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      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.example.android.wifidirectp2p;
     18 
     19 import android.content.BroadcastReceiver;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.net.NetworkInfo;
     23 import android.net.wifi.p2p.WifiP2pDevice;
     24 import android.net.wifi.p2p.WifiP2pManager;
     25 import android.net.wifi.p2p.WifiP2pManager.Channel;
     26 import android.net.wifi.p2p.WifiP2pManager.PeerListListener;
     27 import android.util.Log;
     28 
     29 /**
     30  * A BroadcastReceiver that notifies of important wifi p2p events.
     31  */
     32 public class WiFiDirectBroadcastReceiver extends BroadcastReceiver {
     33 
     34     private WifiP2pManager manager;
     35     private Channel channel;
     36     private MainActivity activity;
     37 
     38     /**
     39      * @param manager  WifiP2pManager system service
     40      * @param channel  Wifi p2p channel
     41      * @param activity activity associated with the receiver
     42      */
     43     public WiFiDirectBroadcastReceiver(WifiP2pManager manager, Channel channel,
     44                                        MainActivity activity) {
     45         super();
     46         this.manager = manager;
     47         this.channel = channel;
     48         this.activity = activity;
     49     }
     50 
     51     /*
     52      * (non-Javadoc)
     53      * @see android.content.BroadcastReceiver#onReceive(android.content.Context,
     54      * android.content.Intent)
     55      */
     56     @Override
     57     public void onReceive(Context context, Intent intent) {
     58         String action = intent.getAction();
     59         if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
     60 
     61             // UI update to indicate wifi p2p status.
     62             int state = intent.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE, -1);
     63             if (state == WifiP2pManager.WIFI_P2P_STATE_ENABLED) {
     64                 // Wifi Direct mode is enabled
     65                 activity.setIsWifiP2pEnabled(true);
     66             } else {
     67                 activity.setIsWifiP2pEnabled(false);
     68                 activity.resetData();
     69 
     70             }
     71             Log.d(MainActivity.TAG, "P2P state changed - " + state);
     72         } else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {
     73 
     74             // request available peers from the wifi p2p manager. This is an
     75             // asynchronous call and the calling activity is notified with a
     76             // callback on PeerListListener.onPeersAvailable()
     77             if (manager != null) {
     78                 manager.requestPeers(channel, (PeerListListener) activity.getFragmentManager()
     79                         .findFragmentById(R.id.frag_list));
     80             }
     81             Log.d(MainActivity.TAG, "P2P peers changed");
     82         } else if (WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION.equals(action)) {
     83 
     84             if (manager == null) {
     85                 return;
     86             }
     87 
     88             NetworkInfo networkInfo = (NetworkInfo) intent
     89                     .getParcelableExtra(WifiP2pManager.EXTRA_NETWORK_INFO);
     90 
     91             if (networkInfo.isConnected()) {
     92 
     93                 // we are connected with the other device, request connection
     94                 // info to find group owner IP
     95 
     96                 DeviceDetailFragment fragment = (DeviceDetailFragment) activity
     97                         .getFragmentManager().findFragmentById(R.id.frag_detail);
     98                 manager.requestConnectionInfo(channel, fragment);
     99             } else {
    100                 // It's a disconnect
    101                 activity.resetData();
    102             }
    103         } else if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) {
    104             DeviceListFragment fragment = (DeviceListFragment) activity.getFragmentManager()
    105                     .findFragmentById(R.id.frag_list);
    106             fragment.updateThisDevice((WifiP2pDevice) intent.getParcelableExtra(
    107                     WifiP2pManager.EXTRA_WIFI_P2P_DEVICE));
    108 
    109         }
    110     }
    111 }
    112