Just construct a btspp URL to localhost and the UUID, as the following code demonstrates: // use the service url to get the connection notifier notifier = (StreamConnectionNotifier) Connector.open( SERVICEURL ) // this will block until a connection is received StreamConnection connection = notifier.acceptAndOpen The BluetoothClient class implements this logic and provides methods to start and stop the listening process.
While this sounds complicated, JABWT's connection APIs hide the details. Static String SERVICEUUIDSTRING = 'C25DEA986354FCD69FC6A4' static UUID SERVICEUUID = new UUID( SERVICEUUIDSTRING, false ) static String SERVICENAME = 'Battlecruiser' // human-readable static String SERVICEURL = 'btspp://localhost:' + SERVICEUUID + ' name=' + SERVICENAME To advertise its availability, a client must create a service record with this specific service UUID. The UUIDGEN program on my MacBook does exactly that, and I've determined that Battlecruiser's service UUID shall be 'C25D5973-8B78-48EA-9863-54FCD69FC6A4'. Applying some simple algorithms to the generation of the UUID, incorporating the current time and the network address of your computer, for instance, practically guarantees that the UUID is truly unique. Therefore, the user can watch a more smoothly game on the screen.A UUID is basically an arbitrary number, and because they can be very large, just picking one at random gives a very good chance of getting a number no other Bluetooth developer in the galaxy is using. In order to improve the smooth game showing on the screen, I applied double buffering for the GameCanvas and I used animated characters that when the character move, Frame is changing. The Bluetooth architecture I have applied is point to multi-point architecture, which can support maximum 1 master and 7 slaves.
This multiplayer game can support up to 3 players on mobile phones of different model.
In my final year project, the Bluetooth Java Game created is an adventure Game called “Fight” that the players move around the map and fight with each other in real time.
And, Bluetooth is the most powerful (high bandwidth than Infra-red) and convenient (don’t need to place those in a straight line likes Infra-red) data communication between mobile phones. Java is the most common developing language for the mobile phone on the J2ME platform. Please use this identifier to cite or link to this item:
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