diff --git a/app/src/main/kotlin/jackall/moncalc/Contract/MainServiceContract.kt b/app/src/main/kotlin/jackall/moncalc/Contract/MainServiceContract.kt
new file mode 100644
index 0000000..b497135
--- /dev/null
+++ b/app/src/main/kotlin/jackall/moncalc/Contract/MainServiceContract.kt
@@ -0,0 +1,9 @@
+package jackall.moncalc.Contract
+
+/**
+ * Created by matsumoto_k on 2017/11/01.
+ */
+interface MainServiceContract {
+    fun showMoveView()
+    fun showRegistView()
+}
\ No newline at end of file
diff --git a/app/src/main/kotlin/jackall/moncalc/service/MainService.kt b/app/src/main/kotlin/jackall/moncalc/service/MainService.kt
index 629601f..737aae0 100644
--- a/app/src/main/kotlin/jackall/moncalc/service/MainService.kt
+++ b/app/src/main/kotlin/jackall/moncalc/service/MainService.kt
@@ -11,6 +11,7 @@
 import android.support.v4.app.NotificationCompat
 import android.view.*
 import jackall.moncalc.Const
+import jackall.moncalc.Contract.MainServiceContract
 import jackall.moncalc.R
 import jackall.moncalc.common.PreferenceKeys
 import jackall.moncalc.common.PreferenceNames
@@ -21,7 +22,7 @@
 /**
  * Created by matsumoto_k on 2017/11/01.
  */
-class MainService : Service() {
+class MainService : Service(), MainServiceContract {
 
     val mySharedPref by lazy { MySharedPref(this, PreferenceNames.CONFIG) }
     val moveOverlayView: ViewGroup by lazy { LayoutInflater.from(this).inflate(R.layout.move_overlay, null) as ViewGroup }
@@ -102,12 +103,12 @@
                     PixelFormat.TRANSLUCENT)
         }
 
-        registBinding.registViewModel = OverlayRegistViewModel()
+        registBinding.registViewModel = OverlayRegistViewModel(this as MainServiceContract)
 
         registViewParams?.gravity = Gravity.TOP
     }
 
-    private fun showMoveView() {
+    override fun showMoveView() {
         moveViewParams?.x = mySharedPref.getValue(PreferenceKeys.VIEWX, Int::class.java, 0) as Int
         moveViewParams?.y = mySharedPref.getValue(PreferenceKeys.VIEWY, Int::class.java, 0) as Int
 
@@ -118,7 +119,7 @@
         windowManager.addView(moveOverlayView, moveViewParams)
     }
 
-    private fun showRegistView() {
+    override fun showRegistView() {
         if (moveOverlayView.isShown) {
             windowManager.removeView(moveOverlayView)
         }
@@ -171,4 +172,6 @@
     override fun onBind(intent: Intent?): IBinder? {
         return null
     }
+
+
 }
\ No newline at end of file
diff --git a/app/src/main/kotlin/jackall/moncalc/viewmodel/OverlayRegistViewModel.kt b/app/src/main/kotlin/jackall/moncalc/viewmodel/OverlayRegistViewModel.kt
index 24b0041..135c9f8 100644
--- a/app/src/main/kotlin/jackall/moncalc/viewmodel/OverlayRegistViewModel.kt
+++ b/app/src/main/kotlin/jackall/moncalc/viewmodel/OverlayRegistViewModel.kt
@@ -2,12 +2,13 @@
 
 import android.databinding.BaseObservable
 import android.view.View
+import jackall.moncalc.Contract.MainServiceContract
 
 /**
  * Created by matsumoto_k on 2017/11/01.
  */
-class OverlayRegistViewModel : BaseObservable() {
+class OverlayRegistViewModel(val mainServiceContract: MainServiceContract) : BaseObservable() {
     fun onClickMin(view: View) {
-        println("onClickMin")
+        mainServiceContract.showMoveView()
     }
 }
\ No newline at end of file