added comments

project/app/src/main/java/com/example/hannes/chatonymous/MapsActivity.java

@@ -37,6 +37,7 @@ protected void onCreate(Bundle savedInstanceState) {
                 .findFragmentById(R.id.map);
         mapFragment.getMapAsync(this);
 
+        //read the intent extra (user position) and add marker.
         double[] userPos = getIntent().getDoubleArrayExtra("LOCATION");
         Log.d("USER LAT: ", Double.toString(userPos[0]));
         Log.d("USER LON:", Double.toString(userPos[1]));
@@ -56,6 +57,10 @@ protected void onCreate(Bundle savedInstanceState) {
      * If Google Play services is not installed on the device, the user will be prompted to install
      * it inside the SupportMapFragment. This method will only be triggered once the user has
      * installed Google Play services and returned to the app.
+     *
+     *
+     * Add a marker where the users is located.
+     * And add a listner for clicks on map. Upon clicking add a marker and ask save and exit
      */
     @Override
     public void onMapReady(GoogleMap googleMap) {
@@ -72,6 +77,7 @@ public void onMapClick(LatLng point) {
                     List<Address> addresses = geo.getFromLocation(point.latitude, point.longitude, 1);
 
                     if (addresses.size() > 0) {
+                        //TODO: Set the markerText based on region text.
                         String region = addresses.get(0).getLocality();
                         String country = addresses.get(0).getCountryName();
                         Log.d("REGION",region);
@@ -89,14 +95,17 @@ public void onMapClick(LatLng point) {
 
                     }
                 } catch(Exception e) {
-                    //Toast.makeText(this, "No Location Name Found", 600).show();
                 }
 
             }
         });
 
     }
 
+    /*
+        creates a popup window for save and exit
+        Upon save send marker as intent extra to main.
+     */
     public void comfirm() {
         new AlertDialog.Builder(this)
                 .setTitle("Location Chosen:")

project/app/src/main/java/com/example/hannes/chatonymous/SettingsActivity.java

@@ -20,15 +20,18 @@ public class SettingsActivity extends AppCompatActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_settings);
+
+        //Add toolbar and its functions.
         Toolbar myToolbar = (Toolbar) findViewById(R.id.my_toolbar);
         setSupportActionBar(myToolbar);
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
         getSupportActionBar().setDisplayShowHomeEnabled(true);
 
-
+        //get the sharedpreference (user range)
         sharedpreferences = getSharedPreferences("chatonymousSettings", Context.MODE_PRIVATE);
         rangeValue = sharedpreferences.getInt("userRange", 10);
 
+        //read and write seekbar value to userrange upon update.
         SeekBar seekBar = (SeekBar)findViewById(R.id.range_seekBar);
         seekBar.setProgress(rangeValue);
         final TextView seekBarValue = (TextView)findViewById(R.id.seekbarvalue);
@@ -55,6 +58,7 @@ public void onStopTrackingTouch(SeekBar seekBar) {
         });
     }
 
+    //save and exit. Saving to sharedpref.
     protected void saveAndExit(View view) {
         SharedPreferences.Editor editor = sharedpreferences.edit();
         editor.putInt("userRange", rangeValue);