send/receive data via Bluetooth

Question

I'm trying to send/receive a string from an android device. I've been googling for the last 3 hours and I can't find anything that just works. the closest I got was this: fella

and I get these errors:

02-19 15:44:17.680    4680-4680/com.example.jelle.bluetoothconnector W/System.err﹕ at com.example.jelle.bluetoothconnector.BluetoothConnection.init(BluetoothConnection.java:38)
02-19 15:44:17.680    4680-4680/com.example.jelle.bluetoothconnector W/System.err﹕ at com.example.jelle.bluetoothconnector.BluetoothConnection.<init>(BluetoothConnection.java:25)
02-19 15:44:17.680    4680-4680/com.example.jelle.bluetoothconnector W/System.err﹕ at com.example.jelle.bluetoothconnector.ConnectorActivity.btnBluetooth_onCLick(ConnectorActivity.java:92)
02-19 15:44:17.680    4680-4680/com.example.jelle.bluetoothconnector W/System.err﹕ at java.lang.reflect.Method.invoke(Native Method)
02-19 15:44:17.680    4680-4680/com.example.jelle.bluetoothconnector W/System.err﹕ at java.lang.reflect.Method.invoke(Method.java:372)

can anyone help me? I just need some code that can send/receive a string via bluetooth to get me started

Thanks!

Solution

The best and most comprehensive example is Android's official bluetooth chat example. You probably do not need to change most of the stuff. See this: https://github.com/googlesamples/android-BluetoothChat