Mendip Data Systems

Database applications for businesses and schools

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Get Current Geolocation  

Version 2.5   28/05/2018

 

This utility can be used to determine your current geolocation in Access.

The attached zip file contains an Access file and 4 other items.

Each of these needs to be saved to the same folder

 

Download GetLocation  (zipped - approx 240 KB)

 

To use this, run the Access app and click 'Get Current Location'.

 

A browser window will open and ask permission to obtain your location.

 

Click the 'Allow Once' button within 3 seconds to do so

Your current location should be shown on the map & your latitude / longitude displayed.

 

The browser window will then close & the geolocation data shown in Access together with a static map centred on that. The map can be nudged or zoomed as required.

Reverse geocoding is also used to obtain a shortened address for the location which should be accurate to within a few metres.

 

If you don't click the button in time, you will be offered further 'chances' to do so

 

The example database was created in Access 2010 32-bit and Windows 10.

However, it has been successfully used in all versions of Access from 2007 through to 2016 (both 32-bit & 64-bit). It works in any version of Windows from Win7 SP1 onwards (but see point 3 below)

 

NOTE:

There are some caveats:

1. You must switch on location services in Windows settings / Control Panel

2. Your computer must contain a geosensor (all tablets / many laptops / not many desktops)

3. There is a bug affecting Internet Explorer in the latest update 1803 to Windows 10.

The browser window will report "Error - the geolocation service failed"

It doesn't matter which browser is your default, IE is always used by Access for browser related code.

I reported this bug to Microsoft in May 2018 and a fix was released for the 12 June update - KB4284835.

However I have found the fix doesn't work on all computers. MS have again been informed

4. The form includes an ActiveX slider control - this will not work if you have disabled ActiveX completely in Access settings

 

If you cannot get your location for any of the above reasons (or to do this for another location), you can obtain latitude & longitude data in other ways e.g.

a) Open Google maps to your current location

b) Use GPS data from a mobile phone or other device with a geosensor

c) Use a Windows app such as Sensor List or Geolocator (free from the Windows Store)

d) Take a photo using your PC webcam then use the GPS data from the photo properties

Enter the values on the form then click 'Search'

 

IMPORTANT NOTE: 

The geolocation code & map requires a free Google Maps API key.

 

The supplied API key will stop working on (or before) 16 July 2018 (postponed from 11 June) when Google will require users to enable billing and associate it with all Google Maps Platform projects. However there is a fairly generous monthly free allowance & small/medium users of Google Map APIs should still be able to download various maps without incurring charges

 

Please follow the instructions on this form to obtain your own free API key from https://cloud.google.com/maps-platform and use it in place of the existing key.

You will need to enable THREE map APIs: Static Maps / Javascript Maps / Geocoding

 

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FURTHER INFO:

An enhanced version of this utility is included in the UK Postal Address Finder application

It is used to locate the nearest postcodes for the current location (or any other geolocation).

That info is then used to find nearby places within a specified radius e.g. restaurants within 500 metres

For further details, please see the attached video

 

Download: Postcode Geolocation Video  (zipped - approx 1.7 MB)

LocationMap IEMap1 IEMap2

Click any image to view a larger version ...

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