalid updates
}
if (location.horizontalAccuracy <= 10){
// this is a valid update
// Draw route as user moves along
path.addCoordinate(CLLocationCoordinate2D(latitude: location.coordinate.latitude,
longitude: location.coordinate.longitude))
let polyline = GMSPolyline(path: path)
polyline.strokeColor = UIColor.redColor()
polyline.strokeWidth = 3
polyline.map = mapView
// Save the coordinates to array
coordinateArray.append([location.coordinate.latitude, location.coordinate.longitude])
}
}
你確定了'其他'語句被觸發?它應該工作。 – Ryan
我很確定其他語句被觸發。 – user30646