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copied!<p>If I remember correctly the HTC phones had or [have] an issue at a certain API level (maybe 2.1 and below?). The resolution is reflection. </p> <p><strong>Reference</strong></p> <p><a href="https://stackoverflow.com/questions/3031796/disconnect-a-bluetooth-socket-in-android">Disconnect a bluetooth socket in Android</a></p> <p><a href="https://stackoverflow.com/questions/3397071/android-bluetooth-service-discovery-failed-exception">Service discovery failed exception using Bluetooth on Android </a></p> <p><strong>Solution</strong></p> <p>Instead of using</p> <pre><code>tmp = device.createRfcommSocketToServiceRecord(MY_UUID); </code></pre> <p>use</p> <pre><code>Method m = device.getClass().getMethod("createRfcommSocket", new Class[] {int.class}); tmp = (BluetoothSocket) m.invoke(device, 1); </code></pre> <p>to get your BluetoothSocket on certain HTC phones using a certain API level.</p> <p><strong>Solution Expanded</strong></p> <p>I recently had an application where I had to account for this, and I did not like using this on non-HTC phones, so I had a conditional to check for HTC, if true then use reflection, otherwise dont.</p> <pre><code>public BTConnectThread(BluetoothDevice device) { mmDevice = device; BluetoothSocket tmp = null; // Get a BluetoothSocket for a connection with the given BluetoothDevice if (isAnHTCDevice()) { try { Method m = device.getClass().getMethod("createRfcommSocket", new Class[] {int.class}); tmp = (BluetoothSocket) m.invoke(device, Integer.valueOf(1)); } catch (Exception e) { Log.e(BCTAG, "Error at HTC/createRfcommSocket: " + e); e.printStackTrace(); handler.sendMessage(handler.obtainMessage(MSG_BT_LOG_MESSAGE, "Exception creating htc socket: " + e)); } } else { try { UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); tmp = device.createRfcommSocketToServiceRecord(MY_UUID); } catch (Exception e) { Log.e(BCTAG, "Error at createRfcommSocketToServiceRecord: " + e); e.printStackTrace(); handler.sendMessage(handler.obtainMessage(MSG_BT_LOG_MESSAGE, "Exception creating socket: " + e)); } } mmSocket = tmp; } </code></pre> <p>isAnHTCDevice():</p> <pre><code>public boolean isAnHTCDevice() { String manufacturer = android.os.Build.MANUFACTURER; if (manufacturer.toLowerCase().contains("htc")) return true; else return false; } </code></pre>

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