diff --git a/app/src/main/kotlin/jackall/moncalc/db/FruitRealmHelper.kt b/app/src/main/kotlin/jackall/moncalc/db/FruitRealmHelper.kt
index 36f8d05..3cf449f 100644
--- a/app/src/main/kotlin/jackall/moncalc/db/FruitRealmHelper.kt
+++ b/app/src/main/kotlin/jackall/moncalc/db/FruitRealmHelper.kt
@@ -1,25 +1,25 @@
 package jackall.moncalc.db
 
-import io.realm.Realm
+import io.realm.RealmResults
 import jackall.moncalc.vo.Fruit
 
 /**
  * Created by matsumoto_k on 2017/11/02.
  */
 class FruitRealmHelper : RealmHelper<Fruit>() {
-    override fun insert(mRealm: Realm, realmObject: Fruit) {
-        mRealm.executeTransaction {
-            mRealm.copyToRealmOrUpdate(realmObject)
+    override fun insert(realmObject: Fruit) {
+        realm.executeTransaction {
+            realm.copyToRealmOrUpdate(realmObject)
         }
     }
 
-    override fun insert(mRealm: Realm, realmObject: List<Fruit>) {
-        mRealm.executeTransaction {
-            mRealm.copyToRealmOrUpdate(realmObject)
+    override fun insert(realmObject: List<Fruit>) {
+        realm.executeTransaction {
+            realm.copyToRealmOrUpdate(realmObject)
         }
     }
 
-    override fun findAll(mRealm: Realm): List<Fruit> {
-        return mRealm.where(Fruit::class.java).findAll()
+    override fun findAll(): RealmResults<Fruit> {
+        return realm.where(Fruit::class.java).findAll()
     }
 }
\ No newline at end of file
diff --git a/app/src/main/kotlin/jackall/moncalc/db/RealmHelper.kt b/app/src/main/kotlin/jackall/moncalc/db/RealmHelper.kt
index d04116e..6af1a1a 100644
--- a/app/src/main/kotlin/jackall/moncalc/db/RealmHelper.kt
+++ b/app/src/main/kotlin/jackall/moncalc/db/RealmHelper.kt
@@ -2,12 +2,17 @@
 
 import io.realm.Realm
 import io.realm.RealmObject
+import io.realm.RealmResults
 
 /**
  * Created by matsumoto_k on 2017/11/02.
  */
 abstract class RealmHelper<T : RealmObject> {
-    abstract fun insert(mRealm: Realm, realmObject: T)
-    abstract fun insert(mRealm: Realm, realmObjects: List<T>)
-    abstract fun findAll(mRealm: Realm): List<T>
+    protected val realm = Realm.getInstance(RealmConfig().config)
+    abstract fun insert(realmObject: T)
+    abstract fun insert(realmObjects: List<T>)
+    abstract fun findAll(): RealmResults<T>
+    fun close() {
+        realm.close()
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/kotlin/jackall/moncalc/db/TempleRealmHelper.kt b/app/src/main/kotlin/jackall/moncalc/db/TempleRealmHelper.kt
index e710af2..29ac556 100644
--- a/app/src/main/kotlin/jackall/moncalc/db/TempleRealmHelper.kt
+++ b/app/src/main/kotlin/jackall/moncalc/db/TempleRealmHelper.kt
@@ -1,25 +1,25 @@
 package jackall.moncalc.db
 
-import io.realm.Realm
+import io.realm.RealmResults
 import jackall.moncalc.vo.Temple
 
 /**
  * Created by matsumoto_k on 2017/11/02.
  */
 class TempleRealmHelper : RealmHelper<Temple>() {
-    override fun insert(mRealm: Realm, realmObject: Temple) {
-        mRealm.executeTransaction {
-            mRealm.copyToRealmOrUpdate(realmObject)
+    override fun insert(realmObject: Temple) {
+        realm.executeTransaction {
+            realm.copyToRealmOrUpdate(realmObject)
         }
     }
 
-    override fun insert(mRealm: Realm, realmObject: List<Temple>) {
-        mRealm.executeTransaction {
-            mRealm.copyToRealmOrUpdate(realmObject)
+    override fun insert(realmObject: List<Temple>) {
+        realm.executeTransaction {
+            realm.copyToRealmOrUpdate(realmObject)
         }
     }
 
-    override fun findAll(mRealm: Realm): List<Temple> {
-        return mRealm.where(Temple::class.java).findAll()
+    override fun findAll(): RealmResults<Temple> {
+        return realm.where(Temple::class.java).findAll()
     }
 }
\ No newline at end of file