Working drawer, starting the toggle

Author: benjakuben

app/src/main/java/com/teamtreehouse/oslist/MainActivity.java

@@ -1,19 +1,69 @@
 package com.teamtreehouse.oslist;
 
-import android.support.v7.app.ActionBarActivity;
 import android.os.Bundle;
+import android.support.v4.widget.DrawerLayout;
+import android.support.v7.app.ActionBarActivity;
+import android.support.v7.app.ActionBarDrawerToggle;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+import android.widget.Toast;
 
 
 public class MainActivity extends ActionBarActivity {
 
+    private ListView mDrawerList;
+    private DrawerLayout mDrawerLayout;
+    private ArrayAdapter<String> mAdapter;
+    private ActionBarDrawerToggle mDrawerToggle;
+    private String mActivityTitle;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+
+        mDrawerList = (ListView)findViewById(R.id.navList);mDrawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
+        mActivityTitle = getTitle().toString();
+
+        addDrawerItems();
+        setupDrawer();
     }
 
+    private void addDrawerItems() {
+        String[] osArray = { "Android", "iOS", "Windows", "OS X", "Linux" };
+        mAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, osArray);
+        mDrawerList.setAdapter(mAdapter);
+
+        mDrawerList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+                Toast.makeText(MainActivity.this, "Time for an upgrade!", Toast.LENGTH_LONG).show();
+            }
+        });
+    }
+
+    private void setupDrawer() {
+        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.drawer_open, R.string.drawer_close) {
+
+            /** Called when a drawer has settled in a completely open state. */
+            public void onDrawerOpened(View drawerView) {
+                super.onDrawerOpened(drawerView);
+                getSupportActionBar().setTitle("Navigation!");
+                invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
+            }
+
+            /** Called when a drawer has settled in a completely closed state. */
+            public void onDrawerClosed(View view) {
+                super.onDrawerClosed(view);
+                getSupportActionBar().setTitle(mActivityTitle);
+                invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
+            }
+        };
+    }
 
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {