WINDSHIELD_WIPERS_SWITCH
What it is
Windshield wipers switch.
Represents the position of the switch controlling the windshield wipers. The value of WINDSHIELD_WIPERS_SWITCH may not match the value of WINDSHIELD_WIPERS_STATE (e.g. WINDSHIELD_WIPERS_SWITCH = AUTO and WINDSHIELD_WIPERS_STATE = WindshieldWipersState#ON).
For each supported area ID, the VehicleAreaConfig#supportedEnumValues array must be defined unless all states in WindshieldWipersSwitch are supported (including OTHER, which is not recommended).
This property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs have the option to implement it as VehiclePropertyAccess.READ only.
If this property is implemented as VehiclePropertyAccess.READ_WRITE and the OTHER state is listed in the VehicleAreaConfig#supportedEnumValues array, then OTHER is not a supported value for writing. It is only a supported value for reading.
How the ID is built
A property ID is a 32-bit value packing four fields. Reading 0x13400bc7 apart:
| Field | Mask | Value | Means |
|---|---|---|---|
| Group | 0xf0000000 | 0x10000000 | SYSTEM |
| Area | 0x0f000000 | 0x03000000 | WINDOW |
| Type | 0x00ff0000 | 0x00400000 | INT32 |
| Ordinal | 0x0000ffff | 0x00000bc7 | 0xbc7 |
Reading it from an app
CarPropertyManager mgr = (CarPropertyManager)
car.getCarManager(Car.PROPERTY_SERVICE);
int value =
mgr.getIntProperty(VehiclePropertyIds.WINDSHIELD_WIPERS_SWITCH, 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.