Record fitness data

The Recording API lets your app request automated storage of sensor data in a battery-efficient manner by creating subscriptions. A subscription is associated with an Android app and consists of a fitness data type or a specific data source.

You can create multiple subscriptions for different data types or data sources in your app. Google Fit stores fitness data from active subscriptions, even when your app isn't running, and it restores these subscriptions when the system restarts.

The recorded data is available in the user's fitness history. If you also want to show the data in your app in real time, use the Sensors API together with the Recording API. To record fitness data with session metadata, use the Sessions API.

Subscribe to fitness data

To request background collection of sensor data in your app, use the RecordingClient.subscribe method, as shown in the following code snippet:

Fitness.getRecordingClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
    // This example shows subscribing to a DataType, across all possible data
    // sources. Alternatively, a specific DataSource can be used.
    .subscribe(DataType.TYPE_STEP_COUNT_DELTA)
    .addOnSuccessListener {
        Log.i(TAG, "Successfully subscribed!")
    }
    .addOnFailureListener { e ->
        Log.w(TAG, "There was a problem subscribing.", e)
    }

Fitness.getRecordingClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
        // This example shows subscribing to a DataType, across all possible
        // data sources. Alternatively, a specific DataSource can be used.
        .subscribe(DataType.TYPE_STEP_COUNT_DELTA)
        .addOnSuccessListener(unused ->
                Log.i(TAG, "Successfully subscribed!"))
        .addOnFailureListener( e ->
        Log.w(TAG, "There was a problem subscribing.", e));

If the subscription is added successfully, Google Fit stores fitness data of type TYPE_STEP_COUNT_DELTA in the fitness history on behalf of your app. This subscription appears in the list of active subscriptions for your app.

To subscribe to more types of fitness data in your app, follow the steps in the previous example but provide a different fitness data type each time.

List active subscriptions

To get a list of the active subscriptions for your app, use the RecordingClient.listSubscriptions method, as shown in the following code snippet:

Fitness.getRecordingClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
    .listSubscriptions()
    .addOnSuccessListener { subscriptions ->
        for (sc in subscriptions) {
            val dt = sc.dataType
            Log.i(TAG, "Active subscription for data type: ${dt.name}")
        }
    }

Fitness.getRecordingClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
        .listSubscriptions()
        .addOnSuccessListener(subscriptions -> {
            for (Subscription sc : subscriptions) {
                DataType dt = sc.getDataType();
                Log.i(TAG, "Active subscription for data type: ${dt.name}");
            }
    });
}

Unsubscribe from fitness data

To stop the collection of sensor data in your app, use the RecordingClient.unsubscribe method, as shown in the following code snippet:

Fitness.getRecordingClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
    // This example shows unsubscribing from a DataType. A DataSource should
    // be used where the subscription was to a DataSource. Alternatively, if
    // the client doesn't maintain its subscription information, they can use
    // an element from the return value of listSubscriptions(), which is of
    // type Subscription.
    .unsubscribe(DataType.TYPE_STEP_COUNT_DELTA)
    .addOnSuccessListener {
        Log.i(TAG,"Successfully unsubscribed.")
    }
    .addOnFailureListener { e->
        Log.w(TAG, "Failed to unsubscribe.")
        // Retry the unsubscribe request.
    }

Fitness.getRecordingClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
        // This example shows unsubscribing from a DataType. A DataSource
        // should be used where the subscription was to a DataSource.
        // Alternatively, if the client doesn’t maintain its subscription
        // information, they can use an element from the return value of
        // listSubscriptions(), which is of type Subscription.
        .unsubscribe(DataType.TYPE_STEP_COUNT_DELTA)
        .addOnSuccessListener(unused ->
            Log.i(TAG,"Successfully unsubscribed."))
        .addOnFailureListener(e -> {
            Log.w(TAG, "Failed to unsubscribe.");
            // Retry the unsubscribe request.
        });
}