diff --git a/app/src/main/java/com/example/cosmosclient/views/GroupList.java b/app/src/main/java/com/example/cosmosclient/views/GroupList.java
new file mode 100644
index 0000000..b512f02
--- /dev/null
+++ b/app/src/main/java/com/example/cosmosclient/views/GroupList.java
@@ -0,0 +1,109 @@
+package com.example.cosmosclient.views;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.design.widget.FloatingActionButton;
+import android.support.design.widget.Snackbar;
+import android.view.View;
+import android.support.v4.view.GravityCompat;
+import android.support.v7.app.ActionBarDrawerToggle;
+import android.view.MenuItem;
+import android.support.design.widget.NavigationView;
+import android.support.v4.widget.DrawerLayout;
+
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.view.Menu;
+import android.widget.TextView;
+
+import com.example.cosmosclient.R;
+
+public class GroupList extends AppCompatActivity
+        implements NavigationView.OnNavigationItemSelectedListener {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_group_list);
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+
+        /*とりあえずの画面遷移なので変更するかも*/
+        TextView group1 = findViewById(R.id.group1);
+        group1.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent=new Intent(GroupList.this, com.example.cosmosclient.views.RequestListActivity.class);
+                startActivity(intent);
+            }
+        });
+
+        DrawerLayout drawer = findViewById(R.id.drawer_layout);
+        NavigationView navigationView = findViewById(R.id.nav_view);
+        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
+                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
+        drawer.addDrawerListener(toggle);
+        toggle.syncState();
+        navigationView.setNavigationItemSelectedListener(this);
+    }
+
+    @Override
+    public void onBackPressed() {
+        DrawerLayout drawer = findViewById(R.id.drawer_layout);
+        if (drawer.isDrawerOpen(GravityCompat.START)) {
+            drawer.closeDrawer(GravityCompat.START);
+        } else {
+            super.onBackPressed();
+        }
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        getMenuInflater().inflate(R.menu.group_list, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        int id = item.getItemId();
+
+        //noinspection SimplifiableIfStatement
+        if (id == R.id.action_settings) {
+            return true;
+        }
+
+        return super.onOptionsItemSelected(item);
+    }
+
+    @SuppressWarnings("StatementWithEmptyBody")
+    @Override
+    public boolean onNavigationItemSelected(MenuItem item) {
+        // Handle navigation view item clicks here.
+        int id = item.getItemId();
+        if ( id == R.id.createNewGroupButton){
+
+        }
+/*
+        if (id == R.id.nav_home) {
+            // Handle the camera action
+        } else if (id == R.id.nav_gallery) {
+
+        } else if (id == R.id.nav_slideshow) {
+
+        } else if (id == R.id.nav_tools) {
+
+        } else if (id == R.id.nav_share) {
+
+        } else if (id == R.id.nav_send) {
+
+        }
+*/
+        DrawerLayout drawer = findViewById(R.id.drawer_layout);
+        drawer.closeDrawer(GravityCompat.START);
+        return true;
+    }
+}