Client API. The Codename One framework your app is built on: this runs on the device, not in a backend.

public interface GattServerListener

Receives the events of a local GattServer: requests from centrals, subscription changes and central connections. All methods are invoked on the EDT. Extend GattServerAdapter to override only the events you care about.

Methods

`public abstract void characteristicReadRequest(GattReadRequest request)`	A central reads a characteristic without a static value; answer via [GattReadRequest#respond(byte[])] or `GattReadRequest.reject`.
`public abstract void characteristicWriteRequest(GattWriteRequest request)`	A central writes a characteristic; acknowledge via `GattWriteRequest.respond()` when required.
`public abstract void descriptorReadRequest(GattReadRequest request)`	A central reads a descriptor without a static value.
`public abstract void descriptorWriteRequest(GattWriteRequest request)`	A central writes a descriptor.
`public abstract void subscriptionChanged(BleCentral central, GattLocalCharacteristic characteristic, boolean subscribed)`	A central subscribed to or unsubscribed from a characteristic’s notifications.
`public abstract void centralConnected(BleCentral central)`	A central connected to the local server.
`public abstract void centralDisconnected(BleCentral central)`	A central disconnected from the local server.

Method details

characteristicReadRequest

public abstract void characteristicReadRequest(GattReadRequest request)

A central reads a characteristic without a static value; answer via [GattReadRequest#respond(byte[])] or GattReadRequest.reject.

characteristicWriteRequest

public abstract void characteristicWriteRequest(GattWriteRequest request)

A central writes a characteristic; acknowledge via GattWriteRequest.respond() when required.

descriptorReadRequest

public abstract void descriptorReadRequest(GattReadRequest request)

A central reads a descriptor without a static value. Platform note: iOS serves descriptors from their static values only, so this never fires there – always give local descriptors a static value for cross-platform behavior.

descriptorWriteRequest

public abstract void descriptorWriteRequest(GattWriteRequest request)

A central writes a descriptor. Never fires on iOS – see descriptorReadRequest(GattReadRequest).

subscriptionChanged

public abstract void subscriptionChanged(BleCentral central, GattLocalCharacteristic characteristic, boolean subscribed)

A central subscribed to or unsubscribed from a characteristic’s notifications.

centralConnected

public abstract void centralConnected(BleCentral central)

A central connected to the local server.

centralDisconnected

public abstract void centralDisconnected(BleCentral central)

A central disconnected from the local server.