title: ANDROID: Cannot resolve method getSupportActionBar()
body: <p>This thing is driving me nuts. I can't seem to get my app to compile correctly. I have added the support libraries in my app by copying the jar files, dropping them into libs folder, right click and adding them as library.</p>
  
  <p>I have tried extending ActionBaractivity and nothing still not getting that method recognized. </p>
  
  <p>I am using Android studio version 0.8.2. </p>
  
  <p><strong>Class</strong></p>
  
  <pre><code>import android.app.Activity;
  import android.os.Bundle;
  import android.support.v4.widget.DrawerLayout;
  import android.view.Menu;
  import android.support.v7.app.ActionBar;
  import android.support.v7.app.ActionBarActivity;
  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 Activity implements AdapterView.OnItemClickListener {
  
      private DrawerLayout drawerLayout;
      private ListView listView;
      private String[] navMenuArray;
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          drawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
          navMenuArray = getResources().getStringArray(R.array.navmenu);
          listView =(ListView) findViewById(R.id.drawerList);
          listView.setAdapter(new ArrayAdapter&lt;&gt;(this, android.R.layout.simple_expandable_list_item_1, navMenuArray));
          listView.setOnItemClickListener(this);
      }
  
      @Override
      public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) {
          //handles what happens when an item in the menu is clicked
          Toast.makeText(this,navMenuArray[position]+" was selected", Toast.LENGTH_SHORT).show();
          selectItem(position);
      }
      public void selectItem(int position){
          listView.setItemChecked(position, true);
          setTitle(navMenuArray[position]);
      }
      public void setTitle(String title){
          getSupportActionbar().setTitle(title);
      }
  }
  </code></pre>
  
  <p><strong>MANIFEST</strong></p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.myapp" &gt;
  
      &lt;application
          android:allowBackup="true"
          android:icon="@drawable/ic_launcher"
          android:label="@string/app_name"
          android:theme="@style/Theme.AppCompat" &gt;
          &lt;activity
              android:name=".mainActivity"
              android:label="@string/app_name" &gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.MAIN" /&gt;
  
                  &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
              &lt;/intent-filter&gt;
          &lt;/activity&gt;
      &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>
  
  <p><strong>build.gradle</strong></p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 20
      buildToolsVersion '20.0.0'
  
      defaultConfig {
          applicationId "com.myapp"
          minSdkVersion 14
          targetSdkVersion 20
          versionCode 1
          versionName "1.0"
      }
      compileOptions{
          sourceCompatibility JavaVersion.VERSION_1_7
          targetCompatibility JavaVersion.VERSION_1_7
      }
  
      buildTypes {
          release {
              runProguard false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  }
  
      dependencies {
          compile fileTree(dir: 'libs', include: ['*.jar'])
          compile 'com.android.support:support-v4:18.0.+'
          compile 'com.android.support:appcompat-v7:18.0.+'
      }
  </code></pre>