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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;
18 
19 import android.app.Dialog;
20 import android.app.ProgressDialog;
21 import android.content.BroadcastReceiver;
22 import android.content.ContentResolver;
23 import android.content.ContentUris;
24 import android.content.ContentValues;
25 import android.content.Context;
26 import android.content.Intent;
27 import android.content.IntentFilter;
28 import android.database.Cursor;
29 import android.net.Uri;
30 import android.os.Bundle;
31 import android.os.Handler;
32 import android.os.HandlerThread;
33 import android.os.Looper;
34 import android.os.Message;
35 import android.preference.Preference;
36 import android.preference.PreferenceActivity;
37 import android.preference.PreferenceGroup;
38 import android.preference.PreferenceScreen;
39 import android.provider.Telephony;
40 import android.util.Log;
41 import android.view.Menu;
42 import android.view.MenuItem;
43 import android.widget.Toast;
44 
45 import com.android.internal.telephony.Phone;
46 import com.android.internal.telephony.PhoneConstants;
47 import com.android.internal.telephony.TelephonyIntents;
48 import com.android.internal.telephony.TelephonyProperties;
49 
50 import java.util.ArrayList;
51 
52 public class ApnSettings extends PreferenceActivity implements
53         Preference.OnPreferenceChangeListener {
54     static final String TAG = "ApnSettings";
55 
56     public static final String EXTRA_POSITION = "position";
57     public static final String RESTORE_CARRIERS_URI =
58         "content://telephony/carriers/restore";
59     public static final String PREFERRED_APN_URI =
60         "content://telephony/carriers/preferapn";
61 
62     public static final String APN_ID = "apn_id";
63 
64     private static final int ID_INDEX = 0;
65     private static final int NAME_INDEX = 1;
66     private static final int APN_INDEX = 2;
67     private static final int TYPES_INDEX = 3;
68 
69     private static final int MENU_NEW = Menu.FIRST;
70     private static final int MENU_RESTORE = Menu.FIRST + 1;
71 
72     private static final int EVENT_RESTORE_DEFAULTAPN_START = 1;
73     private static final int EVENT_RESTORE_DEFAULTAPN_COMPLETE = 2;
74 
75     private static final int DIALOG_RESTORE_DEFAULTAPN = 1001;
76 
77     private static final Uri DEFAULTAPN_URI = Uri.parse(RESTORE_CARRIERS_URI);
78     private static final Uri PREFERAPN_URI = Uri.parse(PREFERRED_APN_URI);
79 
80     private static boolean mRestoreDefaultApnMode;
81 
82     private RestoreApnUiHandler mRestoreApnUiHandler;
83     private RestoreApnProcessHandler mRestoreApnProcessHandler;
84     private HandlerThread mRestoreDefaultApnThread;
85 
86     private String mSelectedKey;
87 
88     private IntentFilter mMobileStateFilter;
89 
90     private final BroadcastReceiver mMobileStateReceiver = new BroadcastReceiver() {
91         @Override
92         public void onReceive(Context context, Intent intent) {
93             if (intent.getAction().equals(
94                     TelephonyIntents.ACTION_ANY_DATA_CONNECTION_STATE_CHANGED)) {
95                 PhoneConstants.DataState state = getMobileDataState(intent);
96                 switch (state) {
97                 case CONNECTED:
98                     if (!mRestoreDefaultApnMode) {
99                         fillList();
100                     } else {
101                         showDialog(DIALOG_RESTORE_DEFAULTAPN);
102                     }
103                     break;
104                 }
105             }
106         }
107     };
108 
getMobileDataState(Intent intent)109     private static PhoneConstants.DataState getMobileDataState(Intent intent) {
110         String str = intent.getStringExtra(PhoneConstants.STATE_KEY);
111         if (str != null) {
112             return Enum.valueOf(PhoneConstants.DataState.class, str);
113         } else {
114             return PhoneConstants.DataState.DISCONNECTED;
115         }
116     }
117 
118     @Override
onCreate(Bundle icicle)119     protected void onCreate(Bundle icicle) {
120         super.onCreate(icicle);
121 
122         addPreferencesFromResource(R.xml.apn_settings);
123         getListView().setItemsCanFocus(true);
124 
125         mMobileStateFilter = new IntentFilter(
126                 TelephonyIntents.ACTION_ANY_DATA_CONNECTION_STATE_CHANGED);
127     }
128 
129     @Override
onResume()130     protected void onResume() {
131         super.onResume();
132 
133         registerReceiver(mMobileStateReceiver, mMobileStateFilter);
134 
135         if (!mRestoreDefaultApnMode) {
136             fillList();
137         } else {
138             showDialog(DIALOG_RESTORE_DEFAULTAPN);
139         }
140     }
141 
142     @Override
onPause()143     protected void onPause() {
144         super.onPause();
145 
146         unregisterReceiver(mMobileStateReceiver);
147     }
148 
149     @Override
onDestroy()150     protected void onDestroy() {
151         super.onDestroy();
152 
153         if (mRestoreDefaultApnThread != null) {
154             mRestoreDefaultApnThread.quit();
155         }
156     }
157 
fillList()158     private void fillList() {
159         String where = "numeric=\""
160             + android.os.SystemProperties.get(TelephonyProperties.PROPERTY_ICC_OPERATOR_NUMERIC, "")
161             + "\"";
162 
163         Cursor cursor = getContentResolver().query(Telephony.Carriers.CONTENT_URI, new String[] {
164                 "_id", "name", "apn", "type"}, where, null,
165                 Telephony.Carriers.DEFAULT_SORT_ORDER);
166 
167         PreferenceGroup apnList = (PreferenceGroup) findPreference("apn_list");
168         apnList.removeAll();
169 
170         ArrayList<Preference> mmsApnList = new ArrayList<Preference>();
171 
172         mSelectedKey = getSelectedApnKey();
173         cursor.moveToFirst();
174         while (!cursor.isAfterLast()) {
175             String name = cursor.getString(NAME_INDEX);
176             String apn = cursor.getString(APN_INDEX);
177             String key = cursor.getString(ID_INDEX);
178             String type = cursor.getString(TYPES_INDEX);
179 
180             ApnPreference pref = new ApnPreference(this);
181 
182             pref.setKey(key);
183             pref.setTitle(name);
184             pref.setSummary(apn);
185             pref.setPersistent(false);
186             pref.setOnPreferenceChangeListener(this);
187 
188             boolean selectable = ((type == null) || !type.equals("mms"));
189             pref.setSelectable(selectable);
190             if (selectable) {
191                 if ((mSelectedKey != null) && mSelectedKey.equals(key)) {
192                     pref.setChecked();
193                 }
194                 apnList.addPreference(pref);
195             } else {
196                 mmsApnList.add(pref);
197             }
198             cursor.moveToNext();
199         }
200         cursor.close();
201 
202         for (Preference preference : mmsApnList) {
203             apnList.addPreference(preference);
204         }
205     }
206 
207     @Override
onCreateOptionsMenu(Menu menu)208     public boolean onCreateOptionsMenu(Menu menu) {
209         super.onCreateOptionsMenu(menu);
210         menu.add(0, MENU_NEW, 0,
211                 getResources().getString(R.string.menu_new))
212                 .setIcon(android.R.drawable.ic_menu_add);
213         menu.add(0, MENU_RESTORE, 0,
214                 getResources().getString(R.string.menu_restore))
215                 .setIcon(android.R.drawable.ic_menu_upload);
216         return true;
217     }
218 
219     @Override
onOptionsItemSelected(MenuItem item)220     public boolean onOptionsItemSelected(MenuItem item) {
221         switch (item.getItemId()) {
222         case MENU_NEW:
223             addNewApn();
224             return true;
225 
226         case MENU_RESTORE:
227             restoreDefaultApn();
228             return true;
229         }
230         return super.onOptionsItemSelected(item);
231     }
232 
addNewApn()233     private void addNewApn() {
234         startActivity(new Intent(Intent.ACTION_INSERT, Telephony.Carriers.CONTENT_URI));
235     }
236 
237     @Override
onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference)238     public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
239         int pos = Integer.parseInt(preference.getKey());
240         Uri url = ContentUris.withAppendedId(Telephony.Carriers.CONTENT_URI, pos);
241         startActivity(new Intent(Intent.ACTION_EDIT, url));
242         return true;
243     }
244 
onPreferenceChange(Preference preference, Object newValue)245     public boolean onPreferenceChange(Preference preference, Object newValue) {
246         Log.d(TAG, "onPreferenceChange(): Preference - " + preference
247                 + ", newValue - " + newValue + ", newValue type - "
248                 + newValue.getClass());
249         if (newValue instanceof String) {
250             setSelectedApnKey((String) newValue);
251         }
252 
253         return true;
254     }
255 
setSelectedApnKey(String key)256     private void setSelectedApnKey(String key) {
257         mSelectedKey = key;
258         ContentResolver resolver = getContentResolver();
259 
260         ContentValues values = new ContentValues();
261         values.put(APN_ID, mSelectedKey);
262         resolver.update(PREFERAPN_URI, values, null, null);
263     }
264 
getSelectedApnKey()265     private String getSelectedApnKey() {
266         String key = null;
267 
268         Cursor cursor = getContentResolver().query(PREFERAPN_URI, new String[] {"_id"},
269                 null, null, Telephony.Carriers.DEFAULT_SORT_ORDER);
270         if (cursor.getCount() > 0) {
271             cursor.moveToFirst();
272             key = cursor.getString(ID_INDEX);
273         }
274         cursor.close();
275         return key;
276     }
277 
restoreDefaultApn()278     private boolean restoreDefaultApn() {
279         showDialog(DIALOG_RESTORE_DEFAULTAPN);
280         mRestoreDefaultApnMode = true;
281 
282         if (mRestoreApnUiHandler == null) {
283             mRestoreApnUiHandler = new RestoreApnUiHandler();
284         }
285 
286         if (mRestoreApnProcessHandler == null ||
287             mRestoreDefaultApnThread == null) {
288             mRestoreDefaultApnThread = new HandlerThread(
289                     "Restore default APN Handler: Process Thread");
290             mRestoreDefaultApnThread.start();
291             mRestoreApnProcessHandler = new RestoreApnProcessHandler(
292                     mRestoreDefaultApnThread.getLooper(), mRestoreApnUiHandler);
293         }
294 
295         mRestoreApnProcessHandler
296                 .sendEmptyMessage(EVENT_RESTORE_DEFAULTAPN_START);
297         return true;
298     }
299 
300     private class RestoreApnUiHandler extends Handler {
301         @Override
handleMessage(Message msg)302         public void handleMessage(Message msg) {
303             switch (msg.what) {
304                 case EVENT_RESTORE_DEFAULTAPN_COMPLETE:
305                     fillList();
306                     getPreferenceScreen().setEnabled(true);
307                     mRestoreDefaultApnMode = false;
308                     dismissDialog(DIALOG_RESTORE_DEFAULTAPN);
309                     Toast.makeText(
310                         ApnSettings.this,
311                         getResources().getString(
312                                 R.string.restore_default_apn_completed),
313                         Toast.LENGTH_LONG).show();
314                     break;
315             }
316         }
317     }
318 
319     private class RestoreApnProcessHandler extends Handler {
320         private Handler mRestoreApnUiHandler;
321 
RestoreApnProcessHandler(Looper looper, Handler restoreApnUiHandler)322         public RestoreApnProcessHandler(Looper looper, Handler restoreApnUiHandler) {
323             super(looper);
324             this.mRestoreApnUiHandler = restoreApnUiHandler;
325         }
326 
327         @Override
handleMessage(Message msg)328         public void handleMessage(Message msg) {
329             switch (msg.what) {
330                 case EVENT_RESTORE_DEFAULTAPN_START:
331                     ContentResolver resolver = getContentResolver();
332                     resolver.delete(DEFAULTAPN_URI, null, null);
333                     mRestoreApnUiHandler
334                         .sendEmptyMessage(EVENT_RESTORE_DEFAULTAPN_COMPLETE);
335                     break;
336             }
337         }
338     }
339 
340     @Override
onCreateDialog(int id)341     protected Dialog onCreateDialog(int id) {
342         if (id == DIALOG_RESTORE_DEFAULTAPN) {
343             ProgressDialog dialog = new ProgressDialog(this);
344             dialog.setMessage(getResources().getString(R.string.restore_default_apn));
345             dialog.setCancelable(false);
346             return dialog;
347         }
348         return null;
349     }
350 
351     @Override
onPrepareDialog(int id, Dialog dialog)352     protected void onPrepareDialog(int id, Dialog dialog) {
353         if (id == DIALOG_RESTORE_DEFAULTAPN) {
354             getPreferenceScreen().setEnabled(false);
355         }
356     }
357 }
358