java - Activate proximity sensor on button click -

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i trying register proximity sensor listener when button clicked. nothing seems happen. ahve tried exploring internet of sort not anything. doing wrong? please help!

the xml file:

 <?xml version="1.0" encoding="utf-8"?>     <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"         android:id="@+id/relativelayout1"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:background="@drawable/pushupbg"         android:orientation="vertical" >           <textview             android:id="@+id/tvtitlepu"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_alignparenttop="true"             android:layout_centerhorizontal="true"             android:text="push counter"             android:textcolor="#98f5ff"             android:textsize="25sp"             android:padding="10sp"             android:textappearance="?android:attr/textappearancelarge" />          <linearlayout             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_above="@+id/fragment1"             android:layout_centerhorizontal="true"             android:layout_marginbottom="20dp"             android:orientation="horizontal" >              <button                 android:id="@+id/bstart"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:padding="10dp"                 android:typeface="serif"                 android:onclick="startcounter"                 android:text="start" />              <button                 android:id="@+id/bstop"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:padding="10dp"                 android:typeface="serif"                 android:onclick="stopcounter"                 android:text="stop" />             <button                 android:id="@+id/bsave"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:padding="10dp"                 android:typeface="serif"                 android:onclick="savedata"                 android:text="save" />           </linearlayout>          <textview             android:id="@+id/tvcount"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_below="@+id/tvtitlepu"             android:layout_centerhorizontal="true"             android:layout_margintop="22dp"             android:text=""             android:textcolor="#ffffff"             android:textappearance="?android:attr/textappearancelarge" />      </relativelayout>

and here java file:

public class pushup_counter extends activity implements sensoreventlistener {     sensormanager smgr;     sensor sensor;     button start,stop,save;     textview title,count;     int counter=0; @override protected void oncreate(bundle savedinstancestate) {     // todo auto-generated method stub     super.oncreate(savedinstancestate);     setcontentview(r.layout.pushup_layout);     start=(button)findviewbyid(r.id.bstart);     stop=(button)findviewbyid(r.id.bstop);     save=(button)findviewbyid(r.id.bsave);     title=(textview)findviewbyid(r.id.tvtitlepu);     count=(textview)findviewbyid(r.id.tvcount);     stop.setenabled(false);     save.setenabled(false);  }   public void startcounter(view v) {     // todo auto-generated method stub     smgr=(sensormanager)getsystemservice(sensor_service);     sensor=smgr.getdefaultsensor(sensor.type_proximity);     smgr.registerlistener(this, sensor,sensormanager.sensor_delay_normal);       stop.setenabled(true); }  public void stopcounter(view v) {     // todo auto-generated method stub     smgr.unregisterlistener(this);     save.setenabled(true); }  public void savedata(view v) {     // todo auto-generated method stub  }  @override public void onaccuracychanged(sensor arg0, int arg1) {     // todo auto-generated method stub  }  @override public void onsensorchanged(sensorevent arg0) {     // todo auto-generated method stub     if (arg0.values[0] == 0){         counter++;         count.settext("your count is: "+counter);     } } }

logcat:

06-19 00:01:21.780: w/egl_genymotion(1493): eglsurfaceattrib not implemented  06-19 00:01:29.396: i/activitymanager(401): start u0 {cmp=com.example.fitgo/.pushup_counter} pid 1493  06-19 00:01:29.412: w/genymotion_audio(125): out_write() limiting sleep time 44149 23219  06-19 00:01:29.452: w/genymotion_audio(125): out_write() limiting sleep time 55759 23219  06-19 00:01:29.472: w/genymotion_audio(125): out_write() limiting sleep time 67369 23219  06-19 00:01:29.504: w/genymotion_audio(125): out_write() limiting sleep time 58979 23219  06-19 00:01:29.524: w/genymotion_audio(125): out_write() limiting sleep time 40589 23219  06-19 00:01:29.548: w/genymotion_audio(125): out_write() limiting sleep time 32199 23219  06-19 00:01:29.572: w/genymotion_audio(125): out_write() limiting sleep time 23809 23219  06-19 00:01:29.856: d/dalvikvm(401): gc_for_alloc freed 441k, 17% free 13865k/16596k, paused 25ms, total 25ms  06-19 00:01:29.884: d/dalvikvm(401): gc_for_alloc freed 748k, 19% free 13487k/16596k, paused 22ms, total 22ms  06-19 00:01:29.884: d/mobiledatastatetracker(401): default: setpolicydataenable(enabled=true)  06-19 00:01:30.152: w/egl_genymotion(1493): eglsurfaceattrib not implemented  06-19 00:01:30.360: i/activitymanager(401): displayed com.example.fitgo/.pushup_counter: +458ms  06-19 00:01:34.372: w/genymotion_audio(125): out_write() limiting sleep time 44149 23219  06-19 00:01:34.396: w/genymotion_audio(125): out_write() limiting sleep time 55759 23219  06-19 00:01:34.424: w/genymotion_audio(125): out_write() limiting sleep time 47369 23219  06-19 00:01:34.448: w/genymotion_audio(125): out_write() limiting sleep time 38979 23219  06-19 00:01:34.492: w/genymotion_audio(125): out_write() limiting sleep time 31178 23219  06-19 00:01:38.448: w/genymotion_audio(125): out_write() limiting sleep time 44149 23219  06-19 00:01:38.468: w/genymotion_audio(125): out_write() limiting sleep time 55759 23219  06-19 00:01:38.496: w/genymotion_audio(125): out_write() limiting sleep time 47369 23219  06-19 00:01:38.516: w/genymotion_audio(125): out_write() limiting sleep time 38979 23219  06-19 00:01:38.564: w/genymotion_audio(125): out_write() limiting sleep time 31178 23219

add onclicklistener start.setonclicklistener(startcounter)

or can way 

bstart.setonclicklistener(new view.onclicklistener() { @override    public void onclick(view v) {     startcounter(v);    } });

edit

let's make change on code see if it's code or not.

first of delete line of code :

android:onclick="startcounter"

then on pushup_counter class change header :

public class pushup_counter extends activity implements sensoreventlistener, onclicklistener  {

you have add on oncreate() line of code : 

start.setonclicklistener(this);

then have add method onclick() looks : 

@override public void onclick(view v) {      // getid() returns view's identifier.     switch(v.getid()){             case r.id.bstart;               // todo auto-generated method stub               smgr=(sensormanager)getsystemservice(sensor_service);               sensor=smgr.getdefaultsensor(sensor.type_proximity);               smgr.registerlistener(this, sensor,sensormanager.sensor_delay_normal);                 stop.setenabled(true);            break;     } }

comment rest of code if gives error, try button , let me know if works.


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