# Interface GattNotificationListener

public interface GattNotificationListener
Receives characteristic value changes (notifications and indications) after subscribing via `GattCharacteristic.subscribe(GattNotificationListener)`. Single abstract method so application code can pass a lambda. Always invoked on the EDT.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `valueChanged(GattCharacteristic characteristic, byte[] value)`
  Fired on the EDT for every notification/indication received while subscribed.

- ## Method Details

  - ### valueChanged

    void valueChanged(GattCharacteristic characteristic, byte[] value)
    Fired on the EDT for every notification/indication received while subscribed.