standard.getGeolocation

Returns the Global Positioning System (GPS) location of a device.

Syntax

ui.Interface.frontCall("standard", "getGeolocation",
   [], [status, latitude, longitude] )
  1. status - Holds the status of the front call execution.
  2. latitude - Holds the current latitude.
  3. longitude - Holds the current longitude.

Usage

The "getGeolocation" front call returns the current location of the device, based on the current GPS information.

Important:

To be usable with GBC, this front call needs a secure context / front-end connection, in addition to mobile device permissions, when required. A secure context is achieved by using the GAS via HTTPS, via localhost on the same machine, or running direct via GDC-UR.

Important:

For GMA / Android™, using the getGeolocation front call needs the android.permission.ACCESS_FINE_LOCATION and android.permission.ACCESS_COARSE_LOCATION Dangerous Permissions to be specified when building the APK. See Android permissions for more details.

The possible values returned in the status parameter are:
  • "ok": The device location was found.
  • In case of failure, the status variable contains the error description, for example, "location services not enabled".

It is recommended that the returned coordinates are stored in FLOAT variables.

If the device's location cannot be found within a given period, the front call returns an error status.

Example

DEFINE status STRING, latitude, longitude FLOAT
CALL ui.Interface.frontCall("standard", "getGeolocation",
     [], [status, latitude, longitude] )
MESSAGE SFMT(
  "Geo location: (status=%1) Latitude=%2 Longitude=%3",
  status, latitude, longitude )