diff --git a/app/src/main/java/com/example/nemophila/TestActivity.java b/app/src/main/java/com/example/nemophila/TestActivity.java
index c2571c8..3b2af0b 100644
--- a/app/src/main/java/com/example/nemophila/TestActivity.java
+++ b/app/src/main/java/com/example/nemophila/TestActivity.java
@@ -24,6 +24,8 @@
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_test);
 
+        Nemophila nemophila = (Nemophila) this.getApplication();
+
         //テスト用ViewModel（ViewModelが増えた場合はここで準備。spinnerItemに名前も追加すること）
         //RoomViewModelへのアクセス
         ShopsViewModel shopsViewModel = new ViewModelProvider(this).get(ShopsViewModel.class);
@@ -55,7 +57,8 @@
                 switch (position){
                     //ここにテストしたい処理を追加する（ 0はShopsViewModel、1はAccountViewModel、2はPostsViewModel）
                     case 0:
-                        shopsViewModel.setViewArea(20.0, 40.0, 10.0, 30.0);
+                        // shopsViewModel.setViewArea(20.0, 40.0, 10.0, 30.0);
+                        shopsViewModel.start(500, nemophila);
                         break;
                     case 1:
                         //accountViewModel.getAccount("1111");
diff --git a/app/src/main/java/com/example/nemophila/viewmodels/ShopsViewModel.java b/app/src/main/java/com/example/nemophila/viewmodels/ShopsViewModel.java
index addd584..4f0d8d3 100644
--- a/app/src/main/java/com/example/nemophila/viewmodels/ShopsViewModel.java
+++ b/app/src/main/java/com/example/nemophila/viewmodels/ShopsViewModel.java
@@ -15,10 +15,14 @@
 import retrofit2.Retrofit;
 import retrofit2.converter.jackson.JacksonConverterFactory;
 
-public class ShopsViewModel extends ViewModel {
+public class ShopsViewModel extends TimerViewModel {
     // フィールド
     final private ShopsRest shopsRest;
     final private Retrofit retrofit;
+    private double ux;
+    private double uy;
+    private double lx;
+    private double ly;
 
     // ライブデータ
     final private MutableLiveData<Collection<Shop>> shopsLiveData;
@@ -33,12 +37,27 @@
         this.shopsRest = retrofit.create(ShopsRest.class);
     }
 
-    public LiveData<Collection<Shop>> getMembersLiveData() {
+    public LiveData<Collection<Shop>> getShopsLiveData() {
         return this.shopsLiveData;
     }
 
+    @Override
+    public void update() {
+        updateShops();
+        // System.out.println("hogehoge");
+    }
+
     // 画面を動かす, 又はGPSが移動する度に呼び出される
     public void setViewArea(double ux, double uy, double lx, double ly) {
+        this.ux = ux;
+        this.uy = uy;
+        this.lx = lx;
+        this.ly = ly;
+
+        updateShops();
+    }
+
+    public void updateShops() {
         // 画面内に収まる範囲の店舗を取得する
         Call<Collection<Shop>> call = shopsRest.getShops(ux, uy, lx, ly);
 
diff --git a/app/src/main/java/com/example/nemophila/viewmodels/TimerViewModel.java b/app/src/main/java/com/example/nemophila/viewmodels/TimerViewModel.java
new file mode 100644
index 0000000..3ec5dd4
--- /dev/null
+++ b/app/src/main/java/com/example/nemophila/viewmodels/TimerViewModel.java
@@ -0,0 +1,38 @@
+package com.example.nemophila.viewmodels;
+
+import com.example.nemophila.Nemophila;
+
+import java.util.concurrent.ScheduledThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+
+import androidx.lifecycle.ViewModel;
+
+abstract class TimerViewModel extends ViewModel implements  Runnable {
+    private ScheduledThreadPoolExecutor thread = null;
+    protected Nemophila nemophila;
+
+
+    //-----------------------------------------------------------------
+    // 一定間隔で呼び出す
+    @Override
+    public void run() {
+        update();
+    }
+
+    public abstract void update();
+
+    //-----------------------------------------------------------------
+    //何ミリ秒ごとにrun()を実行するかを決める
+    public void start(int interval, Nemophila nemophila) {
+        this.nemophila = nemophila;
+        thread = new ScheduledThreadPoolExecutor(1);
+        thread.scheduleWithFixedDelay(this, interval, 1000L, TimeUnit.MILLISECONDS);
+    }
+
+    //-----------------------------------------------------------------
+    //
+    public void stop() {
+        thread.shutdown();
+    }
+    //-----------------------------------------------------------------
+}