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.app.AlertDialog;
22 import android.os.Bundle;
23 import android.os.SystemProperties;
24 import android.content.BroadcastReceiver;
25 import android.content.Context;
26 import android.content.Intent;
27 import android.content.IntentFilter;
28 import android.net.ConnectivityManager;
29 import android.os.Environment;
30 import android.preference.CheckBoxPreference;
31 import android.preference.Preference;
32 import android.preference.PreferenceActivity;
33 import android.preference.PreferenceScreen;
34 import android.provider.Settings;
35 import android.util.Log;
36 import android.webkit.WebView;
38 import java.util.ArrayList;
39 import java.util.Locale;
42 * Displays preferences for Tethering.
44 public class TetherSettings extends PreferenceActivity {
45 private static final String USB_TETHER_SETTINGS = "usb_tether_settings";
46 private static final String ENABLE_WIFI_AP = "enable_wifi_ap";
47 private static final String WIFI_AP_SETTINGS = "wifi_ap_settings";
48 private static final String TETHERING_HELP = "tethering_help";
49 private static final String USB_HELP_MODIFIER = "usb_";
50 private static final String WIFI_HELP_MODIFIER = "wifi_";
51 private static final String HELP_URL = "file:///android_asset/html/%y_%z/tethering_%xhelp.html";
53 private CheckBoxPreference mUsbTether;
55 private CheckBoxPreference mEnableWifiAp;
56 private PreferenceScreen mWifiApSettings;
57 private WifiApEnabler mWifiApEnabler;
58 private PreferenceScreen mTetherHelp;
60 private BroadcastReceiver mTetherChangeReceiver;
62 private String[] mUsbRegexs;
63 private ArrayList mUsbIfaces;
65 private String[] mWifiRegexs;
68 protected void onCreate(Bundle icicle) {
69 super.onCreate(icicle);
71 addPreferencesFromResource(R.xml.tether_prefs);
73 mEnableWifiAp = (CheckBoxPreference) findPreference(ENABLE_WIFI_AP);
74 mWifiApSettings = (PreferenceScreen) findPreference(WIFI_AP_SETTINGS);
75 mUsbTether = (CheckBoxPreference) findPreference(USB_TETHER_SETTINGS);
76 mTetherHelp = (PreferenceScreen) findPreference(TETHERING_HELP);
78 ConnectivityManager cm =
79 (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
81 mUsbRegexs = cm.getTetherableUsbRegexs();
82 if (mUsbRegexs.length == 0) {
83 getPreferenceScreen().removePreference(mUsbTether);
86 mWifiRegexs = cm.getTetherableWifiRegexs();
87 if (mWifiRegexs.length == 0) {
88 getPreferenceScreen().removePreference(mEnableWifiAp);
89 getPreferenceScreen().removePreference(mWifiApSettings);
91 mWifiApEnabler = new WifiApEnabler(this, mEnableWifiAp);
95 private class TetherChangeReceiver extends BroadcastReceiver {
96 public void onReceive(Context content, Intent intent) {
97 if (intent.getAction().equals(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)) {
98 // TODO - this should understand the interface types
99 ArrayList<String> available = intent.getStringArrayListExtra(
100 ConnectivityManager.EXTRA_AVAILABLE_TETHER);
101 ArrayList<String> active = intent.getStringArrayListExtra(
102 ConnectivityManager.EXTRA_ACTIVE_TETHER);
103 ArrayList<String> errored = intent.getStringArrayListExtra(
104 ConnectivityManager.EXTRA_ERRORED_TETHER);
105 updateState(available.toArray(), active.toArray(), errored.toArray());
106 } else if (intent.getAction().equals(Intent.ACTION_MEDIA_SHARED) ||
107 intent.getAction().equals(Intent.ACTION_MEDIA_UNSHARED)) {
114 protected void onResume() {
117 IntentFilter filter = new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED);
118 mTetherChangeReceiver = new TetherChangeReceiver();
119 Intent intent = registerReceiver(mTetherChangeReceiver, filter);
121 filter = new IntentFilter();
122 filter.addAction(Intent.ACTION_MEDIA_SHARED);
123 filter.addAction(Intent.ACTION_MEDIA_UNSHARED);
124 filter.addDataScheme("file");
125 registerReceiver(mTetherChangeReceiver, filter);
127 if (intent != null) mTetherChangeReceiver.onReceive(this, intent);
128 mWifiApEnabler.resume();
132 protected void onPause() {
134 unregisterReceiver(mTetherChangeReceiver);
135 mTetherChangeReceiver = null;
136 mWifiApEnabler.pause();
139 private void updateState() {
140 ConnectivityManager cm =
141 (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
143 String[] available = cm.getTetherableIfaces();
144 String[] tethered = cm.getTetheredIfaces();
145 String[] errored = cm.getTetheringErroredIfaces();
146 updateState(available, tethered, errored);
149 private void updateState(Object[] available, Object[] tethered,
151 ConnectivityManager cm =
152 (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
153 boolean usbTethered = false;
154 boolean usbAvailable = false;
155 int usbError = ConnectivityManager.TETHER_ERROR_NO_ERROR;
156 boolean usbErrored = false;
157 boolean massStorageActive =
158 Environment.MEDIA_SHARED.equals(Environment.getExternalStorageState());
159 for (Object o : available) {
160 String s = (String)o;
161 for (String regex : mUsbRegexs) {
162 if (s.matches(regex)) {
164 if (usbError == ConnectivityManager.TETHER_ERROR_NO_ERROR) {
165 usbError = cm.getLastTetherError(s);
170 for (Object o : tethered) {
171 String s = (String)o;
172 for (String regex : mUsbRegexs) {
173 if (s.matches(regex)) usbTethered = true;
176 for (Object o: errored) {
177 String s = (String)o;
178 for (String regex : mUsbRegexs) {
179 if (s.matches(regex)) usbErrored = true;
184 mUsbTether.setSummary(R.string.usb_tethering_active_subtext);
185 mUsbTether.setEnabled(true);
186 mUsbTether.setChecked(true);
187 } else if (usbAvailable) {
188 if (usbError == ConnectivityManager.TETHER_ERROR_NO_ERROR) {
189 mUsbTether.setSummary(R.string.usb_tethering_available_subtext);
191 mUsbTether.setSummary(R.string.usb_tethering_errored_subtext);
193 mUsbTether.setEnabled(true);
194 mUsbTether.setChecked(false);
195 } else if (usbErrored) {
196 mUsbTether.setSummary(R.string.usb_tethering_errored_subtext);
197 mUsbTether.setEnabled(false);
198 mUsbTether.setChecked(false);
199 } else if (massStorageActive) {
200 mUsbTether.setSummary(R.string.usb_tethering_storage_active_subtext);
201 mUsbTether.setEnabled(false);
202 mUsbTether.setChecked(false);
204 mUsbTether.setSummary(R.string.usb_tethering_unavailable_subtext);
205 mUsbTether.setEnabled(false);
206 mUsbTether.setChecked(false);
211 public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
212 if (preference == mUsbTether) {
213 boolean newState = mUsbTether.isChecked();
215 ConnectivityManager cm =
216 (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
219 String[] available = cm.getTetherableIfaces();
221 String usbIface = findIface(available, mUsbRegexs);
222 if (usbIface == null) {
226 if (cm.tether(usbIface) != ConnectivityManager.TETHER_ERROR_NO_ERROR) {
227 mUsbTether.setChecked(false);
228 mUsbTether.setSummary(R.string.usb_tethering_errored_subtext);
231 mUsbTether.setSummary("");
233 String [] tethered = cm.getTetheredIfaces();
235 String usbIface = findIface(tethered, mUsbRegexs);
236 if (usbIface == null) {
240 if (cm.untether(usbIface) != ConnectivityManager.TETHER_ERROR_NO_ERROR) {
241 mUsbTether.setSummary(R.string.usb_tethering_errored_subtext);
244 mUsbTether.setSummary("");
246 } else if (preference == mTetherHelp) {
247 Locale locale = Locale.getDefault();
248 String url = HELP_URL.replace("%y", locale.getLanguage().toLowerCase());
249 url = url.replace("%z", locale.getCountry().toLowerCase());
251 if ((mUsbRegexs.length != 0) && (mWifiRegexs.length == 0)) {
252 url = url.replace("%x", USB_HELP_MODIFIER);
253 } else if ((mWifiRegexs.length != 0) && (mUsbRegexs.length == 0)) {
254 url = url.replace("%x", WIFI_HELP_MODIFIER);
256 // could assert that both wifi and usb have regexs, but the default
257 // is to use this anyway so no check is needed
258 url = url.replace("%x", "");
260 WebView view = new WebView(this);
263 AlertDialog.Builder builder = new AlertDialog.Builder(this);
264 builder.setCancelable(true);
265 builder.setTitle(R.string.tethering_help_button_text);
266 builder.setView(view);
272 private String findIface(String[] ifaces, String[] regexes) {
273 for (String iface : ifaces) {
274 for (String regex : regexes) {
275 if (iface.matches(regex)) {