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POAndroid Bluetooth connecting to Device socket.connect() wont connect
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  1. POAndroid Bluetooth connecting to Device socket.connect() wont connect
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    copied!<blockquote> <p>FIXED!!!</p> </blockquote> <p>Didnt work because of the UUID since api15 you can use a get function to get the uuid</p> <pre><code>UID uuid = bluetoothDevice.getUuids()[0].getUuid(); BluetoothSocket socket = bluetoothDevice.createRfcommSocketToServiceRecord(uuid); </code></pre> <blockquote> <p>FIXED!!!</p> </blockquote> <p>I am trying to connect to a devie to write data onto it. I can search for devices and if i click the connect thread gets started, but the "run()" function isnt called. The programm is stucked at</p> <p>Right now i am trying to connect to a bluetooth headset. I dont know if i am pairing the two devices? if i use the normal bluetooth of the phone, i am pairing the two devices with a code like 1 2 3 4 but in my program you dont have to enter a code. Can you help me pls?</p> <blockquote> <p>mmSocket.connect();</p> </blockquote> <p>So my connectedthread() never runs!</p> <p>here is my full code:</p> <p>public class MainActivity extends Activity {</p> <pre><code>private static final int REQUEST_ENABLE_BT = 1; private BluetoothAdapter mBluetoothAdapter = null; private ArrayAdapter&lt;String&gt; mNewDevicesArrayAdapter; ListView newDevicesListView; // Return Intent extra public static String EXTRA_DEVICE_ADDRESS = "device_address"; private ConnectingDevices mConnectingDevices = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); newDevicesListView = (ListView)findViewById(R.id.new_devices); mNewDevicesArrayAdapter=new ArrayAdapter&lt;String&gt;(MainActivity.this, android.R.layout.simple_list_item_1); newDevicesListView.setAdapter(mNewDevicesArrayAdapter); newDevicesListView.setOnItemClickListener(mDeviceClickListener); registerReceiver(mReceiver, new IntentFilter(BluetoothDevice.ACTION_FOUND)); mConnectingDevices = new ConnectingDevices(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } public void onClickbtnEtage1(View view) { mConnectingDevices.write(new byte[2]); } public void onClickbtnActivateBluetooth(View view) { if (mBluetoothAdapter == null) { Toast.makeText(this, "Bluetooth ist nicht verfügbar!", Toast.LENGTH_LONG).show(); finish(); return; } else if (!mBluetoothAdapter.isEnabled()) { Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT); } Toast.makeText(this, "Bluetooth wurde aktiviert!", Toast.LENGTH_LONG).show(); findViewById(R.id.btnSearchDevices).setEnabled(true); } public void onClickbtnSearchDevices(View view) { mBluetoothAdapter.startDiscovery(); Toast.makeText(this, "Bluetooth Geräte werden gesucht!", Toast.LENGTH_LONG).show(); // Find and set up the ListView for newly discovered devices } // Create a BroadcastReceiver for ACTION_FOUND private final BroadcastReceiver mReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); // When discovery finds a device if (BluetoothDevice.ACTION_FOUND.equals(action)) { // Get the BluetoothDevice object from the Intent BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); // If it's already paired, skip it, because it's been listed already if (device.getBondState() != BluetoothDevice.BOND_BONDED) { mNewDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress()); mNewDevicesArrayAdapter.notifyDataSetChanged(); } } } }; // The on-click listener for all devices in the ListViews private OnItemClickListener mDeviceClickListener = new OnItemClickListener() { public void onItemClick(AdapterView&lt;?&gt; av, View v, int arg2, long arg3) { // Cancel discovery because it's costly and we're about to connect mBluetoothAdapter.cancelDiscovery(); // Get the device MAC address, which is the last 17 chars in the View String info = ((TextView) v).getText().toString(); String address = info.substring(info.length() - 17); // Create the result Intent and include the MAC address Intent intent = new Intent(); intent.putExtra(EXTRA_DEVICE_ADDRESS, address); // Set result and finish this Activity // setResult(Activity.RESULT_OK, intent); // finish(); address = intent.getExtras().getString(EXTRA_DEVICE_ADDRESS); // Get the BLuetoothDevice object BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address); // Attempt to connect to the device mConnectingDevices.connect(device); } };} </code></pre> <p>and my connectingdevices class</p> <pre><code> public class ConnectingDevices { boolean bconnectedthread = false; boolean bconnectthread = false; boolean bconnectedthreadstart = false; boolean bconnectthreadstart = false; boolean brun=false; boolean bconnectedsynchronized=false; //00001108-0000-1000-8000-00805F9B34FB private BluetoothAdapter mBluetoothAdapter = null; private static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); private ConnectedThread mConnectedThread; //private final Handler mHandler; private ConnectThread mConnectThread; public void write(byte[] out) { boolean a=bconnectedthread; boolean b=bconnectthread; boolean c=bconnectedthreadstart; boolean d=bconnectthreadstart; boolean e=brun; boolean f=bconnectedsynchronized; // Create temporary object ConnectedThread r; // Synchronize a copy of the ConnectedThread synchronized (this) { r = mConnectedThread; } // Perform the write unsynchronized r.write(out); } private class ConnectThread extends Thread { private final BluetoothSocket mmSocket; private final BluetoothDevice mmDevice; public ConnectThread(BluetoothDevice device) { // Use a temporary object that is later assigned to mmSocket, // because mmSocket is final BluetoothSocket tmp = null; mmDevice = device; bconnectthread = true; // Get a BluetoothSocket to connect with the given BluetoothDevice try { // MY_UUID is the app's UUID string, also used by the server code tmp = device.createRfcommSocketToServiceRecord(MY_UUID); } catch (IOException e) { } mmSocket = tmp; } public void run() { // Cancel discovery because it will slow down the connection mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); mBluetoothAdapter.cancelDiscovery(); brun=true; try { // Connect the device through the socket. This will block // until it succeeds or throws an exception mmSocket.connect(); } catch (IOException connectException) { // Unable to connect; close the socket and get out try { mmSocket.close(); } catch (IOException closeException) { } return; } // Do work to manage the connection (in a separate thread) //bconnectedthreadstart = true; connected(mmSocket); } /** Will cancel an in-progress connection, and close the socket */ public void cancel() { try { mmSocket.close(); } catch (IOException e) { } } } private class ConnectedThread extends Thread { private final BluetoothSocket mmSocket; private final InputStream mmInStream; private final OutputStream mmOutStream; public ConnectedThread(BluetoothSocket socket) { mmSocket = socket; InputStream tmpIn = null; OutputStream tmpOut = null; bconnectedthread=true; // Get the input and output streams, using temp objects because // member streams are final try { tmpIn = socket.getInputStream(); tmpOut = socket.getOutputStream(); } catch (IOException e) { } mmInStream = tmpIn; mmOutStream = tmpOut; } public void run() { byte[] buffer = new byte[1024]; // buffer store for the stream int bytes; // bytes returned from read() // Keep listening to the InputStream until an exception occurs while (true) { try { // Read from the InputStream bytes = mmInStream.read(buffer); // Send the obtained bytes to the UI activity // mHandler.obtainMessage(MESSAGE_READ, bytes, -1, buffer) // .sendToTarget(); } catch (IOException e) { break; } } } /* Call this from the main activity to send data to the remote device */ public void write(byte[] bytes) { try { mmOutStream.write(bytes); } catch (IOException e) { } } /* Call this from the main activity to shutdown the connection */ public void cancel() { try { mmSocket.close(); } catch (IOException e) { } } } public synchronized void connect(BluetoothDevice device) { bconnectthreadstart=true; mConnectThread = new ConnectThread(device); mConnectThread.start(); } public synchronized void connected(BluetoothSocket socket) { bconnectedsynchronized=true; mConnectedThread = new ConnectedThread(socket); mConnectedThread.start(); }} logcat 05-21 17:49:29.902: W/dalvikvm(25720): threadid=1: thread exiting with uncaught exception (group=0x417da498) 05-21 17:49:29.912: E/AndroidRuntime(25720): FATAL EXCEPTION: main 05-21 17:49:29.912: E/AndroidRuntime(25720): java.lang.IllegalStateException: Could not execute method of the activity 05-21 17:49:29.912: E/AndroidRuntime(25720): at android.view.View$1.onClick(View.java:3676) 05-21 17:49:29.912: E/AndroidRuntime(25720): at android.view.View.performClick(View.java:4171) 05-21 17:49:29.912: E/AndroidRuntime(25720): at android.view.View$PerformClick.run(View.java:17070) 05-21 17:49:29.912: E/AndroidRuntime(25720): at android.os.Handler.handleCallback(Handler.java:615) 05-21 17:49:29.912: E/AndroidRuntime(25720): at android.os.Handler.dispatchMessage(Handler.java:92) 05-21 17:49:29.912: E/AndroidRuntime(25720): at android.os.Looper.loop(Looper.java:137) 05-21 17:49:29.912: E/AndroidRuntime(25720): at android.app.ActivityThread.main(ActivityThread.java:4797) 05-21 17:49:29.912: E/AndroidRuntime(25720): at java.lang.reflect.Method.invokeNative(Native Method) 05-21 17:49:29.912: E/AndroidRuntime(25720): at java.lang.reflect.Method.invoke(Method.java:511) 05-21 17:49:29.912: E/AndroidRuntime(25720): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:804) 05-21 17:49:29.912: E/AndroidRuntime(25720): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:571) 05-21 17:49:29.912: E/AndroidRuntime(25720): at dalvik.system.NativeStart.main(Native Method) 05-21 17:49:29.912: E/AndroidRuntime(25720): Caused by: java.lang.reflect.InvocationTargetException 05-21 17:49:29.912: E/AndroidRuntime(25720): at java.lang.reflect.Method.invokeNative(Native Method) 05-21 17:49:29.912: E/AndroidRuntime(25720): at java.lang.reflect.Method.invoke(Method.java:511) 05-21 17:49:29.912: E/AndroidRuntime(25720): at android.view.View$1.onClick(View.java:3671) 05-21 17:49:29.912: E/AndroidRuntime(25720): ... 11 more 05-21 17:49:29.912: E/AndroidRuntime(25720): Caused by: java.lang.NullPointerException 05-21 17:49:29.912: E/AndroidRuntime(25720): at com.example.elevator.ConnectingDevices.write(ConnectingDevices.java:40) 05-21 17:49:29.912: E/AndroidRuntime(25720): at com.example.elevator.MainActivity.onClickbtnEtage1(MainActivity.java:63) 05-21 17:49:29.912: E/AndroidRuntime(25720): ... 14 more 05-21 17:49:49.062: I/System.out(27064): Debugger has connected 05-21 17:49:49.062: I/System.out(27064): waiting for debugger to settle... 05-21 17:49:49.262: I/System.out(27064): waiting for debugger to settle... 05-21 17:49:49.472: I/System.out(27064): waiting for debugger to settle... 05-21 17:49:49.663: I/System.out(27064): waiting for debugger to settle... 05-21 17:49:49.863: I/System.out(27064): waiting for debugger to settle... 05-21 17:49:50.063: I/System.out(27064): waiting for debugger to settle... 05-21 17:49:50.263: I/System.out(27064): waiting for debugger to settle... 05-21 17:49:50.474: I/System.out(27064): debugger has settled (1455) 05-21 17:49:50.684: W/ResourceType(27064): No package identifier when getting value for resource number 0x00000000 05-21 17:49:50.684: W/PackageManager(27064): Failure retrieving resources forcom.example.elevator: Resource ID #0x0 05-21 17:49:50.944: D/IconCustomizer(27064): Generate customized icon for com.example.elevator.png 05-21 17:49:50.984: W/IconCustomizer(27064): can't load transform_config.xml 05-21 17:49:51.164: I/themeservice(27064): add pending job /data/data/com.example.elevator/cache/com.example.elevator.png 05-21 17:49:51.174: I/themeservice(27064): binding service 05-21 17:49:51.344: I/themeservice(27064): service connected 05-21 17:49:51.344: I/themeservice(27064): saving icon for /data/data/com.example.elevator/cache/com.example.elevator.png 05-21 17:49:51.415: I/Adreno200-EGL(27064): &lt;qeglDrvAPI_eglInitialize:294&gt;: EGL 1.4 QUALCOMM build: (CL3068996) 05-21 17:49:51.415: I/Adreno200-EGL(27064): Build Date: 03/07/13 Thu 05-21 17:49:51.415: I/Adreno200-EGL(27064): Local Branch: au37 05-21 17:49:51.415: I/Adreno200-EGL(27064): Remote Branch: 05-21 17:49:51.415: I/Adreno200-EGL(27064): Local Patches: 05-21 17:49:51.415: I/Adreno200-EGL(27064): Reconstruct Branch: 05-21 17:49:52.346: I/themeservice(27064): unbinding service 05-21 17:50:36.903: I/ConnectingDevices(27064): connectthread function started 05-21 17:50:36.903: I/ConnectingDevices(27064): connectthread is working 05-21 17:50:36.913: I/ConnectingDevices(27064): connectthread is running 05-21 17:50:36.953: E/ConnectingDevices(27064): mmSocket unable to connect 05-21 17:50:36.953: E/ConnectingDevices(27064): java.io.IOException: Unable to start Service Discovery 05-21 17:50:36.953: E/ConnectingDevices(27064): at android.bluetooth.BluetoothSocket$SdpHelper.doSdp(BluetoothSocket.java:455) 05-21 17:50:36.953: E/ConnectingDevices(27064): at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:230) 05-21 17:50:36.953: E/ConnectingDevices(27064): at com.example.elevator.ConnectingDevices$ConnectThread.run(ConnectingDevices.java:77) </code></pre>
 

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