java - Tunring my android to beacon and detecting -

is right way of doing? using samples https://altbeacon.github.io/android-beacon-library/samples.html

   public class app extends application     implements bootstrapnotifier, beaconconsumer, rangenotifier { private final string tag = "application "; protected static final region beaconregion = new region("2f234454-cf6d-4a0f-adf2-f4911ba9ffa6", null, null, null); protected beaconmanager beaconmanager = null; private regionbootstrap regionbootstrap; private backgroundpowersaver backgroundpowersaver; protected static string slog = ""; @override public void oncreate() {     super.oncreate();     logit(tag, beaconregion.getid1()+"oncreate - in"+beaconregion.getuniqueid());     beaconmanager = org.altbeacon.beacon.beaconmanager.getinstanceforapplication(this);     beaconmanager.getbeaconparsers().clear();     beaconmanager.getbeaconparsers().add(new beaconparser().             setbeaconlayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24"));//ibeacon (tutti)     //--- wake app when beacon seen     regionbootstrap = new regionbootstrap(this, beaconregion);     //--- activate power saver     backgroundpowersaver = new backgroundpowersaver(this);     beaconmanager.bind(this);     logit(tag, "oncreate - out"); } private void logit (string tag, string msg) {     slog += tag + msg + "\n";     log.w(tag, msg); } //-------------------------// //--- bootstrapnotifier ---// //-------------------------// @override public void diddeterminestateforregion(int state, region region) {     string msg = "diddeterminestateforregion ";     switch(state) {         case monitornotifier.inside:             msg +="(inside)";             break;         case monitornotifier.outside:             msg +="(outside)";             break;         default:             msg +="(state=" +state +")";             break;     }     logit(tag, msg); } @override public void didenterregion(region arg0) {     logit(tag, "didenterregion - in");     try {         beaconmanager.startrangingbeaconsinregion(beaconregion);         logit(tag,"der - startrangingbeaconsinregion ok");     } catch (remoteexception e) {         logit(tag, "der - startrangingbeaconsinregion err " +e);     }     logit(tag, "didenterregion - out"); } @override public void didexitregion(region region) {     logit(tag, "didexitregion - in");     try {         beaconmanager.stoprangingbeaconsinregion(beaconregion);         logit(tag,"dxr - stoprangingbeaconsinregion ok");     } catch (remoteexception e) {         logit(tag, "dxr - stoprangingbeaconsinregion err " +e);     }     logit(tag, "didexitregion - out"); } //----------------------// //--- beaconconsumer ---// //----------------------// @override public void onbeaconserviceconnect() {     logit(tag, "onbeaconserviceconnect - in");     beaconmanager.setrangenotifier(this);     logit(tag, "onbeaconserviceconnect - out"); } //---------------------// //--- rangenotifier ---// //---------------------// @override public void didrangebeaconsinregion(collection<beacon> beacons, region region) {     logit(tag, "didrangebeaconsinregion - " +beacons.size() +" beacons");     toast.maketext(getapplicationcontext(), beaconregion.getid1()+" beacon detected "+beacons.size(),             toast.length_short).show();     for(beacon beac: beacons)     {         system.out.println(beac.getid1()+"id 1"+tag);        if(beac.getid1().equals("2f234454-cf6d-4a0f-adf2-f4911ba9ffa6")/send notification     } }  } 

so class, extends application listening beacons around. below, how turning phone beacon.i doing inside activity on click of button. there 2 phones app downloaded on both, once clicks on 1 app button want other phone detect since have implemented in extends application class.

the turn ur android beacon code.

              beacon beacon = new beacon.builder()                         .setid1("2f234454-cf6d-4a0f-adf2-f4911ba9ffa6") // uuid beacon                         .setid2("1") // major beacon                         .setid3("5") // minor beacon                         .setmanufacturer(0x004c) // radius networks.0x0118  change other beacon layouts//0x004c iphone                         .settxpower(-56) // power in db                         .setdatafields(arrays.aslist(new long[]{0l})) // remove beacon layouts without d: fields                         .build();                 beaconparser beaconparser = new beaconparser()                         .setbeaconlayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24");                 beacontransmitter = new beacontransmitter(menuactivity.this, beaconparser);                 beacontransmitter.startadvertising(beacon, new advertisecallback() {                     @override                     public void onstartfailure(int errorcode) {                         log.e("tag", "advertisement start failed code: " + errorcode);                     }                     @override                     public void onstartsuccess(advertisesettings settingsineffect) {                         log.i("tag", "advertisement start succeeded.");                         toast.maketext(menuactivity.this, "advertisement start succeeded",                                 toast.length_short).show();                         system.out.println("startedddddddddddd");                     }                 });                 //   beacontransmitter.stopadvertising();             }             catch(exception o)             {                 system.out.println("affda "+o.getmessage());             } 

i havig issue, didenterregion , didrangebeaconsinregion fired many times, sending many notification user multiple times. not user friendly.

the didrangebeaconsinregion callback supposed called many times -- that's how ranging works. called approximately once per second when beacon detected tell there , give distance estimate.

if want fire notification once first time call method, can set flag specific beacon.

here example of code might use that:

// add top of class private hashmap<string,boolean> malreadysentnotification = new hashmap<string,boolean>();  ...  // add inside of didrangebeaconsinregion method if (malreadysentnotification.get(beacon.tostring())) {   malreadysentnotification.put(beacon.tostring(), true);   // send notification here. }