diff --git a/app/src/main/java/com/example/cosmosclient/app/Cosmos.java b/app/src/main/java/com/example/cosmosclient/app/Cosmos.java
index 632820b..744c6d9 100644
--- a/app/src/main/java/com/example/cosmosclient/app/Cosmos.java
+++ b/app/src/main/java/com/example/cosmosclient/app/Cosmos.java
@@ -4,9 +4,12 @@
 
 import com.example.cosmosclient.entities.Group;
 
+import java.util.HashMap;
+
 public class Cosmos extends Application {
     private String token=null;
     private Group curGroup=null;
+    private HashMap<String, Group> groups = new HashMap<>();
     private String uId=null;
 
     //token処理
@@ -18,6 +21,7 @@
     }
 
     //Group処理
+    //再考
     public void setCurrentGroup(Group g){
         curGroup = g;
     }
@@ -25,6 +29,17 @@
         return curGroup;
     }
 
+    //再考
+    public void setGroup(Group g) {
+        if(groups.get(g.getgId()) == null) {
+            String newGid = g.getgId();
+            groups.put(newGid, g);
+        }
+    }
+    public Group getGroup(String gId) {
+        return groups.get(gId);
+    }
+
     //uId処理
     public void setuId(String uId){
         this.uId = uId;
diff --git a/app/src/main/java/com/example/cosmosclient/entities/Group.java b/app/src/main/java/com/example/cosmosclient/entities/Group.java
index 9e728a3..1ee3c6d 100644
--- a/app/src/main/java/com/example/cosmosclient/entities/Group.java
+++ b/app/src/main/java/com/example/cosmosclient/entities/Group.java
@@ -1,5 +1,7 @@
 package com.example.cosmosclient.entities;
 
+import com.example.cosmosclient.entities.jsons.GroupJson;
+
 import java.util.ArrayList;
 import java.util.Set;
 
@@ -9,8 +11,7 @@
     /*   Userどうするか
     private ArrayList<User> members;
     */
-    //private ArrayList<Request> requests;
-    private Set<Request> requests;
+    private RequestList requestList;
 
     public Group(){
 
@@ -22,11 +23,17 @@
         setName(name);
     }
 
+    public Group(GroupJson groupJson){
+        setgId(groupJson.getgId());
+        setUri(groupJson.getUri());
+        setName(groupJson.getName());
+    }
+
     public String getgId() {
         return gId;
     }
 
-    private void setgId(String gId) {
+    public void setgId(String gId) {
         this.gId = gId;
     }
 
@@ -54,21 +61,12 @@
         return name;
     }
 
-    public Set<Request> getRequests(){
-        return requests;
+    public RequestList getRequestList(){
+        return requestList;
     }
 
-    public void setRequests(Set<Request> requests){
-        this.requests = requests;
-    }
-
-    public void addRequests(Request request){
-        requests.add(request);
-    }
-
-    public ArrayList<Request> getRequestsList(){
-        ArrayList<Request> list = new ArrayList<Request>(getRequests());
-        return list;
+    public void setRequestList(RequestList requestList){
+        this.requestList = requestList;
     }
 
     /*メンバー*/
@@ -85,7 +83,4 @@
     //    members.remove(members.indexOf(uid));
     //    return null;
     //}
-
-    /*リクエスト*/
-
 }
diff --git a/app/src/main/java/com/example/cosmosclient/entities/RequestList.java b/app/src/main/java/com/example/cosmosclient/entities/RequestList.java
new file mode 100644
index 0000000..3a50ea0
--- /dev/null
+++ b/app/src/main/java/com/example/cosmosclient/entities/RequestList.java
@@ -0,0 +1,49 @@
+package com.example.cosmosclient.entities;
+
+import java.util.List;
+
+public class RequestList {
+    private List<Request> requests;
+
+    public RequestList() {
+
+    }
+
+    public RequestList(List<Request> requests) {
+        this.requests = requests;
+    }
+
+    public List<Request> getRequests() {
+        return requests;
+    }
+
+    public void setRequests(List<Request> requests) {
+        this.requests = requests;
+    }
+
+    public void addRequests(Request r) {
+        requests.add(r);
+    }
+
+    public Request getRequest(int index) {
+        return requests.get(index);
+    }
+
+    public void clearRequest() {
+        requests.clear();
+    }
+
+    public void removeRequest(int index) {
+        requests.remove(index);
+    }
+
+    public int getRequestCount() {
+        return requests.size();
+    }
+
+//    @Override
+//    public boolean equals(Object other) {
+//        if (!(other instanceof Container)) return false;
+//        return components.equals(((Container)other).components);
+//    }
+}
diff --git a/app/src/main/java/com/example/cosmosclient/entities/Requests.java b/app/src/main/java/com/example/cosmosclient/entities/Requests.java
deleted file mode 100644
index df14a88..0000000
--- a/app/src/main/java/com/example/cosmosclient/entities/Requests.java
+++ /dev/null
@@ -1,52 +0,0 @@
-package com.example.cosmosclient.entities;
-
-import com.fasterxml.jackson.annotation.JsonIgnore;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class Requests {
-    private List<Request> requests;
-
-    public Requests() {
-
-    }
-
-    public Requests(List<Request> requests) {
-        this.requests = requests;
-    }
-
-    public List<Request> getRequests() {
-        return requests;
-    }
-
-    public void setRequests(List<Request> requests) {
-        this.requests = requests;
-    }
-
-    public void addRequests(Request r) {
-        requests.add(r);
-    }
-
-    public Request getRequest(int index) {
-        return requests.get(index);
-    }
-
-    public void clearRequest() {
-        requests.clear();
-    }
-
-    public void removeRequest(int index) {
-        requests.remove(index);
-    }
-
-    public int getRequestCount() {
-        return requests.size();
-    }
-
-//    @Override
-//    public boolean equals(Object other) {
-//        if (!(other instanceof Container)) return false;
-//        return components.equals(((Container)other).components);
-//    }
-}
diff --git a/app/src/main/java/com/example/cosmosclient/resources/GroupsRest.java b/app/src/main/java/com/example/cosmosclient/resources/GroupsRest.java
index 1e62250..a424816 100644
--- a/app/src/main/java/com/example/cosmosclient/resources/GroupsRest.java
+++ b/app/src/main/java/com/example/cosmosclient/resources/GroupsRest.java
@@ -1,16 +1,10 @@
 package com.example.cosmosclient.resources;
 
-import com.example.cosmosclient.entities.AddRequestsResponse;
-import com.example.cosmosclient.entities.CreateGroupResponse;
-import com.example.cosmosclient.entities.Group;
 import com.example.cosmosclient.entities.GroupListResponse;
+import com.example.cosmosclient.entities.CreateGroupResponse;
+import com.example.cosmosclient.entities.AddRequestsResponse;
 import com.example.cosmosclient.entities.MemberListResponse;
-import com.example.cosmosclient.entities.Request;
-import com.example.cosmosclient.entities.Requests;
-import com.example.cosmosclient.entities.User;
-
-import java.util.ArrayList;
-import java.util.Date;
+import com.example.cosmosclient.entities.RequestList;
 
 import retrofit2.Call;
 import retrofit2.http.Field;
@@ -35,14 +29,14 @@
     Call<AddRequestsResponse> addRequests(@Path("gId") String gId, @Field("uId") String uId, @Field("product") String product, @Field("deadline") String deadline, @Field("location") int location, @Field("token") String token);
 
     @GET("groups/{gId}/requests")
-    Call<Requests> getRequestsListByGid(@Path("gId") String gId, @Query("token") String token, @Query("detail") boolean detail, @Query("quantity") int quantity);
+    Call<RequestList> getRequestsListByGid(@Path("gId") String gId, @Query("token") String token, @Query("detail") boolean detail, @Query("quantity") int quantity);
 
     @PUT("groups/{gId}/requests/{rId}")
     @FormUrlEncoded
     Call<AddRequestsResponse> updateRequest(@Path("gId") String gId, @Path("rId") String rId, @Field("uId") String uId, @Field("product") String product, @Field("deadline") String deadline, @Field("location") int location, @Field("done") boolean done, @Field("token") String token);
 
 //    @GET("{gId}/requests/{rId}")
-//    Call<Request> getRequestsDetailByGidAndRid(@Path("gid") String gid, @Path("rid") String rid, @Query("token") String token);
+//    Call<RequestList> getRequestsDetailByGidAndRid(@Path("gid") String gid, @Path("rid") String rid, @Query("token") String token);
 
     @GET("groups/{gId}/members")
     Call<MemberListResponse> getMemberListByGid(@Path("gId") String gId, @Query("token") String token);
diff --git a/app/src/main/java/com/example/cosmosclient/views/GroupListActivity.java b/app/src/main/java/com/example/cosmosclient/views/GroupListActivity.java
index 386045f..72f62f1 100644
--- a/app/src/main/java/com/example/cosmosclient/views/GroupListActivity.java
+++ b/app/src/main/java/com/example/cosmosclient/views/GroupListActivity.java
@@ -97,7 +97,7 @@
 //                    Toast.makeText(GroupListActivity.this, parent.getAdapter().getItem(position).toString(),
 //                            Toast.LENGTH_SHORT).show();
                     GroupJson group = result.getGroups().get(position);
-//                    app.setCurrentGroup(new Group(group));
+                    ((Cosmos)getApplication()).setCurrentGroup(new Group(group));
 
                     Intent intent=new Intent(GroupListActivity.this, com.example.cosmosclient.views.RequestListActivity.class);
                     startActivity(intent);
diff --git a/app/src/main/java/com/example/cosmosclient/views/RequestListActivity.java b/app/src/main/java/com/example/cosmosclient/views/RequestListActivity.java
index ed8ce4c..38cdbd7 100644
--- a/app/src/main/java/com/example/cosmosclient/views/RequestListActivity.java
+++ b/app/src/main/java/com/example/cosmosclient/views/RequestListActivity.java
@@ -29,7 +29,7 @@
 import com.example.cosmosclient.app.Cosmos;
 import com.example.cosmosclient.entities.AddRequestsResponse;
 import com.example.cosmosclient.entities.Request;
-import com.example.cosmosclient.entities.Requests;
+import com.example.cosmosclient.entities.RequestList;
 import com.example.cosmosclient.resources.GroupsRest;
 import com.example.cosmosclient.yolp.Yolp;
 
@@ -67,7 +67,7 @@
     Toast toast; //動作テスト用
 
     //Request List
-    Requests requests;
+    RequestList requestList;
 
     //Color制御
     boolean productColorFlag = true; //買うもの (true:白, false:黒)
@@ -106,7 +106,7 @@
                 product.setColorFilter(null);
                 productColorFlag = true;
                 ResetRequestListTable();
-                AddRequestListTable(requests);
+                AddRequestListTable(requestList);
             } else {
                 if(deadlineRotationFlag) {
                     deadlineRotationFlag = false;
@@ -140,7 +140,7 @@
                 deadline.setColorFilter(null);
                 deadlineColorFlag = true;
                 ResetRequestListTable();
-                AddRequestListTable(requests);
+                AddRequestListTable(requestList);
                 if(!deadlineRotationFlag) {
                     deadline.setRotation(0);
                 }
@@ -181,7 +181,7 @@
                 location.setColorFilter(null);
                 locationColorFlag = true;
                 ResetRequestListTable();
-                AddRequestListTable(requests);
+                AddRequestListTable(requestList);
             } else {
                 if(deadlineRotationFlag) {
                     deadlineRotationFlag = false;
@@ -215,7 +215,7 @@
                 name.setColorFilter(null);
                 nameColorFlag = true;
                 ResetRequestListTable();
-                AddRequestListTable(requests);
+                AddRequestListTable(requestList);
             } else {
                 if(deadlineRotationFlag) {
                     deadlineRotationFlag = false;
@@ -286,13 +286,13 @@
             final String token = app.getToken();
 
             for(Integer i : selectedRequestList.keySet()) {
-                Request request  = requests.getRequest(i - 1);
+                Request request  = requestList.getRequest(i - 1);
                 String deadline = null;
                 if(request.getDeadline() != null) {
                     deadline = String.format("%d-%02d-%02d %02d:%02d:%02d", request.getDeadline().getYear(), request.getDeadline().getMonth() + 1, request.getDeadline().getDate() + 1, 23, 59, 59);
                 }
                 final Call<AddRequestsResponse> updateReqestCall = requestsService.updateRequest(gId, request.getrId(), uId, request.getProduct(), deadline, request.getLocation(), true, token);
-                requests.removeRequest(i - 1);
+                requestList.removeRequest(i - 1);
 
                 //サーバからのレスポンス
                 updateReqestCall.enqueue(new Callback<AddRequestsResponse>() {
@@ -304,7 +304,7 @@
                             Toast.makeText(RequestListActivity.this, "RequestListを達成しました", Toast.LENGTH_SHORT).show();
 
                             ResetRequestListTable();
-                            AddRequestListTable(requests);
+                            AddRequestListTable(requestList);
                         } else {
                             try {
                                 System.out.println(response.errorBody().string());
@@ -431,36 +431,27 @@
     protected void onStart() {
         super.onStart();
 
-        //retrofitの処理
-//        final Retrofit retrofit = new Retrofit.Builder()
-////                .baseUrl("http://nitta-lab-www.is.konan-u.ac.jp/cosmos/")
-//                .baseUrl("http://10.0.2.2:8080/")
-//                .addConverterFactory(JacksonConverterFactory.create())
-//                .build();
-
-//            //interfaceから実装を取得
-//            final GroupsRest requestsService = retrofit.create(GroupsRest.class);
-
         //RequestList取得するための必要な情報
-        Cosmos app = (Cosmos) getApplication();
+        final Cosmos app = (Cosmos) getApplication();
         final String gId = app.getCurentGroup().getgId();
         final String token = app.getToken();
         final boolean detail = true;
         int quantity = 20;
 
-        final Call<Requests> requestsListByGidCall = requestsService.getRequestsListByGid(gId, token, detail, quantity);
+        final Call<RequestList> requestsListByGidCall = requestsService.getRequestsListByGid(gId, token, detail, quantity);
 
         //サーバからのレスポンス
-        requestsListByGidCall.enqueue(new Callback<Requests>() {
+        requestsListByGidCall.enqueue(new Callback<RequestList>() {
             //成功時
             @Override
-            public void onResponse(Call<Requests> call, Response<Requests> response) {
+            public void onResponse(Call<RequestList> call, Response<RequestList> response) {
                 if (response.isSuccessful()) {
                     TimeZone.setDefault(TimeZone.getTimeZone("Asia/Tokyo"));
-                    requests = response.body();
+                    requestList = response.body();
+                    app.getCurentGroup().setRequestList(requestList);
 
                     //Add RequestList Table
-                    AddRequestListTable(requests);
+                    AddRequestListTable(requestList);
 
                     Toast.makeText(RequestListActivity.this, "RequestListを取得しました", Toast.LENGTH_SHORT).show();
                 } else {
@@ -476,7 +467,7 @@
 
             //失敗時
             @Override
-            public void onFailure(Call<Requests> call, Throwable t) {
+            public void onFailure(Call<RequestList> call, Throwable t) {
                 t.printStackTrace();
                 Toast.makeText(RequestListActivity.this, "RequestListの取得失敗しました", Toast.LENGTH_SHORT).show();
             }
@@ -490,10 +481,10 @@
 
         ResetRequestListTable();
 
-        requests.clearRequest();
+        requestList.clearRequest();
 
 //        //Add RequestList Table
-//        AddRequestListTable(requests);
+//        AddRequestListTable(requestList);
     }
 
     @SuppressWarnings("StatementWithEmptyBody")
@@ -524,21 +515,21 @@
         return true;
     }
 
-    private int ConvertMonth(int i, Requests requests) {
-        return requests.getRequest(i).getDeadline().getMonth() + 1;
+    private int ConvertMonth(int i, RequestList requestList) {
+        return requestList.getRequest(i).getDeadline().getMonth() + 1;
     }
 
     @TargetApi(Build.VERSION_CODES.O)
-    private void AddRequestListTable(Requests requests) {
+    private void AddRequestListTable(RequestList requestList) {
         Date now = new Date();
 //        TableLayout requesttable = (TableLayout)findViewById(R.id.RequestList);
         requesttable.setShrinkAllColumns(true);
 
-        for (int i = 0; i < requests.getRequestCount(); i++) {
+        for (int i = 0; i < requestList.getRequestCount(); i++) {
             TableRow tableRow = new TableRow(this);
 
             TextView textProduct = new TextView(this);
-            textProduct.setText(requests.getRequest(i).getProduct());
+            textProduct.setText(requestList.getRequest(i).getProduct());
             textProduct.setTextSize(20);
             textProduct.setHeight(150);
             textProduct.setGravity(Gravity.CENTER);
@@ -554,8 +545,8 @@
 //            if (requestList.get(i).getDeadline().getMonth() == now.getMonth() && requestList.get(i).getDeadline().getDate() - now.getDate() == 1) {
 //                textDeadline.setText("明日まで");
 //            }
-            if(requests.getRequest(i).getDeadline() != null) {
-                textDeadline.setText(ConvertMonth(i, requests) + "/" + requests.getRequest(i).getDeadline().getDate());
+            if(requestList.getRequest(i).getDeadline() != null) {
+                textDeadline.setText(ConvertMonth(i, requestList) + "/" + requestList.getRequest(i).getDeadline().getDate());
             }
 //            textDeadline.setText(now.getMonth() + "/" + now.getDate());
             textDeadline.setTextSize(20);
@@ -564,8 +555,8 @@
             tableRow.addView(textDeadline, new TableRow.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT));
 
             TextView textLocation = new TextView(this);
-            if(Yolp.getInstance().getSubCategoryByCode(requests.getRequest(i).getLocation()) != null) {
-                textLocation.setText(Yolp.getInstance().getSubCategoryByCode(requests.getRequest(i).getLocation()).getSubName());
+            if(Yolp.getInstance().getSubCategoryByCode(requestList.getRequest(i).getLocation()) != null) {
+                textLocation.setText(Yolp.getInstance().getSubCategoryByCode(requestList.getRequest(i).getLocation()).getSubName());
             }
 
             textLocation.setTextSize(20);
@@ -574,7 +565,7 @@
             tableRow.addView(textLocation, new TableRow.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT));
 
             TextView textName = new TextView(this);
-            textName.setText(requests.getRequest(i).getIssuer().getName());
+            textName.setText(requestList.getRequest(i).getIssuer().getName());
             textName.setTextSize(20);
             textName.setHeight(150);
             textName.setGravity(Gravity.CENTER);
@@ -597,38 +588,38 @@
         }
     }
 
-    private Requests SortProduct() {
-        List<Request> productsortRequestlist =  (List<Request>) requests.getRequests();
+    private RequestList SortProduct() {
+        List<Request> productsortRequestlist =  (List<Request>) requestList.getRequests();
 
         Collections.sort(productsortRequestlist, productSortComparator);
-        return new Requests(productsortRequestlist);
+        return new RequestList(productsortRequestlist);
     }
 
-    private Requests SortDeadline() {
-        List<Request> deadlinesortRequestlist =  (List<Request>) requests.getRequests();
+    private RequestList SortDeadline() {
+        List<Request> deadlinesortRequestlist =  (List<Request>) requestList.getRequests();
 
         Collections.sort(deadlinesortRequestlist, deadlineSortComparator);
-        return new Requests(deadlinesortRequestlist);
+        return new RequestList(deadlinesortRequestlist);
     }
 
-    private Requests ReverseDeadline() {
-        List<Request> deadlinesortRequestlist =  (List<Request>) requests.getRequests();
+    private RequestList ReverseDeadline() {
+        List<Request> deadlinesortRequestlist =  (List<Request>) requestList.getRequests();
 
         Collections.sort(deadlinesortRequestlist, deadlineReverseComparator);
-        return new Requests(deadlinesortRequestlist);
+        return new RequestList(deadlinesortRequestlist);
     }
 
-    private Requests SortLocation() {
-        List<Request> locationsortRequestlist =  (List<Request>) requests.getRequests();
+    private RequestList SortLocation() {
+        List<Request> locationsortRequestlist =  (List<Request>) requestList.getRequests();
 
         Collections.sort(locationsortRequestlist, locationSortComparator);
-        return  new Requests(locationsortRequestlist);
+        return  new RequestList(locationsortRequestlist);
     }
 
-    private Requests SortName() {
-        List<Request> namesortRequestlist =  (List<Request>) requests.getRequests();
+    private RequestList SortName() {
+        List<Request> namesortRequestlist =  (List<Request>) requestList.getRequests();
 
         Collections.sort(namesortRequestlist, nameSortComparator);
-        return new Requests(namesortRequestlist);
+        return new RequestList(namesortRequestlist);
     }
 }
\ No newline at end of file