# Interface ConnectionListener

public interface ConnectionListener
Observes `BlePeripheral` connection state transitions registered via `BlePeripheral.addConnectionListener(ConnectionListener)`. Single abstract method so application code can pass a lambda. Always invoked on the EDT.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `connectionStateChanged(ConnectionEvent event)`
  Fired on the EDT for every connection state transition.

- ## Method Details

  - ### connectionStateChanged

    void connectionStateChanged(ConnectionEvent event)
    Fired on the EDT for every connection state transition.