diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/tests/SampleGame2Fragment.java b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/tests/SampleGame2Fragment.java
index 5c9b210..b36586c 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/tests/SampleGame2Fragment.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/tests/SampleGame2Fragment.java
@@ -1,6 +1,7 @@
 package org.ntlab.radishforandroidstudio.cactusClient.tests;
 
 import android.os.Bundle;
+import android.support.annotation.Nullable;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
@@ -113,6 +114,7 @@
         camera.setViewLine(pocha.getDirection());
     }
 
+    @Nullable
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTUIFragment.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTUIFragment.java
index 10742e2..e528f91 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTUIFragment.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTUIFragment.java
@@ -1,12 +1,12 @@
 package org.ntlab.radishforandroidstudio.framework.RWT;
 
+import android.support.annotation.NonNull;
 import android.support.v4.app.Fragment;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Button;
 
 import org.ntlab.radishforandroidstudio.R;
 
@@ -21,14 +21,15 @@
     }
 
     @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.ui_fragment, null);
+        return inflater.inflate(R.layout.ui_fragment, container, false);
     }
 
     @Override
     public boolean onTouch(View v, MotionEvent event) {
         System.out.println("RWTUIFragment touch");
+        v.performClick();
         return false;
     }
 }
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/gameMain/RealTime3DFragment.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/gameMain/RealTime3DFragment.java
index 367a852..67c6d5b 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/gameMain/RealTime3DFragment.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/gameMain/RealTime3DFragment.java
@@ -1,19 +1,14 @@
 package org.ntlab.radishforandroidstudio.framework.gameMain;
 
-import android.support.v4.app.Fragment;
 import android.os.Bundle;
+import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-import android.support.v4.app.FragmentManager;
-import android.support.v4.app.FragmentTransaction;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.FrameLayout;
-import android.widget.LinearLayout;
 
 import org.ntlab.radishforandroidstudio.R;
 import org.ntlab.radishforandroidstudio.framework.RWT.RWTSurfaceView;
-import org.ntlab.radishforandroidstudio.framework.RWT.RWTUIFragment;
 import org.ntlab.radishforandroidstudio.framework.model3D.Universe;
 import org.ntlab.radishforandroidstudio.framework.view3D.Camera3D;
 
@@ -27,15 +22,13 @@
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         universe = new Universe();
-
         camera = new Camera3D(universe);
-
-//        getActivity().addContentView(view,new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
     }
 
+    @Nullable
     @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container,  Bundle savedInstanceState) {
-        return parentView;
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_real_time_3d, container, false);
     }
 
     @Override