Prompt Title: Android Bluetooth Printing Sample.

Sure, here's a simple example of how to print from an Android device using Bluetooth:

1. First, make sure your Android device is paired with the Bluetooth printer you want to use. Go to Settings > Bluetooth and pair the devices.

2. Next, you'll need to find the Bluetooth device's MAC address. This can usually be found in the device's settings or manual.

3. In your Android app, create a new BluetoothSocket object and connect it to the printer using its MAC address:

javaCopy code
BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
BluetoothDevice printer = bluetoothAdapter.getRemoteDevice("00:11:22:33:44:55");
BluetoothSocket socket = printer.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
socket.connect();

4. Once you're connected, you can send print commands to the printer using the OutputStream of the BluetoothSocket:

javaCopy code
OutputStream outStream = socket.getOutputStream();
String msg = "Hello, world!";
byte[] msgBytes = msg.getBytes();
outStream.write(msgBytes);

5. Don't forget to close the socket when you're done printing:

javaCopy code
socket.close();

That's it! Of course, the exact details will depend on the specific printer you're using and the format of the print data you want to send, but this should give you a basic idea of how to get started with Bluetooth printing on Android.