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      1 /*
      2  * Copyright (C) 2008 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.settings.bluetooth;
     18 
     19 import com.android.settings.R;
     20 
     21 import android.app.Notification;
     22 import android.app.NotificationManager;
     23 import android.app.PendingIntent;
     24 import android.bluetooth.BluetoothDevice;
     25 import android.content.BroadcastReceiver;
     26 import android.content.Context;
     27 import android.content.Intent;
     28 import android.content.res.Resources;
     29 import android.text.TextUtils;
     30 import android.os.PowerManager;
     31 
     32 /**
     33  * BluetoothPairingRequest is a receiver for any Bluetooth pairing request. It
     34  * checks if the Bluetooth Settings is currently visible and brings up the PIN, the passkey or a
     35  * confirmation entry dialog. Otherwise it puts a Notification in the status bar, which can
     36  * be clicked to bring up the Pairing entry dialog.
     37  */
     38 public final class BluetoothPairingRequest extends BroadcastReceiver {
     39 
     40     private static final int NOTIFICATION_ID = android.R.drawable.stat_sys_data_bluetooth;
     41 
     42     @Override
     43     public void onReceive(Context context, Intent intent) {
     44         String action = intent.getAction();
     45         if (action.equals(BluetoothDevice.ACTION_PAIRING_REQUEST)) {
     46             // convert broadcast intent into activity intent (same action string)
     47             BluetoothDevice device =
     48                     intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
     49             int type = intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT,
     50                     BluetoothDevice.ERROR);
     51             Intent pairingIntent = new Intent();
     52             pairingIntent.setClass(context, BluetoothPairingDialog.class);
     53             pairingIntent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
     54             pairingIntent.putExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, type);
     55             if (type == BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION ||
     56                     type == BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY ||
     57                     type == BluetoothDevice.PAIRING_VARIANT_DISPLAY_PIN) {
     58                 int pairingKey = intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_KEY,
     59                         BluetoothDevice.ERROR);
     60                 pairingIntent.putExtra(BluetoothDevice.EXTRA_PAIRING_KEY, pairingKey);
     61             }
     62             pairingIntent.setAction(BluetoothDevice.ACTION_PAIRING_REQUEST);
     63             pairingIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
     64 
     65             PowerManager powerManager =
     66                     (PowerManager)context.getSystemService(Context.POWER_SERVICE);
     67             String deviceAddress = device != null ? device.getAddress() : null;
     68             if (powerManager.isScreenOn() &&
     69                     LocalBluetoothPreferences.shouldShowDialogInForeground(context, deviceAddress)) {
     70                 // Since the screen is on and the BT-related activity is in the foreground,
     71                 // just open the dialog
     72                 context.startActivity(pairingIntent);
     73             } else {
     74                 // Put up a notification that leads to the dialog
     75                 Resources res = context.getResources();
     76                 Notification.Builder builder = new Notification.Builder(context)
     77                         .setSmallIcon(android.R.drawable.stat_sys_data_bluetooth)
     78                         .setTicker(res.getString(R.string.bluetooth_notif_ticker));
     79 
     80                 PendingIntent pending = PendingIntent.getActivity(context, 0,
     81                         pairingIntent, PendingIntent.FLAG_ONE_SHOT);
     82 
     83                 String name = intent.getStringExtra(BluetoothDevice.EXTRA_NAME);
     84                 if (TextUtils.isEmpty(name)) {
     85                     name = device != null ? device.getAliasName() :
     86                             context.getString(android.R.string.unknownName);
     87                 }
     88 
     89                 builder.setContentTitle(res.getString(R.string.bluetooth_notif_title))
     90                         .setContentText(res.getString(R.string.bluetooth_notif_message, name))
     91                         .setContentIntent(pending)
     92                         .setAutoCancel(true)
     93                         .setDefaults(Notification.DEFAULT_SOUND)
     94                         .setColor(res.getColor(
     95                                 com.android.internal.R.color.system_notification_accent_color));
     96 
     97                 NotificationManager manager = (NotificationManager)
     98                         context.getSystemService(Context.NOTIFICATION_SERVICE);
     99                 manager.notify(NOTIFICATION_ID, builder.getNotification());
    100             }
    101 
    102         } else if (action.equals(BluetoothDevice.ACTION_PAIRING_CANCEL)) {
    103 
    104             // Remove the notification
    105             NotificationManager manager = (NotificationManager) context
    106                     .getSystemService(Context.NOTIFICATION_SERVICE);
    107             manager.cancel(NOTIFICATION_ID);
    108 
    109         } else if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)) {
    110             int bondState = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE,
    111                     BluetoothDevice.ERROR);
    112             int oldState = intent.getIntExtra(BluetoothDevice.EXTRA_PREVIOUS_BOND_STATE,
    113                     BluetoothDevice.ERROR);
    114             if((oldState == BluetoothDevice.BOND_BONDING) &&
    115                     (bondState == BluetoothDevice.BOND_NONE)) {
    116                 // Remove the notification
    117                 NotificationManager manager = (NotificationManager) context
    118                     .getSystemService(Context.NOTIFICATION_SERVICE);
    119                 manager.cancel(NOTIFICATION_ID);
    120             }
    121         }
    122     }
    123 }
    124