harmony 鸿蒙ServiceAbility Lifecycle

ServiceAbility Lifecycle

You can override lifecycle callbacks (described in the table below) for ServiceAbility based on service requirements.

Table 1 ServiceAbility lifecycle callbacks

API	Description
onStart(): void	Called to initialize a ServiceAbility when the ServiceAbility is being created. This callback is invoked only once in the entire lifecycle of a ServiceAbility.
onCommand(want: Want, startId: number): void	Called every time a ServiceAbility is started on the client. You can collect calling statistics and perform initialization operations in this callback.
onConnect(want: Want): rpc.RemoteObject	Called when the ServiceAbility is connected.
onDisconnect(want: Want): void	Called when the connection to the ServiceAbility is disconnected.
onStop(): void	Called when the ServiceAbility is being destroyed. You should override this callback for your ServiceAbility to clear its resources, such as threads and registered listeners.