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 17 package com.android.car; 18 19 import android.content.BroadcastReceiver; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.content.IntentFilter; 23 24 import java.util.concurrent.CopyOnWriteArrayList; 25 import java.util.function.BiConsumer; 26 27 /** 28 * This class allows one to register actions they want executed when the vehicle is being shutdown 29 * or rebooted. 30 * 31 * To use this class instantiate it as part of your long-lived service, and then add actions to it. 32 * Actions receive the Context and Intent that go with the shutdown/reboot action, which allows the 33 * action to differentiate the two cases, should it need to do so. 34 * 35 * The actions will run on the UI thread. 36 */ 37 public class OnShutdownReboot { 38 39 private final Context mContext; 40 41 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 42 @Override 43 public void onReceive(Context context, Intent intent) { 44 for (BiConsumer<Context, Intent> action : mActions) { 45 action.accept(context, intent); 46 } 47 } 48 }; 49 50 private final CopyOnWriteArrayList<BiConsumer<Context, Intent>> mActions = 51 new CopyOnWriteArrayList<>(); 52 OnShutdownReboot(Context context)53 public OnShutdownReboot(Context context) { 54 mContext = context; 55 } 56 57 /** 58 * Initializes all resources and registers the broadcast receiver 59 */ init()60 public void init() { 61 IntentFilter filter = new IntentFilter(); 62 filter.addAction(Intent.ACTION_SHUTDOWN); 63 filter.addAction(Intent.ACTION_REBOOT); 64 mContext.registerReceiver(mReceiver, filter, Context.RECEIVER_NOT_EXPORTED); 65 } 66 67 /** Adds an action to be done at reboot/shutdown. */ addAction(BiConsumer<Context, Intent> action)68 public OnShutdownReboot addAction(BiConsumer<Context, Intent> action) { 69 mActions.add(action); 70 return this; 71 } 72 73 /** Clears all actions. */ clearActions()74 public void clearActions() { 75 mActions.clear(); 76 } 77 78 /** Releases all resources and unregisters the broadcast receiver. */ release()79 public void release() { 80 clearActions(); 81 mContext.unregisterReceiver(mReceiver); 82 } 83 } 84