class Listener

Defined at line 786 of file fidling/gen/sdk/fidl/fuchsia.ui.activity/fuchsia.ui.activity/hlcpp/fuchsia/ui/activity/cpp/fidl.h

The Listener protocol subscribes to changes in the system's activity

state. Clients which care about the activity state of the system are

expected to implement this protocol and subscribe via Provider.WatchState.

Public Methods

void ~Listener ()

void OnStateChanged (::fuchsia::ui::activity::State state, int64_t transition_time, OnStateChangedCallback callback)

Callback that is invoked whenever the system state changes.

The Listener is expected to acknowledge each call explicitly and will

not receive new state until this acknowledgement is done.