SettingsActivity.java

package org.nightscout.lasso.settings;

import android.os.Bundle;
import android.preference.PreferenceFragment;
import android.support.v4.app.NavUtils;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.MenuItem;

import org.nightscout.lasso.R;

public class SettingsActivity extends AppCompatActivity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.d("SettingsActivity", "Creating Activity");
        getFragmentManager().beginTransaction()
                .replace(android.R.id.content, new SettingsFragment())
                .commit();
        if (getSupportActionBar() != null) {
            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == R.id.home) {
            NavUtils.navigateUpFromSameTask(this);
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    public static class SettingsFragment extends PreferenceFragment {

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.preferences);
            Log.d("SettingsFragment", "Creating Fragment");
        }
    }

}