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Setting custom attributes for Android and FireOS

Braze provides methods for assigning attributes to users. You’ll be able to filter and segment your users according to these attributes on the dashboard.

Before implementation, be sure to review examples of the segmentation options afforded by custom events, custom attributes, and purchase events in our analytics overview, as well as our notes on event naming conventions.

Assigning default user attributes

To assign attributes to your users, call the getCurrentUser() method on your Braze instance to get a reference to the current user of your app. Once you have a reference to the current user, you can call methods to set predefined or custom attributes.

Braze provides predefined methods for setting the following user attributes within the BrazeUser class. Refer to our KDoc for method specifications:

  • First name
  • Last name
  • Country
  • Language
  • Date of birth
  • Email
  • Gender
  • Home city
  • Phone number
  • Facebook data
  • Twitter data

All string values such as first name, last name, country, and home city are limited to 255 characters.

Setting default attributes

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Braze.getInstance(context).getCurrentUser().setFirstName("first_name");
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Braze.getInstance(context).currentUser?.setFirstName("first_name")

Assigning custom user attributes

In addition to our predefined user attribute methods, Braze also provides custom attributes to track data from your applications. Braze custom attributes can be set with the following data types:

  • Strings
  • Arrays
    • Includes methods to set arrays, add items to existing arrays, and delete items from existing arrays.
  • Integers
  • Booleans
  • Dates
  • Longs
  • Floats
  • Doubles

Custom attribute keys and values have a maximum length of 255 characters. Longer strings will be truncated to 255 characters.

Full method specifications for custom attributes can be found here within the BrazeUser class in our KDoc.

Setting custom attribute values

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Braze.getInstance(context).getCurrentUser().setCustomUserAttribute("your_attribute_key", "your_attribute_value");
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Braze.getInstance(context).currentUser?.setCustomUserAttribute("your_attribute_key", "your_attribute_value")
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Braze.getInstance(context).getCurrentUser().setCustomUserAttribute, "your_attribute_key", YOUR_INT_VALUE);
// Integer attributes may also be incremented using code like the following:
Braze.getInstance(context).getCurrentUser().incrementCustomUserAttribute("your_attribute_key", YOUR_INCREMENT_VALUE);
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Braze.getInstance(context).currentUser?.setCustomUserAttribute, "your_attribute_key", YOUR_INT_VALUE)
// Integer attributes may also be incremented using code like the following:
Braze.getInstance(context).currentUser?.incrementCustomUserAttribute("your_attribute_key", YOUR_INCREMENT_VALUE)
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Braze.getInstance(context).getCurrentUser().setCustomUserAttribute("your_attribute_key", YOUR_BOOLEAN_VALUE);
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Braze.getInstance(context).currentUser?.setCustomUserAttribute("your_attribute_key", YOUR_BOOLEAN_VALUE)
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Braze.getInstance(context).getCurrentUser().setCustomUserAttribute("your_attribute_key", YOUR_LONG_VALUE);
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Braze.getInstance(context).currentUser?.setCustomUserAttribute("your_attribute_key", YOUR_LONG_VALUE)
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Braze.getInstance(context).getCurrentUser().setCustomUserAttribute("your_attribute_key", YOUR_FLOAT_VALUE);
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Braze.getInstance(context).currentUser?.setCustomUserAttribute("your_attribute_key", YOUR_FLOAT_VALUE)
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Braze.getInstance(context).getCurrentUser().setCustomUserAttribute("your_attribute_key", YOUR_DOUBLE_VALUE);
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Braze.getInstance(context).currentUser?.setCustomUserAttribute("your_attribute_key", YOUR_DOUBLE_VALUE)
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Braze.getInstance(context).getCurrentUser().setCustomUserAttribute("your_attribute_key", YOUR_DATE_VALUE);
// This method will assign the current time to a custom attribute at the time the method is called:
Braze.getInstance(context).getCurrentUser().setCustomUserAttributeToNow("your_attribute_key");
// This method will assign the date specified by SECONDS_FROM_EPOCH to a custom attribute:
Braze.getInstance(context).getCurrentUser().setCustomUserAttributeToSecondsFromEpoch("your_attribute_key", SECONDS_FROM_EPOCH);
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Braze.getInstance(context).currentUser?.setCustomUserAttribute("your_attribute_key", YOUR_DATE_VALUE)
// This method will assign the current time to a custom attribute at the time the method is called:
Braze.getInstance(context).currentUser?.setCustomUserAttributeToNow("your_attribute_key")
// This method will assign the date specified by SECONDS_FROM_EPOCH to a custom attribute:
Braze.getInstance(context).currentUser?.setCustomUserAttributeToSecondsFromEpoch("your_attribute_key", SECONDS_FROM_EPOCH)

The maximum number of elements in custom attribute arrays defaults to 25. The maximum for individual arrays can be increased to up to 100 in the Braze dashboard, under Manage Settings > Custom Attributes. Arrays exceeding the maximum number of elements will be truncated to contain the maximum number of elements. For more information on custom attribute arrays and their behavior, see our documentation on Arrays.

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// Setting a custom attribute with an array value
Braze.getInstance(context).getCurrentUser().setCustomAttributeArray("your_attribute_key", testSetArray);
// Adding to a custom attribute with an array value
Braze.getInstance(context).getCurrentUser().addToCustomAttributeArray("your_attribute_key", "value_to_add");
// Removing a value from an array type custom attribute
Braze.getInstance(context).getCurrentUser().removeFromCustomAttributeArray("your_attribute_key", "value_to_remove");
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// Setting a custom attribute with an array value
Braze.getInstance(context).currentUser?.setCustomAttributeArray("your_attribute_key", testSetArray)
// Adding to a custom attribute with an array value
Braze.getInstance(context).currentUser?.addToCustomAttributeArray("your_attribute_key", "value_to_add")
// Removing a value from an array type custom attribute
Braze.getInstance(context).currentUser?.removeFromCustomAttributeArray("your_attribute_key", "value_to_remove")

Unsetting a custom attribute

Custom attributes can also be unset using the following method:

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Braze.getInstance(context).getCurrentUser().unsetCustomUserAttribute("your_attribute_key");
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Braze.getInstance(context).currentUser?.unsetCustomUserAttribute("your_attribute_key")

Custom attribute via the REST API

You can also use our REST API to set user attributes. To do so, refer to the User API documentation.

Setting up user subscriptions

To set up a subscription for your users (either email or push), call the functions setEmailNotificationSubscriptionType() or setPushNotificationSubscriptionType(), respectively. Both of these functions take the enum type NotificationSubscriptionType as arguments. This type has three different states:

Subscription status Definition
OPTED_IN Subscribed, and explicitly opted in
SUBSCRIBED Subscribed, but not explicitly opted in
UNSUBSCRIBED Unsubscribed and/or explicitly opted out

Setting email subscriptions

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Braze.getInstance(context).getCurrentUser().setEmailNotificationSubscriptionType(emailNotificationSubscriptionType);
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Braze.getInstance(context).currentUser?.setEmailNotificationSubscriptionType(emailNotificationSubscriptionType)

Setting push notification subscription

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Braze.getInstance(context).getCurrentUser().setPushNotificationSubscriptionType(pushNotificationSubscriptionType);
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Braze.getInstance(context).currentUser?.setPushNotificationSubscriptionType(pushNotificationSubscriptionType)
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