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Invoking this method is equivalent to running [Is Feature Enabled](🔗) for each feature in the datafile sequentially.

This method takes into account the user `attributes` passed in, to determine if the user is part of the audience that qualifies for the experiment.

## Version

SDK v3.0 and higher

## Description

This method iterates through all feature flags and for each feature flag invokes [Is Feature Enabled](🔗). If a feature is enabled, this method adds the feature’s key to the return list.

## Parameters

The table below lists the required and optional parameters in Android.

**userId** _required_stringThe ID of the user to check.
**Attributes** _optional_mapA map of custom key-value string pairs specifying attributes for the user that are used for audience targeting. Non-string values are only supported in the 3.0 SDK and above.

## Returns

A list of keys corresponding to the features that are enabled for the user, or an empty list if no features could be found for the specified user.

## Examples

This section shows a simple example of how you can use the method.

## Exceptions


## Source files

The language/platform source files containing the implementation for Android is [OptimizelyClient.java](🔗).