Class GattDescriptor

java.lang.Object
com.codename1.bluetooth.gatt.GattDescriptor
public class GattDescriptor extends Object

A descriptor of a remote GattCharacteristic. Note that the Client Characteristic Configuration descriptor (BluetoothUuid.CCCD) is managed automatically by GattCharacteristic.subscribe(GattNotificationListener) -- there is no need to write it manually.

Instances are constructed by the port during service discovery; application code never creates them.

  • Constructor Details

    • GattDescriptor

      public GattDescriptor(GattCharacteristic characteristic, BluetoothUuid uuid)
      Constructed by ports during service discovery; not application API.

  • Method Details

    • getUuid

      public BluetoothUuid getUuid()
      The UUID identifying this descriptor.

    • getCharacteristic

      public GattCharacteristic getCharacteristic()
      The characteristic this descriptor belongs to.

    • read

      public AsyncResource<byte[]> read()
      Reads the descriptor value. Resolves with the raw bytes on the EDT or fails with a BluetoothException.

    • write

      public AsyncResource<Boolean> write(byte[] value)
      Writes the descriptor value. Resolves true on the EDT once the remote acknowledged the write.

    • toString

      public String toString()
      Description copied from class: Object
      Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method. The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of: getClass().getName() + '@' + Integer.toHexString(hashCode())
      Overrides:
      toString in class Object