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PODefining Passkey for Android Bluetooth Connection
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  1. PODefining Passkey for Android Bluetooth Connection
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    copied!<p>need your help again : </p> <p>I want to establish a connection to a obd2-bluetooth-adapter. For that reason i had a look at the BluetoothChat-Example from the AndroidSDK. I am able to establish a connection to my computer, but i am not able to pair my android tablet with my odb2-bluetooth-adapter (elm327). Found some hints, for instance : </p> <pre><code> myRemoteBluetoothDevice.setPassKey(....); </code></pre> <p>First, i can not use the function on 'myRemoteBluetoothDevice' - and then i don't know where to use this function. Within the connect-Thread ? </p> <pre><code> public synchronized void connect(BluetoothDevice device, boolean secure) { if (D) Log.d(TAG, "connect to: " + device); // Cancel any thread attempting to make a connection if (mState == STATE_CONNECTING) { if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;} } // Cancel any thread currently running a connection if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;} // Start the thread to connect with the given device mConnectThread = new ConnectThread(device, secure); mConnectThread.start(); setState(STATE_CONNECTING); } </code></pre> <p>I think a possible solution would be to implement a event-listener or something like this, which is called when the remote device needs a passcode ? But where i have to implement it ? And where i have to use it ? Can somebody help me out there ? </p> <p>Thanks in advance !!! </p> <p>PS : My App is based on the following example : <a href="https://android.googlesource.com/platform/development/+/25b6aed7b2e01ce7bdc0dfa1a79eaf009ad178fe/samples/BluetoothChat/src/com/example/android/BluetoothChat/BluetoothChatService.java" rel="nofollow">https://android.googlesource.com/platform/development/+/25b6aed7b2e01ce7bdc0dfa1a79eaf009ad178fe/samples/BluetoothChat/src/com/example/android/BluetoothChat/BluetoothChatService.java</a></p> <h2>Greetings.</h2> <h2>EDIT :</h2> <p>Tried to implement the first answer : </p> <p>My BroadcastReceiver : </p> <pre><code> private final BroadcastReceiver mReceiverRequiresPin = new BroadcastReceiver(){ @Override public void onReceive(Context context, Intent intent){ try { BluetoothDevice newDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); Class&lt;?&gt; btDeviceInstance = Class.forName(BluetoothDevice.class.getCanonicalName()); Method convert = btDeviceInstance.getMethod("convertPinToBytes", String.class); byte[] pin = (byte[]) convert.invoke(newDevice, "1234"); Method setPin = btDeviceInstance.getMethod("setPin", byte[].class); boolean success = (Boolean) setPin.invoke(newDevice, pin); } catch (Exception e) { e.printStackTrace(); } } }; </code></pre> <p>And my connect-method, where i register the broadcastReceiver : </p> <pre><code> private void connect(CordovaArgs args, boolean secure, CallbackContext callbackContext) throws JSONException { final String actionPinRequested = "android.bluetooth.device.action.PAIRING_REQUEST"; IntentFilter intentFilterPinRequested = new IntentFilter(actionPinRequested); cordova.getActivity().registerReceiver(mReceiverRequiresPin, intentFilterPinRequested); String macAddress = args.getString(0); BluetoothDevice device = bluetoothAdapter.getRemoteDevice(macAddress); if (device != null) { connectCallback = callbackContext; bluetoothSerialService.connect(device, secure); PluginResult result = new PluginResult( PluginResult.Status.NO_RESULT); result.setKeepCallback(true); callbackContext.sendPluginResult(result); } else { callbackContext.error("Could not connect to " + macAddress); } } </code></pre> <p>Would really appreciate your help ! Thanks in advance. </p> <p>No one has a hint ??</p>
 

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