src/com/android/car/settings/common/CarSettingActivity.java

/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License
 */
package com.android.car.settings.common;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.view.MenuItem;


/**
 * Base activity class for car settings, provides a action bar with a back button that goes to
 * previous activity.
 */
public class CarSettingActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setupActionBar();
    }

    /**
     * Add logic to setup ActionBar here.
     */
    public void setupActionBar() {
        getActionBar().setDisplayHomeAsUpEnabled(true);
    }

    /**
     * Make home button as back button.
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == android.R.id.home) {
                onBackPressed();
                return true;
        }
        return super.onOptionsItemSelected(item);
    }
}