geolocation

问题 Requirement : 1.Sometimes(not everytime) I am getting latitude and longitude 0.0. 2.I want to know how to get the location update after user has enabled the gps from the settings. Here is my code public class GPSTracker extends Service implements LocationListener { private final Context mContext; // flag for GPS status boolean isGPSEnabled = false; // flag for network status boolean isNetworkEnabled = false; // flag for GPS status boolean canGetLocation = false; Location location; // location

问题 I need to convert from iso-3166-1/iso-3166-2 codes to longitude/latitude Examples: Input: "US", Output: (37.09024, -95.71289100000001). Input "VE-O", Output: (10.9970723, -63.91132959999999). I have been searching around but failed to find a complete listing or, ideally, a Java library doing it. This Github project is promising but is missing a lot of geolocation information for a lot of regions. Note that, unlike the question Need a list of all countries in the world, with a longitude and

问题 I need to convert from iso-3166-1/iso-3166-2 codes to longitude/latitude Examples: Input: "US", Output: (37.09024, -95.71289100000001). Input "VE-O", Output: (10.9970723, -63.91132959999999). I have been searching around but failed to find a complete listing or, ideally, a Java library doing it. This Github project is promising but is missing a lot of geolocation information for a lot of regions. Note that, unlike the question Need a list of all countries in the world, with a longitude and

问题 I have a code snippet that checks for GeoLocation API. If it's available, I try to get current position. But depending on the browser, code works differently: in IE, successCallback is called with every F5 refres in FF, I get successCallback or errorCallback with error code = 2 (POSITION_UNAVAILABLE) in Chrome I get successCallback or... nothing. I wait and wait and nothing Actually I need successCallback to be called in some consistent manner... Is there a change to achieve it? Code snippet:

问题 I am working on React native project and there I am taking location permissions. Also I have to track location permissions always like if user has given permission access after install the application and then after sometime user goes to the app settings in device settings and disable/revoked the permissions. Again once app comes from background to foreground, I have to check permission based on that, Needs to show the messages. So that, I am using Appstate. But, In Android strangely, After

问题 How to get the current Latitude and Longitude in android2.3.3? I try to Follow this but I can't run programs. My code LatView = (TextView)findViewById(R.id.LatText); LngView = (TextView)findViewById(R.id.LngText); LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE); Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); double longitude = location.getLongitude(); double latitude = location.getLatitude(); In android manifest I put this. <uses

问题 I'm looking for a way to gather internal GPS data from a powershell script using Windows Location API, as the Windows Location Platform is no longer able to satisfy the need. Previously, there was a com object to use. Is there a way for this to be accomplished in Windows 10? 回答1: An example of using the System.Device.Location method, this should be what you're looking for. Add-Type -AssemblyName System.Device #Required to access System.Device.Location namespace $GeoWatcher = New-Object System

问题 I am having issue regarding significant-change location service. Apple documentation says "Whether you use the standard location service or the significant-change location service to get location events, the way you receive those events is the same." but in case of "significant-change location service" I am not able to get any callbacks which I get in case of "standard location service" Please let me know if anybody has any inputs? 回答1: startUpdatingLocation updates the location when it is

问题 you can subscribe to requestLocationUpdates via two ways one by specifing a PendingIntent the other is by using a LocationListener When is advised the one and when the other? 回答1: If the component needing location updates only needs updates when the component is around -- say, an activity -- I'd use the LocationListener approach. If the component needing location updates specifically will not be around -- say, an IntentService -- I'd use the PendingIntent . You can't use the LocationListener

问题 Maxmind offers a binary DAT file format for downloading their GeoIP database. http://geolite.maxmind.com/download/geoip/database/GeoLiteCity.dat.gz Does anyone know how this has been packaged? Also, is there any kind of copy protection on the data? I'd like to offer up a set of data in a similar way. Anyone with any knowledge of this will receive my undying gratitude :-) 回答1: It's just a proprietary binary format, heavily optimized for IP address querying. It doesn't have any copy protection.