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 c121f6b..680755a 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
@@ -48,6 +48,7 @@
 
 import java.io.File;
 import java.io.FileInputStream;
+import java.util.ArrayList;
 
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -77,7 +78,7 @@
     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];
     private int bufSize;
@@ -131,7 +132,7 @@
     @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())
@@ -176,6 +177,19 @@
     public void onLocationChanged(Location location) {
         Log.d("DEBUG", "lat : " + location.getLatitude());
         Log.d("DEBUG", "lon : " + 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