# Attributes for the Android SDK

Set channel and contact attributes as key-value pairs for personalization.

For information about Attributes, including overview, use cases, and how to target Attributes, see [About Attributes](https://www.airship.com/docs/guides/audience/attributes/about/).

## Channel Attributes

Channel attributes are attributes managed on the Channel by the SDK.


#### Kotlin


```kotlin
Airship.channel.editAttributes {
    setAttribute("device_name", "Bobby's Phone")
    setAttribute("average_rating", 4.99)
    removeAttribute("vip_status")
}
```



#### Java


```java
Airship.getChannel().editAttributes()
    .setAttribute("device_name", "Bobby's Phone")
    .setAttribute("average_rating", 4.99)
    .removeAttribute("vip_status")
    .apply();
```




## Contact Attributes

Contact attributes are attributes managed on the Contact by the SDK.


#### Kotlin


```kotlin
Airship.contact.editAttributes {
    setAttribute("first_name", "Bobby")
    setAttribute("birthday", Date(524300400000))
}
```



#### Java


```java
Airship.getContact().editAttributes()
    .setAttribute("first_name", "Bobby")
    .setAttribute("birthday", Date(524300400000))
    .apply();
```




## JSON Attributes

JSON Attributes are data objects containing one or more string, number, date, or boolean key-value pairs.

You can set and remove JSON Attributes on a Channel or a Contact. 


#### Kotlin


```kotlin
Airship.contact.editAttributes {
    setAttribute(
        attribute = "attribute_name",
        instanceId = "instance_id",
        expiration = Date(),
        json = jsonMapOf(
            "key" to "value",
            "another_key" to "another_value"
        )
    )
}
```



## Verifying Attributes

To verify that attributes are set correctly, look up the channel or contact in the [Contact Management](https://www.airship.com/docs/guides/audience/contact-management/) view. Search by Channel ID or Named User ID to view the attributes associated with a channel or contact.