Android Bluetooth Socket not created -

-

my app trying connect bluetooth module , send/receive data simultaneously. following error thrown (it happens after gc call):-

12-15 19:06:15.559: d/dalvikvm(22875): gc_for_alloc freed 3925k, 25% free 11400k/15096k, paused 28ms, total 28ms     12-15 19:06:15.559: e/system(22875): uncaught exception thrown finalizer  12-15 19:06:15.559: e/system(22875): java.io.ioexception: socket not created     12-15 19:06:15.559: e/system(22875):    @ android.net.localsocketimpl.shutdowninput(localsocketimpl.java:392) 12-15 19:06:15.559: e/system(22875):    @ android.net.localsocket.shutdowninput(localsocket.java:206) 12-15 19:06:15.559: e/system(22875):    @ android.bluetooth.bluetoothsocket.close(bluetoothsocket.java:462) 12-15 19:06:15.559: e/system(22875):    @ android.bluetooth.bluetoothsocket.finalize(bluetoothsocket.java:229) 12-15 19:06:15.559: e/system(22875):    @ java.lang.daemons$finalizerdaemon.dofinalize(daemons.java:187) 12-15 19:06:15.559: e/system(22875):    @ java.lang.daemons$finalizerdaemon.run(daemons.java:170) 12-15 19:06:15.559: e/system(22875):    @ java.lang.thread.run(thread.java:841)

this uncaught exception thrown repeatedly few number of times , result app stop responding.

what can possible reasons error? trying solve can't find exact issue. please help.

i attaching code using connect bluetooth module. using asynctask this..

    //global variable     bluetoothsocket mbsocket;      // inside doinbackground() function     mbluetoothadapter = bluetoothadapter.getdefaultadapter();     if (mbluetoothadapter.isenabled()) {         try {             (bluetoothdevice bt : mbluetoothadapter.getbondeddevices()) {                 if (bt.getname().equalsignorecase("my_device_bt_name")) {                     bluetoothdevice device = mbluetoothadapter                             .getremotedevice(bt.getaddress());                     mbluetoothadapter.canceldiscovery(); // have named our                                                             // device                                                             // cancel search                     mbsocket = device                             .createrfcommsockettoservicerecord(spp_uuid);                     if(!mbsocket.isconnected()) {                         mbsocket.connect();                     }                     return mbsocket;                 }             }             return null;         } catch (ioexception e) {             e.printstacktrace();             return null;         }      } else         return null;

i have modified code connect bluetooth module, handled exceptions properly, since there isn't such error facing have described in question.

//global variable bluetoothsocket mbsocket;  // inside doinbackground() function mbluetoothadapter = bluetoothadapter.getdefaultadapter(); if(mbluetoothadapter.isenabled()) {     try {         for(bluetoothdevice bt: mbluetoothadapter.getbondeddevices()) {             if(bt.getname().equalsignorecase(params[0])) {                 bluetoothdevice device = mbluetoothadapter.getremotedevice(bt.getaddress());                 mbluetoothadapter.canceldiscovery();                  mbsocket = device.createrfcommsockettoservicerecord(spp_uuid);                 mbsocket.connect();                 return mbsocket;             }         }     } catch(ioexception e) {         if(mbsocket != null) {             try {                 mbsocket.close();             } catch (ioexception e1) {                 e1.printstacktrace();             }             mbsocket = null;         }         e.printstacktrace();         return null;     } }  return null;

Comments

Post a Comment

Popular posts from this blog

java - Plugin org.apache.maven.plugins:maven-install-plugin:2.4 or one of its dependencies could not be resolved -

-
i getting error message , further 1 here: failed read artifact descriptor org.apache.maven.plugins:maven-install-plugin:jar:2.4: even though when go .m2 repository path c:\users\a591024.m2\repository\org\apache\maven\plugins\maven-resources-plugin\2.4 the maven-resources-plugin-2.4.jar file there , maven-resources-plugin-2.4.pom there. have tried delete .m2 repository no luck. far maven not build project desperately need to. any ideas? it seems proxy issue please aad following in setting.xml grabbing lan setting , proxy information. <proxies> <proxy> <id>proxy</id> <active>true</active> <protocol>http</protocol> <host>hostname</host> <port>port</port> </proxy> </proxies> this frequent issue, please see below link well. plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or 1 of dependencies not resolved maven: failed ret...
Read more

Round ImageView Android -

-
Image
i working on android application in doing rounded image view. working fine images, images 160x120 resolution shows oval shaped. code custom imageview given below, please me out here: public class roundimage extends drawable { private final bitmap mbitmap; private final paint mpaint; private final rectf mrectf; private final int mbitmapwidth; private final int mbitmapheight; public roundimage(bitmap bitmap) { mbitmap = bitmap; mrectf = new rectf(); mpaint = new paint(); mpaint.setantialias(true); mpaint.setdither(true); final bitmapshader shader = new bitmapshader(bitmap, shader.tilemode.clamp, shader.tilemode.clamp); mpaint.setshader(shader); mbitmapwidth = mbitmap.getwidth(); mbitmapheight = mbitmap.getheight(); } @override public void draw(canvas canvas) { canvas.drawoval(mrectf, mpaint); } @override protected void onboundschange(rect bound...
Read more

How can I utilize Yahoo Weather API in android -

-
Image
i want develop app using yahoo weather api android. want current , forecast weather details. i have tried different sources (e.g.: https://github.com/survivingwithandroid/weatherlib , getting error weatherlib api android , unable execute activity in android weatherlib ) , getting different errors m unable resplve. there can proper tutorial or guide! error: -17 08:50:48.961 3168-3168/com.survivingwithandroid.weather e/androidruntime﹕ fatal exception: main process: com.survivingwithandroid.weather, pid: 3168 java.lang.runtimeexception: unable start activity componentinfo{com.survivingwithandroid.weather/com.survivingwithandroid.weather.mainactivity}: java.lang.nullpointerexception: attempt invoke interface method 'boolean java.util.list.isempty()' on null object reference @ android.app.activitythread.performlaunchactivity(activitythread.java:2298) @ android.app.activitythread.handlelaunchactivity(activitythread.java:2360) @ android.app.activi...
Read more