diff --git a/app/src/main/java/org/ntlab/amaryllis/client/fragment/MapsFragment.java b/app/src/main/java/org/ntlab/amaryllis/client/fragment/MapsFragment.java
index 6e00703..019bfc1 100644
--- a/app/src/main/java/org/ntlab/amaryllis/client/fragment/MapsFragment.java
+++ b/app/src/main/java/org/ntlab/amaryllis/client/fragment/MapsFragment.java
@@ -30,9 +30,11 @@
 import com.google.android.gms.maps.CameraUpdateFactory;
 import com.google.android.gms.maps.GoogleMap;
 import com.google.android.gms.maps.OnMapReadyCallback;
+import com.google.android.gms.maps.Projection;
 import com.google.android.gms.maps.SupportMapFragment;
 import com.google.android.gms.maps.model.LatLng;
 import com.google.android.gms.maps.model.MarkerOptions;
+import com.google.android.gms.maps.model.VisibleRegion;
 
 import org.ntlab.amaryllis.client.Amaryllis;
 import org.ntlab.amaryllis.client.MainActivity;
@@ -45,6 +47,7 @@
 
 import java.io.File;
 import java.io.FileInputStream;
+import java.util.ArrayList;
 
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -73,7 +76,7 @@
     Button RecordButton;
     Button PlaybackButton;
     private double latitude,longitude;
-//    double latitude,longitude;
+    private double latmax,latmin,longmax,longmin;
 
     private byte[] byteData = new byte[4096];
     //private short[] shortData = new short[2048];
@@ -106,6 +109,17 @@
             googleMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
             googleMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
 
+//            Projection p = googleMap.getProjection();
+//            VisibleRegion vr = p.getVisibleRegion();
+//            double latmax = vr.latLngBounds.northeast.latitude;
+//            double latmin = vr.latLngBounds.southwest.latitude;
+//            double longmax = vr.latLngBounds.northeast.longitude;
+//            double longmin = vr.latLngBounds.southwest.longitude;
+//            System.out.println(latmax + "!!!!!!!!!!!!!");
+//            System.out.println(latmin + "!!!!!!!!!!!!!");
+//            System.out.println(longmax + "!!!!!!!!!!!!!");
+//            System.out.println(longmin + "!!!!!!!!!!!!!");
+
         }
     };
 
@@ -125,7 +139,7 @@
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
-
+        ((MainActivity) getActivity()).subscribe(this);
         Retrofit retrofit = new Retrofit.Builder()
                 .baseUrl("http://nitta-lab-www.is.konan-u.ac.jp/amaryllis/")
                 .addConverterFactory(JacksonConverterFactory.create())
@@ -163,6 +177,18 @@
     public void onLocationChanged(Location location) {
         latitude=location.getLatitude();
         longitude=location.getLongitude();
+        Call<ArrayList<Voicememo>> call = voicememosService.getVoicememos(latmax,latmin,longmax,longmin);
+        call.enqueue(new Callback<ArrayList<Voicememo>>() {
+            @Override
+            public void onResponse(Call<ArrayList<Voicememo>> call, Response<ArrayList<Voicememo>> response) {
+
+            }
+
+            @Override
+            public void onFailure(Call<ArrayList<Voicememo>> call, Throwable t) {
+
+            }
+        });
     }
 
     @Override