This interface is deprecated.
Use ChannelClient
.
Client interface for Wearable Channel API. Allows apps on a wearable device to send and receive data from other wearable nodes.
Channels are bidirectional. Each side, both the initiator and the receiver may both read
and write to the channel by using Channel.getOutputStream(GoogleApiClient)
and Channel.getInputStream(GoogleApiClient)
. Once a channel is established, the API
for the initiator and receiver are identical.
Channels are only available when the wearable nodes are connected. When the remote node
disconnects, all existing channels will be closed. Any listeners (added through addListener(GoogleApiClient, ChannelListener)
and any installed WearableListenerService
)
will be notified of the channel closing.
Nested Class Summary
ChannelApi.ChannelListener.onChannelClosed(Channel, int, int)
, and other
methods on the ChannelApi.ChannelListener
interface. Constant Summary
| String | ACTION_CHANNEL_EVENT | Channel action for use in listener filters. |
Public Method Summary
| abstract PendingResult < Status > | addListener
( GoogleApiClient
client, ChannelApi.ChannelListener
listener)
Registers a listener to be notified of channel events.
|
| abstract PendingResult < ChannelApi.OpenChannelResult > | openChannel
( GoogleApiClient
client, String
nodeId, String
path)
Opens a channel to exchange data with a remote node.
|
| abstract PendingResult < Status > | removeListener
( GoogleApiClient
client, ChannelApi.ChannelListener
listener)
Removes a listener which was previously added through
addListener(GoogleApiClient, ChannelListener)
. |
Constants
public static final String ACTION_CHANNEL_EVENT
Channel action for use in listener filters.
See Also
Public Methods
public abstract PendingResult < Status > addListener ( GoogleApiClient client, ChannelApi.ChannelListener listener)
Registers a listener to be notified of channel events. Calls to this method should
be balanced with calls to removeListener(GoogleApiClient, ChannelListener)
to avoid leaking
resources.
Listener events will be called on the main thread, or the handler specified on client
when it was built (using GoogleApiClient.Builder.setHandler(Handler)
).
Callers wishing to be notified of events in the background should use WearableListenerService
.
Parameters
| client | a connected client |
|---|---|
| listener | a listener which will be notified of changes to any channel |
public abstract PendingResult < ChannelApi.OpenChannelResult > openChannel ( GoogleApiClient client, String nodeId, String path)
Opens a channel to exchange data with a remote node.
Channel which are no longer needed should be closed using Channel.close(GoogleApiClient)
.
This call involves a network round trip, so may be long running. client
must remain connected during that time, or the request will be cancelled (like any
other Play Services API calls).
Parameters
| client | a connected client |
|---|---|
| nodeId | the node ID of a wearable node, as returned from NodeApi.getConnectedNodes(GoogleApiClient)
|
| path | an app-specific identifier for the channel |
public abstract PendingResult < Status > removeListener ( GoogleApiClient client, ChannelApi.ChannelListener listener)
Removes a listener which was previously added through addListener(GoogleApiClient, ChannelListener)
.
Parameters
| client | a connected client |
|---|---|
| listener | a listener which was added using addListener(GoogleApiClient, ChannelListener)
|
