1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 package com.android.car.settings.common; 17 18 import android.app.Activity; 19 import android.os.Bundle; 20 import android.support.v4.app.NavUtils; 21 import android.view.MenuItem; 22 23 24 /** 25 * Base activity class for car settings, provides a action bar with a back button that goes to 26 * previous activity. 27 */ 28 public class CarSettingActivity extends Activity { 29 30 @Override onCreate(Bundle savedInstanceState)31 protected void onCreate(Bundle savedInstanceState) { 32 super.onCreate(savedInstanceState); 33 setupActionBar(); 34 } 35 36 /** 37 * Add logic to setup ActionBar here. 38 */ setupActionBar()39 public void setupActionBar() { 40 getActionBar().setDisplayHomeAsUpEnabled(true); 41 } 42 43 /** 44 * Make home button as back button. 45 */ 46 @Override onOptionsItemSelected(MenuItem item)47 public boolean onOptionsItemSelected(MenuItem item) { 48 if (item.getItemId() == android.R.id.home) { 49 onBackPressed(); 50 return true; 51 } 52 return super.onOptionsItemSelected(item); 53 } 54 } 55