System Services

This table summarizes the system services available to your app. For further information, please refer to the webOS Service API documentation in the SDK.

Service	Brief Description
Accelerometer	Captures orientation events and accelerometer data.
Activity Manager	Schedules and prioritizes device activities--e.g., apps, services, tasks, network flows.
Alarms	Sets a timer to activate on the device either after a specified interval or at a specified date and time.
Application Manager	Invokes default handlers for the common resource types or basic device operations.
Bluetooth	Uses the Bluetooth Serial Port Protocol (SPP) to access certain Bluetooth devices.
Connection Manager	Gets connection status and subscribes to notifications of connection status changes.
db8	Interfaces to an embedded JSON database.
Display Manager	Gets events related to the status of the display.
Download Manager	Uploads and downloads files over HTTP.
Firewall	Opens a port on the firewall.
GPS	Gets the current location coordinates and registers for continuous updates.
In-App Payment	Allows apps to embed a store directly in their app and process payments for digital content.
Key Manager	Provides key management and cryptographic functionality.
Key Service	Gets keypress events from headset and volume buttons.
Media Permissions	Grants read-only access to media files stored in db8.
Power Management	Enters Sleep mode after period of inactivity.
Print Manager	Provides webOS printing services.
System Properties	Gets the named system properties, including device ID.
System Services	Accesses various system settings, including system time.
System Sounds	Plays audio feedback in response to user interaction. The sounds play when the message is played, with low latency.
Touch2Share	Allows devices to share data at a tap.
Zeroconf	Automatically discovers printers, computer services, and other local network device services.