SEAT_HEADREST_FORE_AFT_POS
What it is
Headrest fore/aft position
The maxInt32Value and minInt32Value in VehicleAreaConfig must be defined. All integers between minInt32Value and maxInt32Value must be supported.
The minInt32Value indicates the headrest is in its rearward-most linear position. The maxInt32Value indicates the headrest is in its forward-most linear position.
Values in between minInt32Value and maxInt32Value indicate a transition state between the forward and rearward positions.
This property is not in any particular unit but in a specified range of relative positions.
This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs have the option to implement it as VehiclePropertyAccess.READ only.
How the ID is built
A property ID is a 32-bit value packing four fields. Reading 0x15400b99 apart:
| Field | Mask | Value | Means |
|---|---|---|---|
| Group | 0xf0000000 | 0x10000000 | SYSTEM |
| Area | 0x0f000000 | 0x05000000 | SEAT |
| Type | 0x00ff0000 | 0x00400000 | INT32 |
| Ordinal | 0x0000ffff | 0x00000b99 | 0xb99 |
Reading it from an app
CarPropertyManager mgr = (CarPropertyManager)
car.getCarManager(Car.PROPERTY_SERVICE);
int value =
mgr.getIntProperty(VehiclePropertyIds.SEAT_HEADREST_FORE_AFT_POS, areaId);This property can be read and written, though an OEM may implement it as read-only. It fires a callback whenever the value changes.