Bluetooth connection on Android ICS not possible
android, bluetooth, galaxy-tab
Solution
Ok, I found out what the problem is. I'm not sure if it is just a Samsung problem or an Android ICS problem.
I tried to connect to the antenna as usual by using (to get the Socket):
clientSocket = device.createRfcommSocketToServiceRecord(MY_UUID);
Well it seems that it doesn't work out with my antenna and Tablet setup, so I tried:
clientSocket = device.createInsecureRfcommSocketToServiceRecord(MY_UUID);
This does work. Ther first option forced the system to unpair the antenna and later ask for pairing again.
Problem
i'm writting an app which sends byte codes from a tablet to a µ-controler. Everything worked fine on the Lenovo A1 (Androi 2.3) and Samsung Galaxy Tab 7 Plus N (Android 3.2). Now i'm having issues with the new Samsung Galaxy Tab 2 (Android 4.0). I'm able to pair with the Bluetooth antenna (which is connected to the µ-controller and communicates over the serial protocol). When I start the app I'm asked again to enter the password and to pair. After I enter the pairing password my main layout is visible but a connection isn't established. The LogCat in eclipse tells me: ``` 06-19 16:00:20.656: V/BluetoothSocket.cpp(3189): availableNative 06-19 16:00:20.664: V/BluetoothSocket.cpp(3189): abortNative 06-19 16:00:20.664: V/BluetoothSocket.cpp(3189): ...asocket_abort(49) complete 06-19 16:00:20.664: I/ActivityManager(185): No longer want com.google.android.partnersetup (pid 3220): hidden #16 06-19 16:00:20.671: V/BluetoothSocket.cpp(3189): availableNative 06-19 16:00:20.671: V/BluetoothSocket.cpp(3189): destroyNative 06-19 16:00:20.671: V/BluetoothSocket.cpp(3189): ...asocket_destroy(49) complete 06-19 16:00:20.679: D/KeyguardViewMediator(185): setHidden false 06-19 16:00:20.679: W/System.err(3189): java.io.IOException: socket closed 06-19 16:00:20.679: W/System.err(3189): at android.bluetooth.BluetoothSocket.available(BluetoothSocket.java:370) 06-19 16:00:20.679: W/System.err(3189): at android.bluetooth.BluetoothInputStream.available(BluetoothInputStream.java:40) 06-19 16:00:20.679: W/System.err(3189): at java.io.BufferedInputStream.available(BufferedInputStream.java:114) 06-19 16:00:20.687: W/System.err(3189): at ebs.alphadidact.control.ReceiveThread.run(ReceiveThread.java:79) ``` Further more is the LogCat receiving a thousand times the message: ``` V/BluetoothSocket.cpp(3189): availableNative ``` So as I searched in the web i found a few guys with a similar problem but no solution. Does someone know something about this issue? Maybe it is a compability problem between the antenna and android 4.0. I don't think that the error is in my code because as I said the same code is running on older android versions perfectly.