public interface

# RecordingApi

com.google.android.gms.fitness.RecordingApi

## Class Overview

API which enables low-power, always-on background collection of sensor data into the Google Fit store. Sensor `subscriptions` are active when the requesting app is not running, and persisted through system restarts. Collected data can be queried using the `History API`.

Unlike the `Sensors API`, the Recording API does not support delivery of live sensor events. When live data is needed (such as when the app is open in the foreground), a listener should be added with the Sensors API. An app can have both an active subscription and an active listener at the same time. Unlike listeners, subscriptions don't need to be removed and re-added periodically.

The Recording API should be accessed from the `Fitness` entry point. Example:

         GoogleApiClient client = new GoogleApiClient.Builder(context)
             .addApi(Fitness.RECORDING_API)
             ...
             .build();
         client.connect();

         // Samples the user's activity once per minute.
         PendingResult<Status> pendingResult = Fitness.RecordingApi.subscribe(
             client, DataTypes.ACTIVITY_SAMPLE);

Creating a subscription for a particular data type requires user permission for access to data of that type, and permissions can be revoked by the user through Google Play Services settings.

## Summary

Public Methods
abstract PendingResult<ListSubscriptionsResult> | listSubscriptions(GoogleApiClient client) Reads all existing subscriptions for the current application.
abstract PendingResult<ListSubscriptionsResult> | listSubscriptions(GoogleApiClient client, DataType dataType) Reads all existing subscriptions for the current application to a particular data type.
abstract PendingResult<Status> | subscribe(GoogleApiClient client, DataType dataType) Subscribe to background collection of data of a specific type on behalf of the current application.
abstract PendingResult<Status> | subscribe(GoogleApiClient client, DataSource dataSource) Subscribe to background collection of data from a specific source on behalf of the current application.
abstract PendingResult<Status> | unsubscribe(GoogleApiClient client, DataSource dataSource) Unsubscribes from background data collection for the current application for a particular data source.
abstract PendingResult<Status> | unsubscribe(GoogleApiClient client, DataType dataType) Unsubscribes from background data collection for the current application for a particular data type.
abstract PendingResult<Status> | unsubscribe(GoogleApiClient client, Subscription subscription) Unsubscribes from background data collection for the current application.

## Public Methods

#### public abstract PendingResult<ListSubscriptionsResult> listSubscriptions (GoogleApiClient client)

Reads all existing subscriptions for the current application.

##### Parameters

client | an existing GoogleApiClient. It does not need to be connected at the time of this call, but the list operation will be delayed until the connection is complete.

##### Returns

- a pending result containing the found subscriptions.

#### public abstract PendingResult<ListSubscriptionsResult> listSubscriptions (GoogleApiClient client, DataType dataType)

Reads all existing subscriptions for the current application to a particular data type.

##### Parameters

client | an existing GoogleApiClient. It does not need to be connected at the time of this call, but the list operation will be delayed until the connection is complete.
dataType | list only subscriptions to this `data type`

##### Returns

- a pending result containing the found subscriptions.

#### public abstract PendingResult<Status> subscribe (GoogleApiClient client, DataType dataType)

Subscribe to background collection of data of a specific type on behalf of the current application.

Specifying a `data type` instead of a `data source` means that the default data source will be used to serve this request. The default is based on the data type and the available data sources. The default data source could be a combined data source, and its data might be averaged or filtered. As new data sources for the data type become available, the default data source might change.

After the subscription is successfully added, new data points in the requested data stream are persisted to the Google Fit store, and can be queried via the `History Api`.

Note that not all data sources are available at all times (external devices may go offline, for instance). If no data sources matching the subscription are currently available, the request will succeed silently and `SUCCESS_NO_DATA_SOURCES` will be returned. Once data sources become available, recording of data will start.

If after the subscription is added the data source becomes unavailable, the subscription remains active, and recording resumes once the data source becomes available again. Data points from the time interval when the data source was unavailable may or may not be recorded, depending on whether batching is supported.

If the requested subscription already exists, the request will be a no-op and `SUCCESS_ALREADY_SUBSCRIBED` will be returned.

##### Parameters

client | an existing GoogleApiClient. It does not need to be connected at the time of this call, but the subscribe operation will be delayed until the connection is complete.
dataType | the `data type` to subscribe to.

##### Throws

SecurityException | if a required permission is missing for the requested `DataType`.

#### public abstract PendingResult<Status> subscribe (GoogleApiClient client, DataSource dataSource)

Subscribe to background collection of data from a specific source on behalf of the current application.

After the subscription is successfully added, new data points in the requested data stream are persisted to the Google Fit store, and can be queried via the `History Api`.

If after the subscription is added the data source becomes unavailable (it may be disconnected or disabled, for instance), the subscription remains active. Once the data source becomes available again, new data points (and any data points that were batched while disconnected) are inserted.

##### Parameters

client | an existing GoogleApiClient. It does not need to be connected at the time of this call, but the subscribe operation will be delayed until the connection is complete.
dataSource | the `data source` to subscribe to.

##### Throws

SecurityException | if a required permission is missing for the requested `DataSource`.

#### public abstract PendingResult<Status> unsubscribe (GoogleApiClient client, DataSource dataSource)

Unsubscribes from background data collection for the current application for a particular data source. Should be called when the application no longer wishes to record data.

##### Parameters

client | an existing GoogleApiClient. Must be connected at the time of this call.
dataSource | the `data source` to unsubscribe from

##### Throws

IllegalStateException | if client is not connected

#### public abstract PendingResult<Status> unsubscribe (GoogleApiClient client, DataType dataType)

Unsubscribes from background data collection for the current application for a particular data type. Should be called when the application no longer wishes to record data.

##### Parameters

client | an existing GoogleApiClient. Must be connected at the time of this call.
dataType | the `data type` to remove. All subscriptions to the particular data type will be removed

##### Throws

IllegalStateException | if client is not connected

#### public abstract PendingResult<Status> unsubscribe (GoogleApiClient client, Subscription subscription)

Unsubscribes from background data collection for the current application. Should be called when the application no longer wishes to record data.

##### Parameters

client | an existing GoogleApiClient. Must be connected at the time of this call.
subscription | the `subscription` to remove

##### Throws

IllegalStateException | if client is not connected