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BEAM-on-device mobile framework for Elixir
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Files
lib/mob/location.ex
defmodule Mob.Location do
@moduledoc """
Device location (GPS / network).
Requires `:location` permission (request via `Mob.Permissions.request/2`).
Location updates arrive as:
handle_info({:location, %{lat: lat, lon: lon, accuracy: acc, altitude: alt}}, socket)
handle_info({:location, :error, reason}, socket)
iOS: `CLLocationManager`. Android: `FusedLocationProviderClient`.
"""
@type accuracy :: :high | :balanced | :low
@doc """
Request a single location fix, then stop.
"""
@spec get_once(Mob.Socket.t()) :: Mob.Socket.t()
def get_once(socket) do
:mob_nif.location_get_once()
socket
end
@doc """
Start continuous location updates.
Options:
- `accuracy: :high | :balanced | :low` (default `:balanced`)
Call `stop/1` when done to save battery.
"""
@spec start(Mob.Socket.t(), keyword()) :: Mob.Socket.t()
def start(socket, opts \\ []) do
accuracy = Keyword.get(opts, :accuracy, :balanced)
:mob_nif.location_start(accuracy)
socket
end
@doc """
Stop continuous location updates.
"""
@spec stop(Mob.Socket.t()) :: Mob.Socket.t()
def stop(socket) do
:mob_nif.location_stop()
socket
end
end