MainActivity.java

package io.x8.kontaktbeacon;

import android.app.Activity;
import android.os.Bundle;
import android.os.RemoteException;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ListView;
import android.widget.TextView;

import org.altbeacon.beacon.Beacon;
import org.altbeacon.beacon.BeaconConsumer;
import org.altbeacon.beacon.BeaconManager;
import org.altbeacon.beacon.BeaconParser;
import org.altbeacon.beacon.MonitorNotifier;
import org.altbeacon.beacon.RangeNotifier;
import org.altbeacon.beacon.Region;

import java.util.Collection;

public class MainActivity extends Activity implements BeaconConsumer {

    protected static final String TAG = "RangingActivity";
    private BeaconManager beaconManager = BeaconManager.getInstanceForApplication(this);
    private ListView listView;
    private TextView statusView;
    private BeaconCollectionAdapter beaconAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        this.beaconAdapter = new BeaconCollectionAdapter(this);
        this.listView = (ListView) findViewById(R.id.listView);
        this.statusView = (TextView) findViewById(R.id.currentStatus);
        listView.setAdapter(this.beaconAdapter);
        beaconManager.getBeaconParsers().add(new BeaconParser().setBeaconLayout("m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24,d:25-25"));
        beaconManager.bind(this);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        beaconManager.unbind(this);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onBeaconServiceConnect() {
        beaconManager.setMonitorNotifier(new MonitorNotifier() {
            @Override
            public void didEnterRegion(Region region) {
                Log.i(TAG, "I just saw an beacon for the first time!");
            }

            @Override
            public void didExitRegion(Region region) {
                Log.i(TAG, "I no longer see an beacon");
            }

            @Override
            public void didDetermineStateForRegion(int state, Region region) {
                Log.i(TAG, "I have just switched from seeing/not seeing beacons: "+state);
            }
        });

        try {
            beaconManager.startMonitoringBeaconsInRegion(new Region("myMonitoringUniqueId", null, null, null));
        } catch (RemoteException e) {   }

        beaconManager.setRangeNotifier(new RangeNotifier() {
            @Override
            public void didRangeBeaconsInRegion(final Collection<Beacon> rangedBeacons, Region region) {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        statusView.setText("Beacons found: " + rangedBeacons.size());
                        beaconAdapter.replaceWith(rangedBeacons);
                    }
                });
            }
         });

        try {
            beaconManager.startRangingBeaconsInRegion(new Region("myRangingUniqueId", null, null, null));
        } catch (RemoteException e) {   }
    }
}