Sideband/sbapp/plyer/facades/gps.py

97 lines
2.6 KiB
Python

'''
GPS
====
.. versionadded:: 1.1
.. note::
On Android `INTERNET`, `ACCESS_FINE_LOCATION`, `ACCESS_COARSE_LOCATION`
permissions are needed.
.. note::
On iOS `NSLocationWhenInUseUsageDescription` key is required for app to
display geolocation usage permission prompt. Key can be added in Xcode
target `info` section or in ``Resources/<YourApp>-info.plist``.
App background mode (`on_pause`) also must be supported.
You need to set a `on_location` callback with the :meth:`configure` method.
This callback will receive a couple of keywords / values, that might be
different depending of their availability on the targeted platform.
Lat and lon are always available.
- lat: latitude of the last location, in degrees
- lon: longitude of the last location, in degrees
- speed: speed of the user, in meters/second over ground
- bearing: bearing in degrees
- altitude: altitude in meters above the sea level
Here is an example of the usage of gps::
from plyer import gps
def print_locations(**kwargs):
print 'lat: {lat}, lon: {lon}'.format(**kwargs)
gps.configure(on_location=print_locations)
gps.start()
# later
gps.stop()
Supported Platforms
-------------------
Android, iOS
'''
class GPS:
'''
GPS facade.
'''
def configure(self, on_location, on_status=None):
'''
Configure the GPS object. This method should be called before
:meth:`start`.
:param on_location: Function to call when receiving a new location
:param on_status: Function to call when a status message is received
:type on_location: callable, multiples keys/value will be passed.
:type on_status: callable, args are "message-type", "status"
.. warning::
The `on_location` and `on_status` callables might be called from
another thread than the thread used for creating the GPS object.
'''
self.on_location = on_location
self.on_status = on_status
self._configure()
def start(self, minTime=1000, minDistance=1):
'''
Start the GPS location updates.
Expects 2 parameters:
minTime: milliseconds. (float)
minDistance: meters. (float)
'''
self._start(minTime=minTime, minDistance=minDistance)
def stop(self):
'''
Stop the GPS location updates.
'''
self._stop()
# private
def _configure(self):
raise NotImplementedError()
def _start(self, **kwargs):
raise NotImplementedError()
def _stop(self):
raise NotImplementedError()