geolocation

Get current location of user in Android without using GPS or internet

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What you are looking to do is get the position using the LocationManager.NETWORK_PROVIDER instead of LocationManager.GPS_PROVIDER. The NETWORK_PROVIDER will resolve on the GSM or wifi, which ever available. Obviously with wifi off, GSM will be used. Keep in mind that using the cell network is accurate to basically 500m. http://developer.android.com/guide/topics/location/obtaining-user-location.html has some really great information … Read more

Get Country of IP Address with PHP [duplicate]

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There are free, easy APIs you can use, like those: http://ipinfodb.com/ip_location_api.php http://www.ipgeo.com/api/ http://ip2.cc/ http://www.geobytes.com/IpLocator.htm https://iplocate.io/ and plenty others. Which one looks the most trustworthy is up to you 🙂 Otherwise, there are scripts which are based on local databases on your server. The database data needs to be updated regularly, though. Check out this one: … Read more

Algorithm to find all Latitude Longitude locations within a certain distance from a given Lat Lng location

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Start by Comparing the distance between latitudes. Each degree of latitude is approximately 69 miles (111 kilometers) apart. The range varies (due to the earth’s slightly ellipsoid shape) from 68.703 miles (110.567 km) at the equator to 69.407 (111.699 km) at the poles. The distance between two locations will be equal or larger than the … Read more

If I have ACCESS_FINE_LOCATION already, can I omit ACCESS_COARSE_LOCATION?

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https://developer.android.com/guide/topics/location/strategies.html#Permission Note: If you are using both NETWORK_PROVIDER and GPS_PROVIDER, then you need to request only the ACCESS_FINE_LOCATION permission, because it includes permission for both providers. (Permission for ACCESS_COARSE_LOCATION includes permission only for NETWORK_PROVIDER.) In short: yes, you don’t need ACCESS_COARSE_LOCATION if you’ve already defined ACCESS_FINE_LOCATION.

Why use the SQL Server 2008 geography data type?

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If you plan on doing any spatial computation, EF 5.0 allows LINQ Expressions like: private Facility GetNearestFacilityToJobsite(DbGeography jobsite) { var q1 = from f in context.Facilities let distance = f.Geocode.Distance(jobsite) where distance < 500 * 1609.344 orderby distance select f; return q1.FirstOrDefault(); } Then there is a very good reason to use Geography. Explanation of … Read more

Get the distance between two geo points

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Location loc1 = new Location(“”); loc1.setLatitude(lat1); loc1.setLongitude(lon1); Location loc2 = new Location(“”); loc2.setLatitude(lat2); loc2.setLongitude(lon2); float distanceInMeters = loc1.distanceTo(loc2); Reference: http://developer.android.com/reference/android/location/Location.html#distanceTo(android.location.Location)

android webview geolocation

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JavaScript must be enabled in the WebView, using WebSettings.setJavaScriptEnabled(true); The app needs permission ACCESS_FINE_LOCATION The WebView must use a custom WebChromeClient which implements WebChromeClient.onGeolocationPermissionsShowPrompt(). This method is called by the WebView to obtain permission to disclose the user’s location to JavaScript. (In the case of the browser, we show a prompt to the user.) The … Read more

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