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 2f1b834..4a451f8 100644
--- a/app/src/main/java/org/ntlab/irisclient/viewmodels/RoomViewModel.java
+++ b/app/src/main/java/org/ntlab/irisclient/viewmodels/RoomViewModel.java
@@ -34,6 +34,7 @@
     private List<Member> sortedMembersList;
     private List<Member> membersPreData;
     private Settings settingsPreData;
+    private int preState = 0;
 
     //------------------------------------------------------------------
     //コンストラクタ
@@ -195,19 +196,21 @@
 
     }
 
-    //部屋の削除(OwnerActivityのみ)
-    public void deleteRoom(String rid){
-        Call<Void> call = roomsRest.deleteRooms(rid);
+    //オーナーが退出ボタンを押した時の通信(OwnerActivityのみ)
+    public void ownerLeaving(String rid, String nickname) {
+        Call<Void> call = roomsRest.putState(rid,nickname,-1);
 
         call.enqueue(new Callback<Void>() {
             @Override
             public void onResponse(Call<Void> call, Response<Void> response) {
-                setRoomExist(false);
+                if (response.isSuccessful()){
+                    System.out.println("通信成功:ownerLeaving");
+                    deleteRoom(rid);
+                }
             }
-
             @Override
             public void onFailure(Call<Void> call, Throwable t) {
-                System.out.println("通信失敗：deleteRoom");
+                System.out.println("通信失敗:ownerLeaving");
                 System.out.println(t);
             }
         });
@@ -269,6 +272,25 @@
             }
         });
     }
+
+    //部屋の削除
+    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);
+            }
+        });
+    }
+
     //-----------------------------------------------------------------------------
     // updates
     @Override
@@ -335,7 +357,7 @@
             @Override
             public void onResponse(Call<Settings> call, Response<Settings> response) {
                 if (response.isSuccessful()){
-                    
+
                     settingsMutableLiveData.setValue(response.body());
                     settingsPreData = response.body();
 
@@ -357,7 +379,10 @@
             public void onResponse(Call<Integer> call, Response<Integer> response) {
                 if (response.isSuccessful()){
 
-                    stateLiveData.setValue(response.body());
+                    if(preState != response.body()){
+                        preState = response.body();
+                        stateLiveData.setValue(response.body());
+                    }
 
                     /*
                     if(response.body().equals(settingsPreData)){