diff --git a/app/src/main/java/com/example/sprout/refactor/activity/RoomCreateActivity.java b/app/src/main/java/com/example/sprout/refactor/activity/RoomCreateActivity.java
index 4d853aa..e03f763 100644
--- a/app/src/main/java/com/example/sprout/refactor/activity/RoomCreateActivity.java
+++ b/app/src/main/java/com/example/sprout/refactor/activity/RoomCreateActivity.java
@@ -1,15 +1,10 @@
 package com.example.sprout.refactor.activity;
 
-import android.content.Intent;
 import android.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
-import android.widget.Toast;
 
 import com.example.sprout.R;
 import com.example.sprout.databinding.RfActivityRoomCreateBinding;
-import com.example.sprout.refactor.common.ActivityEvent;
-import com.example.sprout.refactor.contract.ViewContract;
 import com.example.sprout.refactor.viewmodel.RoomCreateViewModel;
 
 /**
@@ -17,38 +12,29 @@
  *
  * @author matsumoto_k
  */
-public class RoomCreateActivity extends AppCompatActivity implements ViewContract {
+public class RoomCreateActivity extends BaseActivity {
+
+    private RoomCreateViewModel roomCreateViewModel = null;
+    private RfActivityRoomCreateBinding binding = null;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        RfActivityRoomCreateBinding binding = DataBindingUtil.setContentView(this, R.layout.rf_activity_room_create);
-        RoomCreateViewModel roomCreateViewModel = new RoomCreateViewModel((ViewContract) this);
+        binding = DataBindingUtil.setContentView(this, R.layout.rf_activity_room_create);
+        roomCreateViewModel = new RoomCreateViewModel();
         binding.setViewModel(roomCreateViewModel);
         getLifecycle().addObserver(roomCreateViewModel);
     }
 
     @Override
-    public void startActivity(ActivityEvent event) {
-        switch (event) {
-            case ROOM_MAIN:
-                startActivity(new Intent(RoomCreateActivity.this, RoomMainActivity.class));
-                break;
-        }
+    protected void onResume() {
+        super.onResume();
+        addUiObserver(roomCreateViewModel);
     }
 
     @Override
-    public void finishActivity() {
-        finish();
-    }
-
-    @Override
-    public void showShortToast(String message) {
-        Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
-    }
-
-    @Override
-    public void showLongToast(String message) {
-        Toast.makeText(this, message, Toast.LENGTH_LONG).show();
+    protected void onPause() {
+        super.onPause();
+        removeUiObserver(roomCreateViewModel);
     }
 }