on every launch of android application, it creates new instances of variables? -

i creating application in want beep on change of preset value accelerometer when toggle switch on.

but problem is, if exit app when toggle switch on, , on next launch beeps twice, , beeps once if toggle switch off.

how can rid of issue?

button1.setonclicklistener(new onclicklistener() {              @override             public void onclick(view arg0) {                 // todo auto-generated method stub                   if(flg1==false)                 {                     stat.settext("status: on");                     flg1=true;                 }                 else                 {                     stat.settext("status : off");                     flg1=false;                 }              }         });     // public void onsensorchanged(sensorevent event) {           deltax = event.values[0];         deltay = event.values[1];         deltaz = event.values[2];  //after changes delta values               if(flg1==true &&(deltax>=thresh||deltay>=thresh||deltay>=thresh))             {                 if(mp1.isplaying())                 {                     //do nothing                 }                 else                 {                     mp1.start();                     toast.maketext(getapplicationcontext(), "playing beep", toast.length_short).show();                 }              }