java - Connect bluetooth from android to computer(paired devices) -
so, want application connect pc , use android touch pad. iv been doing lot of research on net, didn't find anywhere how connect phone pc. made pair device function , else, need connection method, or @ least how done. here code:
public class mainactivity extends activity { private bluetoothadapter adapter; private intent turnon; private set<bluetoothdevice> paireddevices; private listview lv; private button on,off,paireddevice,discoverable,neardevices; private list<bluetoothdevice> discovereddevices = new arraylist<bluetoothdevice>(); private handler mhandler; private static final uuid my_uuid = uuid.fromstring("04c6093b-0000-1000-8000-00805f9b34fb"); @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); initialize(); buttonfunc(); find(); } @override public boolean oncreateoptionsmenu(menu menu) { // inflate menu; adds items action bar if present. getmenuinflater().inflate(r.menu.menu_main, menu); return true; } @override public boolean onoptionsitemselected(menuitem item) { // handle action bar item clicks here. action bar // automatically handle clicks on home/up button, long // specify parent activity in androidmanifest.xml. int id = item.getitemid(); //noinspection simplifiableifstatement if (id == r.id.action_settings) { return true; } return super.onoptionsitemselected(item); } public void lista(int i){ if(i==0) { final deviceadapter deviceadapter = new deviceadapter(mainactivity.this, discovereddevices); lv.setadapter(deviceadapter); lv.setonitemclicklistener(new adapterview.onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, int position, long id) { pairdevice(deviceadapter.getitem(position)); message.message(mainactivity.this, deviceadapter.getitem(position).getname().tostring()); } }); } else if(i == 1){ list<bluetoothdevice> vecupareni = new arraylist<bluetoothdevice>(); (bluetoothdevice bt:adapter.getbondeddevices()){ vecupareni.add(bt); } final deviceadapter deviceadapter = new deviceadapter(mainactivity.this, vecupareni); lv.setadapter(deviceadapter); lv.setonitemclicklistener(new adapterview.onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, int position, long id) { string adresa = deviceadapter.getitem(position).getaddress(); method connect = getconnectmethod(); bluetoothdevice device = deviceadapter.getitem(position); } }); } } private method getconnectmethod () { try { return bluetootha2dp.class.getdeclaredmethod("connect", bluetoothdevice.class); } catch (nosuchmethodexception ex) { message.message(mainactivity.this , "unable connect"); return null; } } private void pairdevice(bluetoothdevice device) { try { log.d("pairdevice()", "start pairing..."); method m = device.getclass().getmethod("createbond", (class[]) null); m.invoke(device, (object[]) null); log.d("pairdevice()", "pairing finished."); } catch (exception e) { log.e("pairdevice()", e.getmessage()); } } public void buttonfunc(){ on.setonclicklistener(new view.onclicklistener() { @override public void onclick(view v) { turnon = new intent(bluetoothadapter.action_request_enable); startactivityforresult(turnon,0); message.message(mainactivity.this , "bluetooth enabled"); } }); off.setonclicklistener(new view.onclicklistener() { @override public void onclick(view v) { adapter.disable(); } }); paireddevice.setonclicklistener(new view.onclicklistener() { @override public void onclick(view v) { lista(1); } }); discoverable.setonclicklistener(new view.onclicklistener() { @override public void onclick(view v) { intent discoverableintent = new intent(bluetoothadapter.action_request_discoverable); discoverableintent.putextra(bluetoothadapter.extra_discoverable_duration, 1); startactivity(discoverableintent); } }); neardevices.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { lista(0); } }); } public void find(){ intentfilter filter = new intentfilter(); filter.addaction(bluetoothdevice.action_found); filter.addaction(bluetoothadapter.action_discovery_started); filter.addaction(bluetoothadapter.action_discovery_finished); registerreceiver(mreceiver, filter); adapter.startdiscovery(); } private final broadcastreceiver mreceiver = new broadcastreceiver() { public void onreceive(context context, intent intent) { string action = intent.getaction(); if (bluetoothadapter.action_discovery_started.equals(action)) { //discovery starts, can show progress dialog or perform other tasks } else if (bluetoothadapter.action_discovery_finished.equals(action)) { //discovery finishes, dismis progress dialog } else if (bluetoothdevice.action_found.equals(action)) { //bluetooth device found bluetoothdevice device = (bluetoothdevice) intent.getparcelableextra(bluetoothdevice.extra_device); discovereddevices.add(device); message.message(mainactivity.this, "found device " + device.getname()); lista(0); } } }; public void initialize(){ on = (button) findviewbyid(r.id.on); off = (button) findviewbyid(r.id.off); paireddevice = (button) findviewbyid(r.id.paireddevices); neardevices = (button) findviewbyid(r.id.neardevices); discoverable = (button) findviewbyid(r.id.makediscoverable); lv = (listview) findviewbyid(r.id.listauredjaja); adapter = bluetoothadapter.getdefaultadapter(); if(adapter == null){ system.out.close(); } if(adapter.isenabled()){ message.message(mainactivity.this , "enabled"); } else{ message.message(mainactivity.this , "not enabled"); } } }
and here server on pc awaiting connection:
public class mejn { //start server private void startserver() throws ioexception{ //create uuid spp uuid uuid = new uuid("1101", true); //create servicve url string connectionstring = "btspp://localhost:" + uuid +";name=sample spp server"; //open server url streamconnectionnotifier streamconnnotifier = (streamconnectionnotifier)connector.open( connectionstring ); //wait client connection system.out.println("\nserver started. waiting clients connect..."); streamconnection connection=streamconnnotifier.acceptandopen(); remotedevice dev = remotedevice.getremotedevice(connection); system.out.println("remote device address: "+dev.getbluetoothaddress()); system.out.println("remote device name: "+dev.getfriendlyname(true)); //read string spp client inputstream instream=connection.openinputstream(); bufferedreader breader=new bufferedreader(new inputstreamreader(instream)); string lineread=breader.readline(); system.out.println(lineread); //send response spp client outputstream outstream=connection.openoutputstream(); printwriter pwriter=new printwriter(new outputstreamwriter(outstream)); pwriter.write("response string spp server\r\n"); pwriter.flush(); pwriter.close(); streamconnnotifier.close(); } public static void main(string[] args) throws ioexception { //display local device address , name localdevice localdevice = localdevice.getlocaldevice(); system.out.println("address: "+localdevice.getbluetoothaddress()); system.out.println("name: "+localdevice.getfriendlyname()); mejn samplesppserver=new mejn(); samplesppserver.startserver(); } }
so, while looking more, found somewhere , put in code, here code:
public class mainactivity extends activity { private bluetoothadapter adapter; private intent turnon; private set<bluetoothdevice> paireddevices; private listview lv; private button on,off,paireddevice,discoverable,neardevices; private list<bluetoothdevice> discovereddevices = new arraylist<bluetoothdevice>(); private bluetoothsocket btsocket = null; public outputstream outstream; private static final uuid my_uuid = uuid.fromstring("00001101-0000-1000-8000-00805f9b34fb"); private static string address = "c01885bd823c"; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); initialize(); buttonfunc(); find(); } @override public boolean oncreateoptionsmenu(menu menu) { // inflate menu; adds items action bar if present. getmenuinflater().inflate(r.menu.menu_main, menu); return true; } @override public boolean onoptionsitemselected(menuitem item) { // handle action bar item clicks here. action bar // automatically handle clicks on home/up button, long // specify parent activity in androidmanifest.xml. int id = item.getitemid(); //noinspection simplifiableifstatement if (id == r.id.action_settings) { return true; } return super.onoptionsitemselected(item); } public void lista(int i){ if(i==0) { final deviceadapter deviceadapter = new deviceadapter(mainactivity.this, discovereddevices); lv.setadapter(deviceadapter); lv.setonitemclicklistener(new adapterview.onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, int position, long id) { pairdevice(deviceadapter.getitem(position)); message.message(mainactivity.this, deviceadapter.getitem(position).getname().tostring()); } }); } else if(i == 1){ list<bluetoothdevice> vecupareni = new arraylist<bluetoothdevice>(); (bluetoothdevice bt:adapter.getbondeddevices()){ vecupareni.add(bt); } final deviceadapter deviceadapter = new deviceadapter(mainactivity.this, vecupareni); lv.setadapter(deviceadapter); lv.setonitemclicklistener(new adapterview.onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, int position, long id) { bluetoothdevice device = adapter.getremotedevice(deviceadapter.getitem(position).getaddress()); try { btsocket = device.createrfcommsockettoservicerecord(my_uuid); } catch (ioexception e) { message.message(mainactivity.this , "in onresume() , socket create failed: " + e.tostring() + "."); } adapter.canceldiscovery(); try { btsocket.connect(); system.out.print("\n...connection established , data link opened..."); } catch (ioexception e) { try { btsocket.close(); } catch (ioexception e2) { message.message(mainactivity.this , "in onresume() , unable close socket during connection failure" + e2.getmessage().tostring() + "."); } } try { outstream = btsocket.getoutputstream(); } catch (ioexception e) { message.message(mainactivity.this , "in onresume() , output stream creation failed:" + e.getmessage() + "."); } system.out.print("\n...sending message server..."); string message = "hello android.\n"; system.out.print("\n\n...the message send server is: "+message); byte[] msgbuffer = message.getbytes(); try { outstream.write(message.getbytes()); } catch (ioexception e) { string msg = "in onresume() , exception occurred during write: " + e.getmessage(); if (address.equals("00:00:00:00:00:00")) msg = msg + ".\n\nupdate server address 00:00:00:00:00:00 correct address on line 37 in java code"; msg = msg + ".\n\ncheck spp uuid: " + my_uuid.tostring() + " exists on server.\n\n"; message.message(mainactivity.this , msg); } } }); } } private method getconnectmethod () { try { return bluetootha2dp.class.getdeclaredmethod("connect", bluetoothdevice.class); } catch (nosuchmethodexception ex) { message.message(mainactivity.this , "unable connect"); return null; } } private void pairdevice(bluetoothdevice device) { try { log.d("pairdevice()", "start pairing..."); method m = device.getclass().getmethod("createbond", (class[]) null); m.invoke(device, (object[]) null); log.d("pairdevice()", "pairing finished."); } catch (exception e) { log.e("pairdevice()", e.getmessage()); } } public void buttonfunc(){ on.setonclicklistener(new view.onclicklistener() { @override public void onclick(view v) { turnon = new intent(bluetoothadapter.action_request_enable); startactivityforresult(turnon,0); message.message(mainactivity.this , "bluetooth enabled"); } }); off.setonclicklistener(new view.onclicklistener() { @override public void onclick(view v) { adapter.disable(); } }); paireddevice.setonclicklistener(new view.onclicklistener() { @override public void onclick(view v) { lista(1); } }); discoverable.setonclicklistener(new view.onclicklistener() { @override public void onclick(view v) { intent discoverableintent = new intent(bluetoothadapter.action_request_discoverable); discoverableintent.putextra(bluetoothadapter.extra_discoverable_duration, 1); startactivity(discoverableintent); } }); neardevices.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { lista(0); } }); } public void find(){ intentfilter filter = new intentfilter(); filter.addaction(bluetoothdevice.action_found); filter.addaction(bluetoothadapter.action_discovery_started); filter.addaction(bluetoothadapter.action_discovery_finished); registerreceiver(mreceiver, filter); adapter.startdiscovery(); } private final broadcastreceiver mreceiver = new broadcastreceiver() { public void onreceive(context context, intent intent) { string action = intent.getaction(); if (bluetoothadapter.action_discovery_started.equals(action)) { //discovery starts, can show progress dialog or perform other tasks } else if (bluetoothadapter.action_discovery_finished.equals(action)) { //discovery finishes, dismis progress dialog } else if (bluetoothdevice.action_found.equals(action)) { //bluetooth device found bluetoothdevice device = (bluetoothdevice) intent.getparcelableextra(bluetoothdevice.extra_device); discovereddevices.add(device); message.message(mainactivity.this, "found device " + device.getname()); lista(0); } } }; public void initialize(){ on = (button) findviewbyid(r.id.on); off = (button) findviewbyid(r.id.off); paireddevice = (button) findviewbyid(r.id.paireddevices); neardevices = (button) findviewbyid(r.id.neardevices); discoverable = (button) findviewbyid(r.id.makediscoverable); lv = (listview) findviewbyid(r.id.listauredjaja); adapter = bluetoothadapter.getdefaultadapter(); if(adapter == null){ system.out.close(); } if(adapter.isenabled()){ message.message(mainactivity.this , "enabled"); } else{ message.message(mainactivity.this , "not enabled"); } } }
and code server:
/** * class implements spp server accepts single line of * message spp client , sends single line of response client. */ public class mejn {
//start server private void startserver() throws ioexception{ //create uuid spp uuid uuid = new uuid("1101", true); //create servicve url string connectionstring = "btspp://localhost:" + uuid +";name=sample spp server"; //open server url streamconnectionnotifier streamconnnotifier = (streamconnectionnotifier)connector.open( connectionstring ); //wait client connection system.out.println("\nserver started. waiting clients connect..."); streamconnection connection=streamconnnotifier.acceptandopen(); remotedevice dev = remotedevice.getremotedevice(connection); system.out.println("remote device address: "+dev.getbluetoothaddress()); system.out.println("remote device name: "+dev.getfriendlyname(true)); //read string spp client inputstream instream=connection.openinputstream(); bufferedreader breader=new bufferedreader(new inputstreamreader(instream)); string lineread=breader.readline(); system.out.println(lineread); //send response spp client outputstream outstream=connection.openoutputstream(); printwriter pwriter=new printwriter(new outputstreamwriter(outstream)); pwriter.write("response string spp server\r\n"); pwriter.flush(); pwriter.close(); streamconnnotifier.close(); } public static void main(string[] args) throws ioexception { //display local device address , name localdevice localdevice = localdevice.getlocaldevice(); system.out.println("address: "+localdevice.getbluetoothaddress()); system.out.println("name: "+localdevice.getfriendlyname()); mejn samplesppserver=new mejn(); samplesppserver.startserver(); } }
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