diff --git a/app/src/main/java/org/ntlab/irisclient/resources/RoomsRest.java b/app/src/main/java/org/ntlab/irisclient/resources/RoomsRest.java
index 18ee92e..aaa7c08 100644
--- a/app/src/main/java/org/ntlab/irisclient/resources/RoomsRest.java
+++ b/app/src/main/java/org/ntlab/irisclient/resources/RoomsRest.java
@@ -71,7 +71,7 @@
     //--------------------------------------------------
     //退出するメソッド
     @DELETE("rooms/{rid}/members/{nickname}")
-    Call<RoomJson> deleteMember(
+    Call<String> deleteMember(
             @Path("rid") String rid,
             @Path("nickname") String nickname
     );
diff --git a/app/src/main/java/org/ntlab/irisclient/viewmodels/RoomViewModel.java b/app/src/main/java/org/ntlab/irisclient/viewmodels/RoomViewModel.java
index 0290baa..2f1b834 100644
--- a/app/src/main/java/org/ntlab/irisclient/viewmodels/RoomViewModel.java
+++ b/app/src/main/java/org/ntlab/irisclient/viewmodels/RoomViewModel.java
@@ -23,10 +23,12 @@
 
     //フィールド
     private String rid;
+    private boolean roomExist;
+    final private Retrofit retrofit;
+    final private RoomsRest roomsRest;
     final private MutableLiveData<List<Member>> membersLiveData;
     final private MutableLiveData<Settings> settingsMutableLiveData;
     final private MutableLiveData<Integer> stateLiveData;
-    final private Retrofit retrofit;
 
     //更新比較用フィールド
     private List<Member> sortedMembersList;
@@ -43,6 +45,8 @@
                 .baseUrl("http://nitta-lab-www.is.konan-u.ac.jp/iris/")
                 .addConverterFactory(JacksonConverterFactory.create())
                 .build();
+        this.roomsRest = retrofit.create(RoomsRest.class);
+        setRoomExist(true);
     }
 
     //-----------------------------------------------------------------
@@ -50,6 +54,10 @@
     public void setRid(String rid){
         this.rid = rid;
     }
+    private void setRoomExist(boolean bool) {
+        this.roomExist = bool;
+    }
+
     // getter
     public LiveData<List<Member>> getMembersLiveData() {
         return this.membersLiveData;
@@ -60,7 +68,9 @@
     public LiveData<Integer> getStateLiveData() {
         return this.stateLiveData;
     }
-
+    public boolean getRoomExist(){
+        return this.roomExist;
+    }
     private boolean compareMembers(List<Member> a, List<Member> b) {
 
         int i;
@@ -83,7 +93,6 @@
         //全ての要素が一緒ならtrueを返す
         return true;
     }
-
     private List<Member> sortMembersList(List<Member> oldMembers) {
         List<Member> sortedMembers = new ArrayList<>();
         List<List<Integer>> priorityInteger = new ArrayList<>(5);
@@ -140,8 +149,6 @@
             priorityInteger.get(i).forEach(num -> sortedMembers.add(oldMembers.get(num)));
         }
 
-        //System.out.println(sortedMembers);
-        //sortedMembers.forEach(k -> System.out.println(k.getNickname() + " " + k.getBelongs() + " " + k.isMaster()));
         return sortedMembers;
     }
 
@@ -149,7 +156,7 @@
     //各Activityでのボタン処理
     //チーム&マスター変更
     public void changeBelongsAndMaster(String rid, String nickname, String belongs, Boolean isMaster) {
-        final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
+        //final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
         Call<String> call = roomsRest.putMember(rid, nickname, belongs, isMaster);
 
         call.enqueue(new Callback<String>() {
@@ -167,15 +174,48 @@
         });
     }
 
-    //メンバー削除
+    //メンバー削除(MemberActivityのみ)
     public void deleteMember(String rid, String nickname) {
-        final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
-        Call<RoomJson> call = roomsRest.deleteMember(rid, nickname);
+        //final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
+        Call<String> call = roomsRest.deleteMember(rid, nickname);
+
+        call.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(Call<String> call, Response<String> response) {
+                if (response.isSuccessful()){
+                    System.out.println("通信成功：退出しました");
+                }
+            }
+            @Override
+            public void onFailure(Call<String> call, Throwable t) {
+                System.out.println("通信失敗：");
+                System.out.println(t);
+            }
+        });
+
+    }
+
+    //部屋の削除(OwnerActivityのみ)
+    public void deleteRoom(String rid){
+        Call<Void> call = roomsRest.deleteRooms(rid);
+
+        call.enqueue(new Callback<Void>() {
+            @Override
+            public void onResponse(Call<Void> call, Response<Void> response) {
+                setRoomExist(false);
+            }
+
+            @Override
+            public void onFailure(Call<Void> call, Throwable t) {
+                System.out.println("通信失敗：deleteRoom");
+                System.out.println(t);
+            }
+        });
     }
 
     //スタートボタンの処理(OwnerActivityのみ)
     public void startDrawing(String rid, String nickname) {
-        final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
+        //final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
         Call<Void> call = roomsRest.putState(rid,nickname,2);
 
         call.enqueue(new Callback<Void>() {
@@ -193,9 +233,26 @@
         });
     }
 
+    //ランダムボタンの処理(OwnerActivityのみ)
+    public void randomTeam(String rid, String nickname) {
+        Call<Void> call = roomsRest.putMembers(rid, nickname);
+
+        call.enqueue(new Callback<Void>() {
+            @Override
+            public void onResponse(Call<Void> call, Response<Void> response) {
+                System.out.println("ランダムにチーム変更へ");
+            }
+
+            @Override
+            public void onFailure(Call<Void> call, Throwable t) {
+                System.out.println("通信失敗：randomTeam");
+                System.out.println(t);
+            }
+        });
+    }
+
     //設定情報の変更処理(OwnerActivityのみ)
     public void changeSettings(String rid, boolean dTimer, int dTimerTimes, boolean gTimer, int gTimerTimes, int gTimerFTTimes) {
-        final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
         Call<Void> call = roomsRest.putSettings(rid, dTimer, dTimerTimes, gTimer, gTimerTimes, gTimerFTTimes);
 
         call.enqueue(new Callback<Void>() {
@@ -223,8 +280,6 @@
 
     //部屋の情報の更新(List<Members>)
     public void updateMembers(String rid) {
-
-        final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
         Call<List<Member>> call = roomsRest.getRoomMember(rid);
 
         call.enqueue(new Callback<List<Member>>() {
@@ -274,27 +329,16 @@
 
     //設定情報の更新(Settings)
     public void updateSettings(String rid) {
-
-        final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
         Call<Settings> call = roomsRest.getSettings(rid);
 
         call.enqueue(new Callback<Settings>() {
             @Override
             public void onResponse(Call<Settings> call, Response<Settings> response) {
                 if (response.isSuccessful()){
-
+                    
                     settingsMutableLiveData.setValue(response.body());
                     settingsPreData = response.body();
 
-                    /*
-                    if(response.body().equals(settingsPreData)){
-                        //値が一緒なら書き換えない
-                    }else{
-                        //値が異なるときのみライブデータを上書き
-                        settingsMutableLiveData.setValue(response.body());
-                        settingsPreData = response.body();
-                    }*/
-
                 }
             }
 
@@ -306,7 +350,6 @@
 
     //部屋の状態情報の更新(Integer)
     public void updateState(String rid) {
-        final RoomsRest roomsRest = retrofit.create(RoomsRest.class);
         Call<Integer> call = roomsRest.getState(rid);
 
         call.enqueue(new Callback<Integer>() {