SettingsActivity.java

package com.example.agathe.tsgtest;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.PreferenceManager;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.widget.Toast;

import com.example.agathe.tsgtest.carpooling.GeolocationService;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by agathe on 29/01/17.
 */

public class SettingsActivity extends AppCompatActivity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.pref_layout);

        Toolbar myToolbar = (Toolbar) findViewById(R.id.toolbar_preferences);
        setSupportActionBar(myToolbar);

        // Get a support ActionBar corresponding to this toolbar
        ActionBar ab = getSupportActionBar();
        ab.setDisplayHomeAsUpEnabled(true);

        getFragmentManager().beginTransaction().replace(R.id.content_frame, new SettingsFragment()).commit();
    }
}