ActionBar not displaying on my EditFriendsActivity

package com.paveynganpi.snapshare;

import android.app.AlertDialog;
import android.app.ListActivity;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;
import android.widget.ArrayAdapter;

import com.parse.FindCallback;
import com.parse.Parse;
import com.parse.ParseException;
import com.parse.ParseQuery;
import com.parse.ParseUser;

import java.util.List;


public class EditFriendsActivity extends ListActivity {

    private static final String TAG = EditFriendsActivity.class.getSimpleName();
    protected List<ParseUser> mUsers;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setContentView(R.layout.activity_edit_friends);
    }

    //runs each time the activity is running

    @Override
    protected void onResume() {

        setProgressBarIndeterminateVisibility(true);
        super.onResume();
        ParseQuery<ParseUser> query = ParseUser.getQuery();
        query.orderByAscending(ParseConstants.KEY_USERNAME);
        query.setLimit(1000);

        query.findInBackground(new FindCallback<ParseUser>() {
            @Override
            public void done(List<ParseUser> users, ParseException e) {
                setProgressBarIndeterminateVisibility(true);
                if(e == null){
                    //success
                    mUsers=users;
                    String[] usernames = new String[mUsers.size()];
                    int i=0;
                    for(ParseUser user: mUsers){

                        usernames[i] = user.getUsername();
                        i++;

                    }

                    ArrayAdapter<String> adapter = new ArrayAdapter<String>(
                            EditFriendsActivity.this,
                            android.R.layout.simple_list_item_checked,
                            usernames
                    );
                    setListAdapter(adapter);

                }

                else{

                    Log.e(TAG, e.getMessage().toString());
                    AlertDialog.Builder builder = new AlertDialog.Builder(EditFriendsActivity.this);
                    builder.setMessage(e.getMessage());//creates a dialog with this message
                    builder.setTitle(R.string.error_title);
                    builder.setPositiveButton(android.R.string.ok,null);//creates a button to dismiss the dialog

                    AlertDialog dialog = builder.create();//create a dialog
                    dialog.show();//show the dialog

                }

            }
        });

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_edit_friends, 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);
    }
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                xmlns:tools="http://schemas.android.com/tools"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                tools:context="com.paveynganpi.snapshare.EditFriendsActivity">

    <ListView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@android:id/list"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"/>
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.paveynganpi.snapshare" >

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
        android:name=".SnapShareApplication"
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:screenOrientation="portrait" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".LoginActivity"
            android:label="@string/title_activity_login"
            android:screenOrientation="portrait" >
        </activity>
        <activity
            android:name=".SignUpActivity"
            android:label="@string/title_activity_sign_up"
            android:parentActivityName=".LoginActivity"
            android:screenOrientation="portrait" >
        </activity>
        <activity
            android:name=".EditFriendsActivity"
            android:label="@string/title_activity_edit_friends"
            android:screenOrientation="portrait"
            android:parentActivityName=".MainActivity" >
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.paveynganpi.snapshare.MainActivity" />
        </activity>
    </application>

</manifest>