Dictionary of arguments passed to the DeviceMotion.startDeviceMotionUpdatesUsingReferenceFrame() method.
NOTE This is an abstract type. Any object meeting this description can be used where this type is used.
A constant identifying the reference frame to use for device-motion updates.
A constant identifying the reference frame to use for device-motion updates.
Could be Modules.CoreMotion.ATTITUDE_REFERENCE_FRAME_X_ARBITRARY_Z_VERTICAL, Modules.CoreMotion.ATTITUDE_REFERENCE_FRAME_X_ARBITRARY_CORRECTED_Z_VERTICAL, Modules.CoreMotion.ATTITUDE_REFERENCE_FRAME_X_MAGNETIC_NORTH_Z_VERTICAL, or Modules.CoreMotion.ATTITUDE_REFERENCE_FRAME_X_TRUE_NORTH_Z_VERTICAL.