diff --git a/app/src/main/java/org/ntlab/amaryllis/client/Amaryllis.java b/app/src/main/java/org/ntlab/amaryllis/client/Amaryllis.java
index 53f8683..12ce8ba 100644
--- a/app/src/main/java/org/ntlab/amaryllis/client/Amaryllis.java
+++ b/app/src/main/java/org/ntlab/amaryllis/client/Amaryllis.java
@@ -101,19 +101,6 @@
         return amaryllisbackgroundservice;
     }
 
-    public void setIndex(){
-        SharedPreferences prefData = getSharedPreferences("pref_data", MODE_PRIVATE);
-        SharedPreferences.Editor editor = prefData.edit();
-        editor.putInt("indexData", index);
-        editor.commit();
-    }
-
-    public int getIndex(){
-        SharedPreferences prefData = getSharedPreferences("pref_data", MODE_PRIVATE);
-        index = prefData.getInt("indexData",0);
-        return index;
-    }
-
     public void getPlayList(){
     }