Dependencies and Prerequisites
- Creating Wearable Apps > Set Up an Android Wear Emulator or Device
- Creating Wearable Apps>Creating a Project
Note: A Wear app can communicate with a phone app using the Data Layer API, but connecting to a network using this API is discouraged.
A minimal client, as shown in the following example, is enough to begin. See Accessing Google Play services APIs for additional information:
DataClient mDataClient = Wearable.getDataClient(context);
The context can be any valid Android context. If you are using the API
within the scope of an Activity, use the
getDataClient(activity) method of the
Wearable class, which allows certain interactions to appear
as dialogs rather than as notifications, e.g., if the user is asked to
update their version of Google Play services.
By default, callbacks to listeners are made on the app's main UI thread.
To have callbacks made on a different thread, use a
WearableOptions object to specify a custom
WearableOptions options = new WearableOptions.Builder().setLooper(myLooper).build(); DataClient mDataClient = Wearable.getDataClient(context or activity, options);
Wearable API clients, such as
MessageClient, are inexpensive to create and don't need to be
created only once and held onto. Use the style that suits your app. The client
state, such as the set of registered listeners, is shared across all clients,
and is preserved if Google Play services is updated while an app is