1 /* 2 * Copyright (C) 2011 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.cellbroadcastreceiver; 18 19 import android.content.BroadcastReceiver; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.content.IntentFilter; 23 import android.os.Bundle; 24 import android.telephony.CellBroadcastMessage; 25 26 /** 27 * Custom alert dialog with optional flashing warning icon. 28 * Alert audio and text-to-speech handled by {@link CellBroadcastAlertAudio}. 29 * Keyguard handling based on {@code AlarmAlert} class from DeskClock app. 30 */ 31 public class CellBroadcastAlertDialog extends CellBroadcastAlertFullScreen { 32 33 private BroadcastReceiver mScreenOffReceiver; 34 35 private class ScreenOffReceiver extends BroadcastReceiver { 36 @Override onReceive(Context context, Intent intent)37 public void onReceive(Context context, Intent intent) { 38 handleScreenOff(); 39 } 40 } 41 42 @Override onCreate(Bundle icicle)43 protected void onCreate(Bundle icicle) { 44 super.onCreate(icicle); 45 46 // Listen for the screen turning off so that when the screen comes back 47 // on, the user does not need to unlock the phone to dismiss the alert. 48 CellBroadcastMessage msg = getLatestMessage(); 49 if (msg != null && msg.isEmergencyAlertMessage()) { 50 mScreenOffReceiver = new ScreenOffReceiver(); 51 registerReceiver(mScreenOffReceiver, 52 new IntentFilter(Intent.ACTION_SCREEN_OFF)); 53 } 54 } 55 56 @Override onDestroy()57 public void onDestroy() { 58 super.onDestroy(); 59 if (mScreenOffReceiver != null) { 60 unregisterReceiver(mScreenOffReceiver); 61 } 62 } 63 64 @Override onBackPressed()65 public void onBackPressed() { 66 // stop animating warning icon, stop playing alert sound, mark broadcast as read 67 dismiss(); 68 } 69 70 @Override getLayoutResId()71 protected int getLayoutResId() { 72 return R.layout.cell_broadcast_alert; 73 } 74 handleScreenOff()75 private void handleScreenOff() { 76 // Launch the full screen activity but do not turn the screen on. 77 Intent i = new Intent(this, CellBroadcastAlertFullScreen.class); 78 i.putParcelableArrayListExtra(CellBroadcastMessage.SMS_CB_MESSAGE_EXTRA, mMessageList); 79 i.putExtra(SCREEN_OFF_EXTRA, true); 80 startActivity(i); 81 finish(); 82 } 83 } 84