I couldn’t let user “tri” have all the fun, so in response to his Windows phone app, I wrote an Android Bluetooth demo. (Full disclosure: User tri is my brother - we have a bit of a competition going on 
)
The controller app is running on my Samsung Galaxy Note 3 and I wrote it using Android Studio on Mac OS X. I don’t have the nifty RC-style widget tri has, but I added buttons to control most basic Sparki features. Sparki pretty much behaves the same as if I were controlling him out of the box with the IR remote.
Thanks to tri’s sketch and some Google Android Bluetooth examples, I was off to a good start. I did run issues connecting the two devices and found that you need to know Sparki’s Bluetooth module’s UUID in order to communicate with it. I was able to get it while debugging my code and inspecting the BluetoothDevice instances.
private final String UUID = "00001101-0000-1000-8000-00805f9b34fb";
private void connect(BluetoothAdapter adapter) {
final String NAME = "ArcBotics";
Set<BluetoothDevice> devices = adapter.getBondedDevices();
for (BluetoothDevice device : devices) {
if (NAME.equals(device.getName())) {
// use "device" below
}
}
if (!found)
Log.e(TAG, "Could not connect because device " + NAME + " was not found");
}
// ...
BluetoothSocket socket = device.createRfcommSocketToServiceRecord(UUID.fromString(UUID));Like tri, I also paired my phone to Sparki using the “ArcBotics” device with code “0000”.
