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.settings.wifi; 18 19 import android.content.BroadcastReceiver; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.content.IntentFilter; 23 import android.net.wifi.WifiInfo; 24 import android.net.wifi.WifiManager; 25 import android.support.v7.preference.Preference; 26 import android.support.v7.preference.PreferenceScreen; 27 import android.text.TextUtils; 28 29 import com.android.settings.R; 30 import com.android.settings.Utils; 31 import com.android.settings.core.PreferenceController; 32 import com.android.settings.core.lifecycle.Lifecycle; 33 import com.android.settings.core.lifecycle.LifecycleObserver; 34 import com.android.settings.core.lifecycle.events.OnPause; 35 import com.android.settings.core.lifecycle.events.OnResume; 36 37 /** 38 * {@link PreferenceController} that updates MAC/IP address. 39 */ 40 public class WifiInfoPreferenceController extends PreferenceController implements 41 LifecycleObserver, OnResume, OnPause { 42 43 private static final String KEY_CURRENT_IP_ADDRESS = "current_ip_address"; 44 private static final String KEY_MAC_ADDRESS = "mac_address"; 45 46 private final IntentFilter mFilter; 47 private final WifiManager mWifiManager; 48 49 private Preference mWifiMacAddressPref; 50 private Preference mWifiIpAddressPref; 51 WifiInfoPreferenceController(Context context, Lifecycle lifecycle, WifiManager wifiManager)52 public WifiInfoPreferenceController(Context context, Lifecycle lifecycle, 53 WifiManager wifiManager) { 54 super(context); 55 mWifiManager = wifiManager; 56 mFilter = new IntentFilter(); 57 mFilter.addAction(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 58 mFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); 59 60 lifecycle.addObserver(this); 61 } 62 63 @Override isAvailable()64 public boolean isAvailable() { 65 return true; 66 } 67 68 @Override getPreferenceKey()69 public String getPreferenceKey() { 70 // Returns null because this controller contains more than 1 preference. 71 return null; 72 } 73 74 @Override displayPreference(PreferenceScreen screen)75 public void displayPreference(PreferenceScreen screen) { 76 super.displayPreference(screen); 77 mWifiMacAddressPref = screen.findPreference(KEY_MAC_ADDRESS); 78 mWifiMacAddressPref.setSelectable(false); 79 mWifiIpAddressPref = screen.findPreference(KEY_CURRENT_IP_ADDRESS); 80 mWifiIpAddressPref.setSelectable(false); 81 } 82 83 @Override onResume()84 public void onResume() { 85 mContext.registerReceiver(mReceiver, mFilter); 86 updateWifiInfo(); 87 } 88 89 @Override onPause()90 public void onPause() { 91 mContext.unregisterReceiver(mReceiver); 92 } 93 updateWifiInfo()94 public void updateWifiInfo() { 95 if (mWifiMacAddressPref != null) { 96 final WifiInfo wifiInfo = mWifiManager.getConnectionInfo(); 97 final String macAddress = wifiInfo == null ? null : wifiInfo.getMacAddress(); 98 mWifiMacAddressPref.setSummary(!TextUtils.isEmpty(macAddress) 99 ? macAddress 100 : mContext.getString(R.string.status_unavailable)); 101 } 102 if (mWifiIpAddressPref != null) { 103 final String ipAddress = Utils.getWifiIpAddresses(mContext); 104 mWifiIpAddressPref.setSummary(ipAddress == null 105 ? mContext.getString(R.string.status_unavailable) 106 : ipAddress); 107 } 108 } 109 110 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 111 @Override 112 public void onReceive(Context context, Intent intent) { 113 String action = intent.getAction(); 114 if (action.equals(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION) || 115 action.equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) { 116 updateWifiInfo(); 117 } 118 } 119 }; 120 } 121