getting the nearest Beacon

BIDL/BIDL/app/src/main/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="de.uni_oldenburg.bidl">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="de.uni_oldenburg.bidl">
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
 
     <application
+
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"

BIDL/BIDL/app/src/main/java/de/uni_oldenburg/bidl/MainActivity.java

@@ -2,15 +2,62 @@ package de.uni_oldenburg.bidl;
 
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.util.Log;
+import android.widget.TextView;
 
+import com.estimote.sdk.Beacon;
+import com.estimote.sdk.BeaconManager;
+import com.estimote.sdk.Region;
 import com.estimote.sdk.SystemRequirementsChecker;
 
+import java.util.List;
+import java.util.UUID;
+
 public class MainActivity extends AppCompatActivity {
 
+    private static final UUID ESTIMOTE_PROXIMITY_UUID = UUID.fromString("B9407F30-F5F8-466E-AFF9-25556B57FE6D");
+
+    private Region region;
+    private BeaconManager beaconManager;
+    private TextView beaconID;
+
+
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+        beaconID = (TextView) findViewById(R.id.BeaconID);
+
+
+        //Start ranging for beacons
+        beaconManager = new BeaconManager(this);
+        beaconManager.setRangingListener(new BeaconManager.RangingListener() {
+            @Override
+            public void onBeaconsDiscovered(Region region, List<Beacon> list) {
+                if (!list.isEmpty()){
+                    Beacon nearestBeacon = list.get(0);
+                    //// TODO: 29.07.2016 Servercall to get the Event, wich takes place. 
+                    showBeaconID(nearestBeacon);
+                }
+            }
+        });
+
+        region = new Region("ranged region", ESTIMOTE_PROXIMITY_UUID, null, null);
+
+
+
+    }
+
+    /**
+     * Only for Testing. Shows the BeaconIDs in the Textview with the ID = beaconID.
+     * @param nearestBeacon the nearest Beacon for the user
+     */
+    //Todo delete the method
+    private void showBeaconID(Beacon nearestBeacon) {
+        beaconID.setText("UUID: "+nearestBeacon.getProximityUUID()+" \n" +
+                " minor: "+nearestBeacon.getMinor()+" \n" +
+                " major: "+nearestBeacon.getMajor());
     }
 
     @Override
@@ -18,5 +65,24 @@ public class MainActivity extends AppCompatActivity {
         super.onResume();
         // is Bluetooth on, is Location on, etc.
         SystemRequirementsChecker.checkWithDefaultDialogs(this);
+        // Start ranging for beacons, when the activity appears on the screen
+        beaconManager.connect(new BeaconManager.ServiceReadyCallback() {
+            @Override
+            public void onServiceReady() {
+                beaconManager.startRanging(region);
+            }
+        });
+
+
+    }
+
+    /**
+     * Ranging ist stopped, if the Activity disappears.
+     */
+    @Override
+    public void onPause(){
+        beaconManager.stopRanging(region);
+
+        super.onPause();
     }
 }

BIDL/BIDL/app/src/main/res/layout/activity_main.xml

@@ -8,6 +8,7 @@
     tools:context="de.uni_oldenburg.bidl.MainActivity">
 
     <TextView
+        android:id="@+id/BeaconID"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="Hello World!"