2 * Copyright (C) 2008 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.android.settings;
19 import com.android.settings.wifi.WifiApEnabler;
21 import android.os.Bundle;
22 import android.os.SystemProperties;
23 import android.content.BroadcastReceiver;
24 import android.content.Context;
25 import android.content.Intent;
26 import android.content.IntentFilter;
27 import android.net.ConnectivityManager;
28 import android.os.Environment;
29 import android.preference.CheckBoxPreference;
30 import android.preference.Preference;
31 import android.preference.PreferenceActivity;
32 import android.preference.PreferenceScreen;
33 import android.provider.Settings;
34 import android.util.Log;
36 import java.util.ArrayList;
39 * Displays preferences for Tethering.
41 public class TetherSettings extends PreferenceActivity {
42 private static final String USB_TETHER_SETTINGS = "usb_tether_settings";
43 private static final String ENABLE_WIFI_AP = "enable_wifi_ap";
44 private static final String WIFI_AP_SETTINGS = "wifi_ap_settings";
46 private CheckBoxPreference mUsbTether;
48 private CheckBoxPreference mEnableWifiAp;
49 private PreferenceScreen mWifiApSettings;
50 private WifiApEnabler mWifiApEnabler;
52 private BroadcastReceiver mTetherChangeReceiver;
54 private String[] mUsbRegexs;
55 private ArrayList mUsbIfaces;
57 private String[] mWifiRegexs;
58 private ArrayList mWifiIfaces;
61 protected void onCreate(Bundle icicle) {
62 super.onCreate(icicle);
64 addPreferencesFromResource(R.xml.tether_prefs);
66 mEnableWifiAp = (CheckBoxPreference) findPreference(ENABLE_WIFI_AP);
67 mWifiApSettings = (PreferenceScreen) findPreference(WIFI_AP_SETTINGS);
68 mUsbTether = (CheckBoxPreference) findPreference(USB_TETHER_SETTINGS);
70 ConnectivityManager cm =
71 (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
72 mUsbRegexs = cm.getTetherableUsbRegexs();
73 if (mUsbRegexs.length == 0) {
74 getPreferenceScreen().removePreference(mUsbTether);
77 mWifiRegexs = cm.getTetherableWifiRegexs();
78 if (mWifiRegexs.length == 0) {
79 getPreferenceScreen().removePreference(mEnableWifiAp);
80 getPreferenceScreen().removePreference(mWifiApSettings);
82 mWifiApEnabler = new WifiApEnabler(this, mEnableWifiAp);
86 private class TetherChangeReceiver extends BroadcastReceiver {
87 public void onReceive(Context content, Intent intent) {
88 if (intent.getAction().equals(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)) {
89 // TODO - this should understand the interface types
90 ArrayList<String> available = intent.getStringArrayListExtra(
91 ConnectivityManager.EXTRA_AVAILABLE_TETHER);
92 ArrayList<String> active = intent.getStringArrayListExtra(
93 ConnectivityManager.EXTRA_ACTIVE_TETHER);
94 ArrayList<String> errored = intent.getStringArrayListExtra(
95 ConnectivityManager.EXTRA_ERRORED_TETHER);
96 updateState(available.toArray(), active.toArray(), errored.toArray());
97 } else if (intent.getAction().equals(Intent.ACTION_MEDIA_SHARED) ||
98 intent.getAction().equals(Intent.ACTION_MEDIA_UNSHARED)) {
105 protected void onResume() {
108 IntentFilter filter = new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED);
109 filter.addAction(Intent.ACTION_MEDIA_SHARED);
110 filter.addAction(Intent.ACTION_MEDIA_UNSHARED);
111 mTetherChangeReceiver = new TetherChangeReceiver();
112 Intent intent = registerReceiver(mTetherChangeReceiver, filter);
114 if (intent != null) mTetherChangeReceiver.onReceive(this, intent);
115 mWifiApEnabler.resume();
119 protected void onPause() {
121 unregisterReceiver(mTetherChangeReceiver);
122 mTetherChangeReceiver = null;
123 mWifiApEnabler.pause();
126 private void updateState() {
127 ConnectivityManager cm =
128 (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
130 String[] available = cm.getTetherableIfaces();
131 String[] tethered = cm.getTetheredIfaces();
132 String[] errored = cm.getTetheringErroredIfaces();
133 updateState(available, tethered, errored);
136 private void updateState(Object[] available, Object[] tethered,
138 ConnectivityManager cm =
139 (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
140 boolean usbTethered = false;
141 boolean usbAvailable = false;
142 int usbError = ConnectivityManager.TETHER_ERROR_NO_ERROR;
143 boolean usbErrored = false;
144 boolean wifiTethered = false;
145 boolean wifiAvailable = false;
146 int wifiError = ConnectivityManager.TETHER_ERROR_NO_ERROR;
147 boolean massStorageActive =
148 Environment.MEDIA_SHARED.equals(Environment.getExternalStorageState());
149 boolean wifiErrored = false;
150 for (Object o : available) {
151 String s = (String)o;
152 for (String regex : mUsbRegexs) {
153 if (s.matches(regex)) {
155 if (usbError == ConnectivityManager.TETHER_ERROR_NO_ERROR) {
156 usbError = cm.getLastTetherError(s);
160 for (String regex : mWifiRegexs) {
161 if (s.matches(regex)) {
162 wifiAvailable = true;
163 if (wifiError == ConnectivityManager.TETHER_ERROR_NO_ERROR) {
164 wifiError = cm.getLastTetherError(s);
169 for (Object o : tethered) {
170 String s = (String)o;
171 for (String regex : mUsbRegexs) {
172 if (s.matches(regex)) usbTethered = true;
174 for (String regex : mWifiRegexs) {
175 if (s.matches(regex)) wifiTethered = true;
178 for (Object o: errored) {
179 String s = (String)o;
180 for (String regex : mUsbRegexs) {
181 if (s.matches(regex)) usbErrored = true;
183 for (String regex : mWifiRegexs) {
184 if (s.matches(regex)) wifiErrored = true;
189 mUsbTether.setSummary(R.string.usb_tethering_active_subtext);
190 mUsbTether.setEnabled(true);
191 mUsbTether.setChecked(true);
192 } else if (usbAvailable) {
193 if (usbError == ConnectivityManager.TETHER_ERROR_NO_ERROR) {
194 mUsbTether.setSummary(R.string.usb_tethering_available_subtext);
196 mUsbTether.setSummary(R.string.usb_tethering_errored_subtext);
198 mUsbTether.setEnabled(true);
199 mUsbTether.setChecked(false);
200 } else if (usbErrored) {
201 mUsbTether.setSummary(R.string.usb_tethering_errored_subtext);
202 mUsbTether.setEnabled(false);
203 mUsbTether.setChecked(false);
204 } else if (massStorageActive) {
205 mUsbTether.setSummary(R.string.usb_tethering_storage_active_subtext);
206 mUsbTether.setEnabled(false);
207 mUsbTether.setChecked(false);
209 mUsbTether.setSummary(R.string.usb_tethering_unavailable_subtext);
210 mUsbTether.setEnabled(false);
211 mUsbTether.setChecked(false);
216 public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
217 if (preference == mUsbTether) {
218 boolean newState = mUsbTether.isChecked();
220 ConnectivityManager cm =
221 (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
224 String[] available = cm.getTetherableIfaces();
226 String usbIface = findIface(available, mUsbRegexs);
227 if (usbIface == null) {
231 if (cm.tether(usbIface) != ConnectivityManager.TETHER_ERROR_NO_ERROR) {
232 mUsbTether.setChecked(false);
233 mUsbTether.setSummary(R.string.usb_tethering_errored_subtext);
236 mUsbTether.setSummary("");
238 String [] tethered = cm.getTetheredIfaces();
240 String usbIface = findIface(tethered, mUsbRegexs);
241 if (usbIface == null) {
245 if (cm.untether(usbIface) != ConnectivityManager.TETHER_ERROR_NO_ERROR) {
246 mUsbTether.setSummary(R.string.usb_tethering_errored_subtext);
249 mUsbTether.setSummary("");
255 private String findIface(String[] ifaces, String[] regexes) {
256 for (String iface : ifaces) {
257 for (String regex : regexes) {
258 if (iface.matches(regex)) {