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'''
Android gravity
---------------------
'''
from jnius import autoclass
from jnius import cast
from jnius import java_method
from jnius import PythonJavaClass
from plyer.facades import Gravity
from plyer.platforms.android import activity
Context = autoclass('android.content.Context')
Sensor = autoclass('android.hardware.Sensor')
SensorManager = autoclass('android.hardware.SensorManager')
class GravitySensorListener(PythonJavaClass):
__javainterfaces__ = ['android/hardware/SensorEventListener']
def __init__(self):
super().__init__()
service = activity.getSystemService(Context.SENSOR_SERVICE)
self.SensorManager = cast('android.hardware.SensorManager', service)
self.sensor = self.SensorManager.getDefaultSensor(
Sensor.TYPE_GRAVITY
)
self.values = [None, None, None]
def enable(self):
self.SensorManager.registerListener(
self,
self.sensor,
SensorManager.SENSOR_DELAY_NORMAL
)
def disable(self):
self.SensorManager.unregisterListener(self, self.sensor)
@java_method('(Landroid/hardware/SensorEvent;)V')
def onSensorChanged(self, event):
self.values = event.values[:3]
@java_method('(Landroid/hardware/Sensor;I)V')
def onAccuracyChanged(self, sensor, accuracy):
pass
class AndroidGravity(Gravity):
def __init__(self):
super().__init__()
self.state = False
def _enable(self):
if not self.state:
self.listener = GravitySensorListener()
self.listener.enable()
self.state = True
def _disable(self):
if self.state:
self.state = False
self.listener.disable()
del self.listener
def _get_gravity(self):
if self.state:
return tuple(self.listener.values)
else:
return (None, None, None)
def __del__(self):
if self.state:
self._disable()
super().__del__()
def instance():
return AndroidGravity()
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