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dbus.md

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DBUS interface

Anbox uses DBUS interface for launching applications (anbox launch command) and for setting sensor values. You can query available interfaces using this command:

dbus-send --session --dest=org.anbox --type=method_call --print-reply /org/anbox org.freedesktop.DBus.Introspectable.Introspect

In particular you will see org.anbox.ApplicationManager and org.anbox.Sensors interfaces.

Launching applications

Launching applications is done using org.anbox.ApplicationManager DBUS interface. To launch application you can use the following command:

anbox launch --package=org.anbox.appmgr --component=org.anbox.appmgr.AppViewActivity

This command internally uses DBUS to contact session manager and calls Launch method to launch specified component. Unfortunately due to limitations of dbus-send (in particular limited argument type support) this cannot be done using the generic dbus command line interface.

Sensor values

You can get or set sensor values using org.anbox.Sensors interface. Note that there is no corresponding anbox command to use this interface.

Available sensors

You can check available sensors using dbus-send:

dbus-send --session --dest=org.anbox --type=method_call --print-reply /org/anbox org.freedesktop.DBus.Introspectable.Introspect

At the time of this writing the following sensors are supported:

  • Acceleration
  • Humidity
  • Light
  • MagneticField
  • Orientation
  • Pressure
  • Proximity
  • Temperature

Get/set using dbus-send

Use the following command to set temperature to 25.2 Celsius:

dbus-send --session --dest=org.anbox --print-reply /org/anbox org.freedesktop.DBus.Properties.Set string:org.anbox.Sensors string:Temperature variant:double:25.2

To get current sensor setting call:

dbus-send --session --dest=org.anbox --print-reply /org/anbox org.freedesktop.DBus.Properties.Get string:org.anbox.Sensors string:Temperature

Get/set using Python

The dbus-send has limitations in its type support therefore to manipulate some sensor values you will need to use other tools. One of the availble tools is pydbus for Python. Here goes sample Python 3 script that changes composite value for orientation sensor.

#!/usr/bin/python3
from pydbus import SessionBus
bus = SessionBus()
proxy = bus.get("org.anbox", "/org/anbox")

proxy['org.anbox.Sensors'].Orientation=(proxy['org.anbox.Sensors'].Orientation[0]+1,0,0)
print (proxy['org.anbox.Sensors'].Orientation)