Android Bluetooth Connection Secure Insecure
While looking for the solution of similar problem in my app, I have found this blog from code.google.com
It will help all those who are still looking for this problem solution on SO
http://mobisocial.stanford.edu/news/2011/03/bluetooth-reflection-and-legacy-nfc/ (link not working anymore)
The solution has become very simple now. Just include InsecureBluetooth.java in your project and change 2 lines in BluetoothChatService.java.
tmp = InsecureBluetooth.listenUsingRfcommWithServiceRecord(mAdapter, NAME, MY_UUID, true);
and
tmp = InsecureBluetooth.createRfcommSocketToServiceRecord(device, MY_UUID, true);
Thats it !
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DarkRyuu
Updated on June 04, 2022Comments
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DarkRyuu almost 2 years
I have been playing around with the bluetooth API for Android 2.2 (API level 8, HTC Desire) and had an app connecting to an embedded Bluetooth device using:
device.createRfcommSocketToServiceRecord(DEV_UUID);
This generated a pairing request as expected, however to streamline the connection process I wanted to avoid the user interaction when pairing so moved to API level 10 (HTC Desire with CyanogenMod 7) so I could use:
device.createInsecureRfcommSocketToServiceRecord(DEV_UUID);
When testing this also works as expected (connecting without prompting the user to pair), however when I try to create the secure RfcommSocket under API level 10 as before with 2.2 I get a connection refused exception...
java.io.IOException: Connection refused at android.bluetooth.BluetoothSocket.connectNative(Native Method) at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:204)
As far as I can tell this should still work in the same way, prompting the user to pair?
EDIT:
Just tried again using the following code and the outcome is the same (working for insecure but not for secure), I will try and get my hands on a stock 2.3 device to test on.
try { Method m = dev.getClass().getMethod("createInsecureRfcommSocketToServiceRecord", new Class[] { UUID.class } ); BluetoothSocket bs = (BluetoothSocket)m.invoke(dev, devUUID); Log.d("TEST", "Method Invoked"); bs.connect(); Log.d("TEST", "Connected to socket"); bs.close(); Log.d("TEST", "Closed Socket"); }