diff --git a/app/src/main/java/keijumt/todoapp/MainActivity.kt b/app/src/main/java/keijumt/todoapp/MainActivity.kt
index 82cf3bd..6476b18 100644
--- a/app/src/main/java/keijumt/todoapp/MainActivity.kt
+++ b/app/src/main/java/keijumt/todoapp/MainActivity.kt
@@ -1,17 +1,30 @@
 package keijumt.todoapp
 
+import android.arch.lifecycle.ViewModelProviders
+import android.databinding.DataBindingUtil
 import android.os.Bundle
 import android.support.v4.app.Fragment
 import dagger.android.AndroidInjector
 import dagger.android.support.HasSupportFragmentInjector
 import keijumt.todoapp.activity.BaseActivity
+import keijumt.todoapp.databinding.ActivityMainBinding
 import keijumt.todoapp.di.Injectable
+import keijumt.todoapp.viewmodel.MainViewModel
 
+/**
+ * メイン画面のActivity
+ * Created by matsumoto_k on 2018/03/06.
+ */
 class MainActivity : BaseActivity(), HasSupportFragmentInjector, Injectable {
 
+    lateinit var binding: ActivityMainBinding
+    lateinit var mainViewModel: MainViewModel
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
+        binding = DataBindingUtil.setContentView(this, R.layout.activity_main)
+        mainViewModel = ViewModelProviders.of(this, viewModelFactory).get(MainViewModel::class.java)
+        lifecycle.addObserver(mainViewModel)
     }
 
     override fun supportFragmentInjector(): AndroidInjector<Fragment> {