Home | History | Annotate | Download | only in settings
      1 /**
      2  * Copyright (C) 2014 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.phone.settings;
     18 
     19 import android.app.Dialog;
     20 import android.content.DialogInterface;
     21 import android.content.Intent;
     22 import android.database.Cursor;
     23 import android.os.AsyncResult;
     24 import android.os.Bundle;
     25 import android.os.Handler;
     26 import android.os.Message;
     27 import android.preference.CheckBoxPreference;
     28 import android.preference.Preference;
     29 import android.preference.PreferenceActivity;
     30 import android.preference.PreferenceScreen;
     31 import android.preference.SwitchPreference;
     32 import android.provider.ContactsContract.CommonDataKinds;
     33 import android.telephony.TelephonyManager;
     34 import android.text.BidiFormatter;
     35 import android.text.TextDirectionHeuristics;
     36 import android.text.TextUtils;
     37 import android.util.Log;
     38 import android.view.MenuItem;
     39 import android.widget.ListAdapter;
     40 
     41 import com.android.internal.telephony.CallForwardInfo;
     42 import com.android.internal.telephony.Phone;
     43 import com.android.internal.telephony.PhoneConstants;
     44 import com.android.phone.R;
     45 import com.android.phone.EditPhoneNumberPreference;
     46 import com.android.phone.PhoneGlobals;
     47 import com.android.phone.PhoneUtils;
     48 import com.android.phone.SubscriptionInfoHelper;
     49 import com.android.phone.vvm.omtp.OmtpVvmCarrierConfigHelper;
     50 import com.android.phone.vvm.omtp.sync.OmtpVvmSourceManager;
     51 
     52 import java.util.Collection;
     53 import java.util.HashMap;
     54 import java.util.HashSet;
     55 import java.util.Iterator;
     56 import java.util.Map;
     57 
     58 public class VoicemailSettingsActivity extends PreferenceActivity
     59         implements DialogInterface.OnClickListener,
     60                 Preference.OnPreferenceChangeListener,
     61                 EditPhoneNumberPreference.OnDialogClosedListener,
     62                 EditPhoneNumberPreference.GetDefaultNumberListener {
     63     private static final String LOG_TAG = VoicemailSettingsActivity.class.getSimpleName();
     64     private static final boolean DBG = (PhoneGlobals.DBG_LEVEL >= 2);
     65 
     66     /**
     67      * Intent action to bring up Voicemail Provider settings
     68      * DO NOT RENAME. There are existing apps which use this intent value.
     69      */
     70     public static final String ACTION_ADD_VOICEMAIL =
     71             "com.android.phone.CallFeaturesSetting.ADD_VOICEMAIL";
     72 
     73     /**
     74      * Intent action to bring up the {@code VoicemailSettingsActivity}.
     75      * DO NOT RENAME. There are existing apps which use this intent value.
     76      */
     77     public static final String ACTION_CONFIGURE_VOICEMAIL =
     78             "com.android.phone.CallFeaturesSetting.CONFIGURE_VOICEMAIL";
     79 
     80     // Extra put in the return from VM provider config containing voicemail number to set
     81     public static final String VM_NUMBER_EXTRA = "com.android.phone.VoicemailNumber";
     82     // Extra put in the return from VM provider config containing call forwarding number to set
     83     public static final String FWD_NUMBER_EXTRA = "com.android.phone.ForwardingNumber";
     84     // Extra put in the return from VM provider config containing call forwarding number to set
     85     public static final String FWD_NUMBER_TIME_EXTRA = "com.android.phone.ForwardingNumberTime";
     86     // If the VM provider returns non null value in this extra we will force the user to
     87     // choose another VM provider
     88     public static final String SIGNOUT_EXTRA = "com.android.phone.Signout";
     89 
     90     /**
     91      * String Extra put into ACTION_ADD_VOICEMAIL call to indicate which provider should be hidden
     92      * in the list of providers presented to the user. This allows a provider which is being
     93      * disabled (e.g. GV user logging out) to force the user to pick some other provider.
     94      */
     95     public static final String IGNORE_PROVIDER_EXTRA = "com.android.phone.ProviderToIgnore";
     96 
     97     /**
     98      * String Extra put into ACTION_ADD_VOICEMAIL to indicate that the voicemail setup screen should
     99      * be opened.
    100      */
    101     public static final String SETUP_VOICEMAIL_EXTRA = "com.android.phone.SetupVoicemail";
    102 
    103     // TODO: Define these preference keys in XML.
    104     private static final String BUTTON_VOICEMAIL_KEY = "button_voicemail_key";
    105     private static final String BUTTON_VOICEMAIL_PROVIDER_KEY = "button_voicemail_provider_key";
    106     private static final String BUTTON_VOICEMAIL_SETTING_KEY = "button_voicemail_setting_key";
    107 
    108     /** Event for Async voicemail change call */
    109     private static final int EVENT_VOICEMAIL_CHANGED        = 500;
    110     private static final int EVENT_FORWARDING_CHANGED       = 501;
    111     private static final int EVENT_FORWARDING_GET_COMPLETED = 502;
    112 
    113     /** Handle to voicemail pref */
    114     private static final int VOICEMAIL_PREF_ID = 1;
    115     private static final int VOICEMAIL_PROVIDER_CFG_ID = 2;
    116 
    117     /**
    118      * Results of reading forwarding settings
    119      */
    120     private CallForwardInfo[] mForwardingReadResults = null;
    121 
    122     /**
    123      * Result of forwarding number change.
    124      * Keys are reasons (eg. unconditional forwarding).
    125      */
    126     private Map<Integer, AsyncResult> mForwardingChangeResults = null;
    127 
    128     /**
    129      * Expected CF read result types.
    130      * This set keeps track of the CF types for which we've issued change
    131      * commands so we can tell when we've received all of the responses.
    132      */
    133     private Collection<Integer> mExpectedChangeResultReasons = null;
    134 
    135     /**
    136      * Result of vm number change
    137      */
    138     private AsyncResult mVoicemailChangeResult = null;
    139 
    140     /**
    141      * Previous VM provider setting so we can return to it in case of failure.
    142      */
    143     private String mPreviousVMProviderKey = null;
    144 
    145     /**
    146      * Id of the dialog being currently shown.
    147      */
    148     private int mCurrentDialogId = 0;
    149 
    150     /**
    151      * Flag indicating that we are invoking settings for the voicemail provider programmatically
    152      * due to vm provider change.
    153      */
    154     private boolean mVMProviderSettingsForced = false;
    155 
    156     /**
    157      * Flag indicating that we are making changes to vm or fwd numbers
    158      * due to vm provider change.
    159      */
    160     private boolean mChangingVMorFwdDueToProviderChange = false;
    161 
    162     /**
    163      * True if we are in the process of vm & fwd number change and vm has already been changed.
    164      * This is used to decide what to do in case of rollback.
    165      */
    166     private boolean mVMChangeCompletedSuccessfully = false;
    167 
    168     /**
    169      * True if we had full or partial failure setting forwarding numbers and so need to roll them
    170      * back.
    171      */
    172     private boolean mFwdChangesRequireRollback = false;
    173 
    174     /**
    175      * Id of error msg to display to user once we are done reverting the VM provider to the previous
    176      * one.
    177      */
    178     private int mVMOrFwdSetError = 0;
    179 
    180     /** string to hold old voicemail number as it is being updated. */
    181     private String mOldVmNumber;
    182 
    183     // New call forwarding settings and vm number we will be setting
    184     // Need to save these since before we get to saving we need to asynchronously
    185     // query the existing forwarding settings.
    186     private CallForwardInfo[] mNewFwdSettings;
    187     private String mNewVMNumber;
    188 
    189     /**
    190      * Used to indicate that the voicemail preference should be shown.
    191      */
    192     private boolean mShowVoicemailPreference = false;
    193 
    194     private boolean mForeground;
    195     private Phone mPhone;
    196     private SubscriptionInfoHelper mSubscriptionInfoHelper;
    197     private OmtpVvmCarrierConfigHelper mOmtpVvmCarrierConfigHelper;
    198 
    199     private EditPhoneNumberPreference mSubMenuVoicemailSettings;
    200     private VoicemailProviderListPreference mVoicemailProviders;
    201     private PreferenceScreen mVoicemailSettings;
    202     private VoicemailRingtonePreference mVoicemailNotificationRingtone;
    203     private CheckBoxPreference mVoicemailNotificationVibrate;
    204     private SwitchPreference mVoicemailVisualVoicemail;
    205 
    206 
    207     //*********************************************************************************************
    208     // Preference Activity Methods
    209     //*********************************************************************************************
    210 
    211     @Override
    212     protected void onCreate(Bundle icicle) {
    213         super.onCreate(icicle);
    214 
    215         // Show the voicemail preference in onResume if the calling intent specifies the
    216         // ACTION_ADD_VOICEMAIL action.
    217         mShowVoicemailPreference = (icicle == null) &&
    218                 TextUtils.equals(getIntent().getAction(), ACTION_ADD_VOICEMAIL);
    219 
    220         mSubscriptionInfoHelper = new SubscriptionInfoHelper(this, getIntent());
    221         mSubscriptionInfoHelper.setActionBarTitle(
    222                 getActionBar(), getResources(), R.string.voicemail_settings_with_label);
    223         mPhone = mSubscriptionInfoHelper.getPhone();
    224         mOmtpVvmCarrierConfigHelper = new OmtpVvmCarrierConfigHelper(
    225                 mPhone.getContext(), mPhone.getSubId());
    226     }
    227 
    228     @Override
    229     protected void onResume() {
    230         super.onResume();
    231         mForeground = true;
    232 
    233         PreferenceScreen preferenceScreen = getPreferenceScreen();
    234         if (preferenceScreen != null) {
    235             preferenceScreen.removeAll();
    236         }
    237 
    238         addPreferencesFromResource(R.xml.voicemail_settings);
    239 
    240         PreferenceScreen prefSet = getPreferenceScreen();
    241         mSubMenuVoicemailSettings = (EditPhoneNumberPreference) findPreference(BUTTON_VOICEMAIL_KEY);
    242         mSubMenuVoicemailSettings.setParentActivity(this, VOICEMAIL_PREF_ID, this);
    243         mSubMenuVoicemailSettings.setDialogOnClosedListener(this);
    244         mSubMenuVoicemailSettings.setDialogTitle(R.string.voicemail_settings_number_label);
    245 
    246         mVoicemailProviders = (VoicemailProviderListPreference) findPreference(
    247                 BUTTON_VOICEMAIL_PROVIDER_KEY);
    248         mVoicemailProviders.init(mPhone, getIntent());
    249         mVoicemailProviders.setOnPreferenceChangeListener(this);
    250         mPreviousVMProviderKey = mVoicemailProviders.getValue();
    251 
    252         mVoicemailSettings = (PreferenceScreen) findPreference(BUTTON_VOICEMAIL_SETTING_KEY);
    253 
    254         mVoicemailNotificationRingtone = (VoicemailRingtonePreference) findPreference(
    255                 getResources().getString(R.string.voicemail_notification_ringtone_key));
    256         mVoicemailNotificationRingtone.init(mPhone);
    257 
    258         mVoicemailNotificationVibrate = (CheckBoxPreference) findPreference(
    259                 getResources().getString(R.string.voicemail_notification_vibrate_key));
    260         mVoicemailNotificationVibrate.setOnPreferenceChangeListener(this);
    261 
    262         mVoicemailVisualVoicemail = (SwitchPreference) findPreference(
    263                 getResources().getString(R.string.voicemail_visual_voicemail_key));
    264         if (TelephonyManager.VVM_TYPE_OMTP.equals(mOmtpVvmCarrierConfigHelper.getVvmType()) ||
    265                 TelephonyManager.VVM_TYPE_CVVM.equals(mOmtpVvmCarrierConfigHelper.getVvmType())) {
    266             mVoicemailVisualVoicemail.setOnPreferenceChangeListener(this);
    267             mVoicemailVisualVoicemail.setChecked(
    268                     VisualVoicemailSettingsUtil.isVisualVoicemailEnabled(mPhone));
    269         } else {
    270             prefSet.removePreference(mVoicemailVisualVoicemail);
    271         }
    272 
    273         updateVMPreferenceWidgets(mVoicemailProviders.getValue());
    274 
    275         // check the intent that started this activity and pop up the voicemail
    276         // dialog if we've been asked to.
    277         // If we have at least one non default VM provider registered then bring up
    278         // the selection for the VM provider, otherwise bring up a VM number dialog.
    279         // We only bring up the dialog the first time we are called (not after orientation change)
    280         if (mShowVoicemailPreference) {
    281             if (DBG) log("ACTION_ADD_VOICEMAIL Intent is thrown");
    282             if (mVoicemailProviders.hasMoreThanOneVoicemailProvider()) {
    283                 if (DBG) log("Voicemail data has more than one provider.");
    284                 simulatePreferenceClick(mVoicemailProviders);
    285             } else {
    286                 onPreferenceChange(mVoicemailProviders, VoicemailProviderListPreference.DEFAULT_KEY);
    287                 mVoicemailProviders.setValue(VoicemailProviderListPreference.DEFAULT_KEY);
    288             }
    289             mShowVoicemailPreference = false;
    290         }
    291 
    292         updateVoiceNumberField();
    293         mVMProviderSettingsForced = false;
    294 
    295         mVoicemailNotificationVibrate.setChecked(
    296                 VoicemailNotificationSettingsUtil.isVibrationEnabled(mPhone));
    297     }
    298 
    299     @Override
    300     public void onPause() {
    301         super.onPause();
    302         mForeground = false;
    303     }
    304 
    305     @Override
    306     public boolean onOptionsItemSelected(MenuItem item) {
    307         if (item.getItemId() == android.R.id.home) {
    308             onBackPressed();
    309             return true;
    310         }
    311         return super.onOptionsItemSelected(item);
    312     }
    313 
    314     @Override
    315     public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
    316         if (preference == mSubMenuVoicemailSettings) {
    317             return true;
    318         } else if (preference.getKey().equals(mVoicemailSettings.getKey())) {
    319             // Check key instead of comparing reference because closing the voicemail notification
    320             // ringtone dialog invokes onResume(), but leaves the old preference screen up,
    321             // TODO: Revert to checking reference after migrating voicemail to its own activity.
    322             if (DBG) log("onPreferenceTreeClick: Voicemail Settings Preference is clicked.");
    323 
    324             final Dialog dialog = ((PreferenceScreen) preference).getDialog();
    325             if (dialog != null) {
    326                 dialog.getActionBar().setDisplayHomeAsUpEnabled(false);
    327             }
    328 
    329             if (preference.getIntent() != null) {
    330                 if (DBG) log("Invoking cfg intent " + preference.getIntent().getPackage());
    331 
    332                 // onActivityResult() will be responsible for resetting some of variables.
    333                 this.startActivityForResult(preference.getIntent(), VOICEMAIL_PROVIDER_CFG_ID);
    334                 return true;
    335             } else {
    336                 if (DBG) log("onPreferenceTreeClick(). No intent; use default behavior in xml.");
    337 
    338                 // onActivityResult() will not be called, so reset variables here.
    339                 mPreviousVMProviderKey = VoicemailProviderListPreference.DEFAULT_KEY;
    340                 mVMProviderSettingsForced = false;
    341                 return false;
    342             }
    343         }
    344         return false;
    345     }
    346 
    347     /**
    348      * Implemented to support onPreferenceChangeListener to look for preference changes.
    349      *
    350      * @param preference is the preference to be changed
    351      * @param objValue should be the value of the selection, NOT its localized
    352      * display value.
    353      */
    354     @Override
    355     public boolean onPreferenceChange(Preference preference, Object objValue) {
    356         if (DBG) log("onPreferenceChange: \"" + preference + "\" changed to \"" + objValue + "\"");
    357 
    358         if (preference == mVoicemailProviders) {
    359             final String newProviderKey = (String) objValue;
    360 
    361             // If previous provider key and the new one is same, we don't need to handle it.
    362             if (mPreviousVMProviderKey.equals(newProviderKey)) {
    363                 if (DBG) log("No change is made to the VM provider setting.");
    364                 return true;
    365             }
    366             updateVMPreferenceWidgets(newProviderKey);
    367 
    368             final VoicemailProviderSettings newProviderSettings =
    369                     VoicemailProviderSettingsUtil.load(this, newProviderKey);
    370 
    371             // If the user switches to a voice mail provider and we have numbers stored for it we
    372             // will automatically change the phone's voice mail and forwarding number to the stored
    373             // ones. Otherwise we will bring up provider's configuration UI.
    374             if (newProviderSettings == null) {
    375                 // Force the user into a configuration of the chosen provider
    376                 Log.w(LOG_TAG, "Saved preferences not found - invoking config");
    377                 mVMProviderSettingsForced = true;
    378                 simulatePreferenceClick(mVoicemailSettings);
    379             } else {
    380                 if (DBG) log("Saved preferences found - switching to them");
    381                 // Set this flag so if we get a failure we revert to previous provider
    382                 mChangingVMorFwdDueToProviderChange = true;
    383                 saveVoiceMailAndForwardingNumber(newProviderKey, newProviderSettings);
    384             }
    385         } else if (preference.getKey().equals(mVoicemailNotificationVibrate.getKey())) {
    386             // Check key instead of comparing reference because closing the voicemail notification
    387             // ringtone dialog invokes onResume(), but leaves the old preference screen up,
    388             // TODO: Revert to checking reference after migrating voicemail to its own activity.
    389             VoicemailNotificationSettingsUtil.setVibrationEnabled(
    390                     mPhone, Boolean.TRUE.equals(objValue));
    391         } else if (preference.getKey().equals(mVoicemailVisualVoicemail.getKey())) {
    392             boolean isEnabled = (Boolean) objValue;
    393             VisualVoicemailSettingsUtil.setVisualVoicemailEnabled(mPhone, isEnabled, true);
    394             if (isEnabled) {
    395                 OmtpVvmSourceManager.getInstance(mPhone.getContext()).addPhoneStateListener(mPhone);
    396                 mOmtpVvmCarrierConfigHelper.startActivation();
    397             } else {
    398                 OmtpVvmSourceManager.getInstance(mPhone.getContext()).removeSource(mPhone);
    399                 mOmtpVvmCarrierConfigHelper.startDeactivation();
    400             }
    401         }
    402 
    403         // Always let the preference setting proceed.
    404         return true;
    405     }
    406 
    407     /**
    408      * Implemented for EditPhoneNumberPreference.GetDefaultNumberListener.
    409      * This method set the default values for the various
    410      * EditPhoneNumberPreference dialogs.
    411      */
    412     @Override
    413     public String onGetDefaultNumber(EditPhoneNumberPreference preference) {
    414         if (preference == mSubMenuVoicemailSettings) {
    415             // update the voicemail number field, which takes care of the
    416             // mSubMenuVoicemailSettings itself, so we should return null.
    417             if (DBG) log("updating default for voicemail dialog");
    418             updateVoiceNumberField();
    419             return null;
    420         }
    421 
    422         String vmDisplay = mPhone.getVoiceMailNumber();
    423         if (TextUtils.isEmpty(vmDisplay)) {
    424             // if there is no voicemail number, we just return null to
    425             // indicate no contribution.
    426             return null;
    427         }
    428 
    429         // Return the voicemail number prepended with "VM: "
    430         if (DBG) log("updating default for call forwarding dialogs");
    431         return getString(R.string.voicemail_abbreviated) + " " + vmDisplay;
    432     }
    433 
    434     @Override
    435     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    436         if (DBG) {
    437             log("onActivityResult: requestCode: " + requestCode
    438                     + ", resultCode: " + resultCode
    439                     + ", data: " + data);
    440         }
    441 
    442         // there are cases where the contact picker may end up sending us more than one
    443         // request.  We want to ignore the request if we're not in the correct state.
    444         if (requestCode == VOICEMAIL_PROVIDER_CFG_ID) {
    445             boolean failure = false;
    446 
    447             // No matter how the processing of result goes lets clear the flag
    448             if (DBG) log("mVMProviderSettingsForced: " + mVMProviderSettingsForced);
    449             final boolean isVMProviderSettingsForced = mVMProviderSettingsForced;
    450             mVMProviderSettingsForced = false;
    451 
    452             String vmNum = null;
    453             if (resultCode != RESULT_OK) {
    454                 if (DBG) log("onActivityResult: vm provider cfg result not OK.");
    455                 failure = true;
    456             } else {
    457                 if (data == null) {
    458                     if (DBG) log("onActivityResult: vm provider cfg result has no data");
    459                     failure = true;
    460                 } else {
    461                     if (data.getBooleanExtra(SIGNOUT_EXTRA, false)) {
    462                         if (DBG) log("Provider requested signout");
    463                         if (isVMProviderSettingsForced) {
    464                             if (DBG) log("Going back to previous provider on signout");
    465                             switchToPreviousVoicemailProvider();
    466                         } else {
    467                             final String victim = mVoicemailProviders.getKey();
    468                             if (DBG) log("Relaunching activity and ignoring " + victim);
    469                             Intent i = new Intent(ACTION_ADD_VOICEMAIL);
    470                             i.putExtra(IGNORE_PROVIDER_EXTRA, victim);
    471                             i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    472                             this.startActivity(i);
    473                         }
    474                         return;
    475                     }
    476                     vmNum = data.getStringExtra(VM_NUMBER_EXTRA);
    477                     if (vmNum == null || vmNum.length() == 0) {
    478                         if (DBG) log("onActivityResult: vm provider cfg result has no vmnum");
    479                         failure = true;
    480                     }
    481                 }
    482             }
    483             if (failure) {
    484                 if (DBG) log("Failure in return from voicemail provider.");
    485                 if (isVMProviderSettingsForced) {
    486                     switchToPreviousVoicemailProvider();
    487                 }
    488 
    489                 return;
    490             }
    491             mChangingVMorFwdDueToProviderChange = isVMProviderSettingsForced;
    492             final String fwdNum = data.getStringExtra(FWD_NUMBER_EXTRA);
    493 
    494             // TODO: It would be nice to load the current network setting for this and
    495             // send it to the provider when it's config is invoked so it can use this as default
    496             final int fwdNumTime = data.getIntExtra(FWD_NUMBER_TIME_EXTRA, 20);
    497 
    498             if (DBG) log("onActivityResult: cfg result has forwarding number " + fwdNum);
    499             saveVoiceMailAndForwardingNumber(mVoicemailProviders.getKey(),
    500                     new VoicemailProviderSettings(vmNum, fwdNum, fwdNumTime));
    501             return;
    502         }
    503 
    504         if (requestCode == VOICEMAIL_PREF_ID) {
    505             if (resultCode != RESULT_OK) {
    506                 if (DBG) log("onActivityResult: contact picker result not OK.");
    507                 return;
    508             }
    509 
    510             Cursor cursor = null;
    511             try {
    512                 cursor = getContentResolver().query(data.getData(),
    513                     new String[] { CommonDataKinds.Phone.NUMBER }, null, null, null);
    514                 if ((cursor == null) || (!cursor.moveToFirst())) {
    515                     if (DBG) log("onActivityResult: bad contact data, no results found.");
    516                     return;
    517                 }
    518                 mSubMenuVoicemailSettings.onPickActivityResult(cursor.getString(0));
    519                 return;
    520             } finally {
    521                 if (cursor != null) {
    522                     cursor.close();
    523                 }
    524             }
    525         }
    526 
    527         super.onActivityResult(requestCode, resultCode, data);
    528     }
    529 
    530     /**
    531      * Simulates user clicking on a passed preference.
    532      * Usually needed when the preference is a dialog preference and we want to invoke
    533      * a dialog for this preference programmatically.
    534      * TODO: figure out if there is a cleaner way to cause preference dlg to come up
    535      */
    536     private void simulatePreferenceClick(Preference preference) {
    537         // Go through settings until we find our setting
    538         // and then simulate a click on it to bring up the dialog
    539         final ListAdapter adapter = getPreferenceScreen().getRootAdapter();
    540         for (int idx = 0; idx < adapter.getCount(); idx++) {
    541             if (adapter.getItem(idx) == preference) {
    542                 getPreferenceScreen().onItemClick(this.getListView(),
    543                         null, idx, adapter.getItemId(idx));
    544                 break;
    545             }
    546         }
    547     }
    548 
    549 
    550     //*********************************************************************************************
    551     // Activity Dialog Methods
    552     //*********************************************************************************************
    553 
    554     @Override
    555     protected void onPrepareDialog(int id, Dialog dialog) {
    556         super.onPrepareDialog(id, dialog);
    557         mCurrentDialogId = id;
    558     }
    559 
    560     // dialog creation method, called by showDialog()
    561     @Override
    562     protected Dialog onCreateDialog(int dialogId) {
    563         return VoicemailDialogUtil.getDialog(this, dialogId);
    564     }
    565 
    566     @Override
    567     public void onDialogClosed(EditPhoneNumberPreference preference, int buttonClicked) {
    568         if (DBG) log("onDialogClosed: Button clicked is " + buttonClicked);
    569 
    570         if (buttonClicked == DialogInterface.BUTTON_NEGATIVE) {
    571             return;
    572         }
    573 
    574         if (preference == mSubMenuVoicemailSettings) {
    575             VoicemailProviderSettings newSettings = new VoicemailProviderSettings(
    576                     mSubMenuVoicemailSettings.getPhoneNumber(),
    577                     VoicemailProviderSettings.NO_FORWARDING);
    578             saveVoiceMailAndForwardingNumber(mVoicemailProviders.getKey(), newSettings);
    579         }
    580     }
    581 
    582     /**
    583      * Wrapper around showDialog() that will silently do nothing if we're
    584      * not in the foreground.
    585      *
    586      * This is useful here because most of the dialogs we display from
    587      * this class are triggered by asynchronous events (like
    588      * success/failure messages from the telephony layer) and it's
    589      * possible for those events to come in even after the user has gone
    590      * to a different screen.
    591      */
    592     // TODO: this is too brittle: it's still easy to accidentally add new
    593     // code here that calls showDialog() directly (which will result in a
    594     // WindowManager$BadTokenException if called after the activity has
    595     // been stopped.)
    596     //
    597     // It would be cleaner to do the "if (mForeground)" check in one
    598     // central place, maybe by using a single Handler for all asynchronous
    599     // events (and have *that* discard events if we're not in the
    600     // foreground.)
    601     //
    602     // Unfortunately it's not that simple, since we sometimes need to do
    603     // actual work to handle these events whether or not we're in the
    604     // foreground (see the Handler code in mSetOptionComplete for
    605     // example.)
    606     //
    607     // TODO: It's a bit worrisome that we don't do anything in error cases when we're not in the
    608     // foreground. Consider displaying a toast instead.
    609     private void showDialogIfForeground(int id) {
    610         if (mForeground) {
    611             showDialog(id);
    612         }
    613     }
    614 
    615     private void dismissDialogSafely(int id) {
    616         try {
    617             dismissDialog(id);
    618         } catch (IllegalArgumentException e) {
    619             // This is expected in the case where we were in the background
    620             // at the time we would normally have shown the dialog, so we didn't
    621             // show it.
    622         }
    623     }
    624 
    625     // This is a method implemented for DialogInterface.OnClickListener.
    626     // Used with the error dialog to close the app, voicemail dialog to just dismiss.
    627     // Close button is mapped to BUTTON_POSITIVE for the errors that close the activity,
    628     // while those that are mapped to BUTTON_NEUTRAL only move the preference focus.
    629     public void onClick(DialogInterface dialog, int which) {
    630         if (DBG) log("onClick: button clicked is " + which);
    631 
    632         dialog.dismiss();
    633         switch (which){
    634             case DialogInterface.BUTTON_NEGATIVE:
    635                 if (mCurrentDialogId == VoicemailDialogUtil.FWD_GET_RESPONSE_ERROR_DIALOG) {
    636                     // We failed to get current forwarding settings and the user
    637                     // does not wish to continue.
    638                     switchToPreviousVoicemailProvider();
    639                 }
    640                 break;
    641             case DialogInterface.BUTTON_POSITIVE:
    642                 if (mCurrentDialogId == VoicemailDialogUtil.FWD_GET_RESPONSE_ERROR_DIALOG) {
    643                     // We failed to get current forwarding settings but the user
    644                     // wishes to continue changing settings to the new vm provider
    645                     setVoicemailNumberWithCarrier();
    646                 } else {
    647                     finish();
    648                 }
    649                 return;
    650             default:
    651                 // just let the dialog close and go back to the input
    652         }
    653 
    654         // In all dialogs, all buttons except BUTTON_POSITIVE lead to the end of user interaction
    655         // with settings UI. If we were called to explicitly configure voice mail then
    656         // we finish the settings activity here to come back to whatever the user was doing.
    657         final String action = getIntent() != null ? getIntent().getAction() : null;
    658         if (ACTION_ADD_VOICEMAIL.equals(action)) {
    659             finish();
    660         }
    661     }
    662 
    663 
    664     //*********************************************************************************************
    665     // Voicemail Methods
    666     //*********************************************************************************************
    667 
    668     /**
    669      * TODO: Refactor to make it easier to understand what's done in the different stages.
    670      */
    671     private void saveVoiceMailAndForwardingNumber(
    672             String key, VoicemailProviderSettings newSettings) {
    673         if (DBG) log("saveVoiceMailAndForwardingNumber: " + newSettings.toString());
    674         mNewVMNumber = newSettings.getVoicemailNumber();
    675         mNewVMNumber = (mNewVMNumber == null) ? "" : mNewVMNumber;
    676         mNewFwdSettings = newSettings.getForwardingSettings();
    677 
    678         // Call forwarding is not suppported on CDMA.
    679         if (mPhone.getPhoneType() == PhoneConstants.PHONE_TYPE_CDMA) {
    680             if (DBG) log("Ignoring forwarding setting since this is CDMA phone");
    681             mNewFwdSettings = VoicemailProviderSettings.NO_FORWARDING;
    682         }
    683 
    684         // Throw a warning if the voicemail is the same and we did not change forwarding.
    685         if (mNewVMNumber.equals(mOldVmNumber)
    686                 && mNewFwdSettings == VoicemailProviderSettings.NO_FORWARDING) {
    687             showDialogIfForeground(VoicemailDialogUtil.VM_NOCHANGE_ERROR_DIALOG);
    688             return;
    689         }
    690 
    691         VoicemailProviderSettingsUtil.save(this, key, newSettings);
    692         mVMChangeCompletedSuccessfully = false;
    693         mFwdChangesRequireRollback = false;
    694         mVMOrFwdSetError = 0;
    695 
    696         if (mNewFwdSettings == VoicemailProviderSettings.NO_FORWARDING
    697                 || key.equals(mPreviousVMProviderKey)) {
    698             if (DBG) log("Set voicemail number. No changes to forwarding number.");
    699             setVoicemailNumberWithCarrier();
    700         } else {
    701             if (DBG) log("Reading current forwarding settings.");
    702             int numSettingsReasons = VoicemailProviderSettings.FORWARDING_SETTINGS_REASONS.length;
    703             mForwardingReadResults = new CallForwardInfo[numSettingsReasons];
    704             for (int i = 0; i < mForwardingReadResults.length; i++) {
    705                 mPhone.getCallForwardingOption(
    706                         VoicemailProviderSettings.FORWARDING_SETTINGS_REASONS[i],
    707                         mGetOptionComplete.obtainMessage(EVENT_FORWARDING_GET_COMPLETED, i, 0));
    708             }
    709             showDialogIfForeground(VoicemailDialogUtil.VM_FWD_READING_DIALOG);
    710         }
    711     }
    712 
    713     private final Handler mGetOptionComplete = new Handler() {
    714         @Override
    715         public void handleMessage(Message msg) {
    716             AsyncResult result = (AsyncResult) msg.obj;
    717             switch (msg.what) {
    718                 case EVENT_FORWARDING_GET_COMPLETED:
    719                     handleForwardingSettingsReadResult(result, msg.arg1);
    720                     break;
    721             }
    722         }
    723     };
    724 
    725     private void handleForwardingSettingsReadResult(AsyncResult ar, int idx) {
    726         if (DBG) Log.d(LOG_TAG, "handleForwardingSettingsReadResult: " + idx);
    727 
    728         Throwable error = null;
    729         if (ar.exception != null) {
    730             error = ar.exception;
    731             if (DBG) Log.d(LOG_TAG, "FwdRead: ar.exception=" + error.getMessage());
    732         }
    733         if (ar.userObj instanceof Throwable) {
    734             error = (Throwable) ar.userObj;
    735             if (DBG) Log.d(LOG_TAG, "FwdRead: userObj=" + error.getMessage());
    736         }
    737 
    738         // We may have already gotten an error and decided to ignore the other results.
    739         if (mForwardingReadResults == null) {
    740             if (DBG) Log.d(LOG_TAG, "Ignoring fwd reading result: " + idx);
    741             return;
    742         }
    743 
    744         // In case of error ignore other results, show an error dialog
    745         if (error != null) {
    746             if (DBG) Log.d(LOG_TAG, "Error discovered for fwd read : " + idx);
    747             mForwardingReadResults = null;
    748             dismissDialogSafely(VoicemailDialogUtil.VM_FWD_READING_DIALOG);
    749             showDialogIfForeground(VoicemailDialogUtil.FWD_GET_RESPONSE_ERROR_DIALOG);
    750             return;
    751         }
    752 
    753         // Get the forwarding info.
    754         mForwardingReadResults[idx] = CallForwardInfoUtil.getCallForwardInfo(
    755                 (CallForwardInfo[]) ar.result,
    756                 VoicemailProviderSettings.FORWARDING_SETTINGS_REASONS[idx]);
    757 
    758         // Check if we got all the results already
    759         boolean done = true;
    760         for (int i = 0; i < mForwardingReadResults.length; i++) {
    761             if (mForwardingReadResults[i] == null) {
    762                 done = false;
    763                 break;
    764             }
    765         }
    766 
    767         if (done) {
    768             if (DBG) Log.d(LOG_TAG, "Done receiving fwd info");
    769             dismissDialogSafely(VoicemailDialogUtil.VM_FWD_READING_DIALOG);
    770 
    771             if (mPreviousVMProviderKey.equals(VoicemailProviderListPreference.DEFAULT_KEY)) {
    772                 VoicemailProviderSettingsUtil.save(mPhone.getContext(),
    773                         VoicemailProviderListPreference.DEFAULT_KEY,
    774                         new VoicemailProviderSettings(mOldVmNumber, mForwardingReadResults));
    775             }
    776             saveVoiceMailAndForwardingNumberStage2();
    777         }
    778     }
    779 
    780     private void resetForwardingChangeState() {
    781         mForwardingChangeResults = new HashMap<Integer, AsyncResult>();
    782         mExpectedChangeResultReasons = new HashSet<Integer>();
    783     }
    784 
    785     // Called after we are done saving the previous forwarding settings if we needed.
    786     private void saveVoiceMailAndForwardingNumberStage2() {
    787         mForwardingChangeResults = null;
    788         mVoicemailChangeResult = null;
    789 
    790         resetForwardingChangeState();
    791         for (int i = 0; i < mNewFwdSettings.length; i++) {
    792             CallForwardInfo fi = mNewFwdSettings[i];
    793             CallForwardInfo fiForReason =
    794                     CallForwardInfoUtil.infoForReason(mForwardingReadResults, fi.reason);
    795             final boolean doUpdate = CallForwardInfoUtil.isUpdateRequired(fiForReason, fi);
    796 
    797             if (doUpdate) {
    798                 if (DBG) log("Setting fwd #: " + i + ": " + fi.toString());
    799                 mExpectedChangeResultReasons.add(i);
    800 
    801                 CallForwardInfoUtil.setCallForwardingOption(mPhone, fi,
    802                         mSetOptionComplete.obtainMessage(
    803                                 EVENT_FORWARDING_CHANGED, fi.reason, 0));
    804             }
    805         }
    806         showDialogIfForeground(VoicemailDialogUtil.VM_FWD_SAVING_DIALOG);
    807     }
    808 
    809 
    810     /**
    811      * Callback to handle option update completions
    812      */
    813     private final Handler mSetOptionComplete = new Handler() {
    814         @Override
    815         public void handleMessage(Message msg) {
    816             AsyncResult result = (AsyncResult) msg.obj;
    817             boolean done = false;
    818             switch (msg.what) {
    819                 case EVENT_VOICEMAIL_CHANGED:
    820                     mVoicemailChangeResult = result;
    821                     mVMChangeCompletedSuccessfully = isVmChangeSuccess();
    822                     PhoneGlobals.getInstance().refreshMwiIndicator(
    823                             mSubscriptionInfoHelper.getSubId());
    824                     done = true;
    825                     break;
    826                 case EVENT_FORWARDING_CHANGED:
    827                     mForwardingChangeResults.put(msg.arg1, result);
    828                     if (result.exception != null) {
    829                         Log.w(LOG_TAG, "Error in setting fwd# " + msg.arg1 + ": " +
    830                                 result.exception.getMessage());
    831                     }
    832                     if (isForwardingCompleted()) {
    833                         if (isFwdChangeSuccess()) {
    834                             if (DBG) log("Overall fwd changes completed ok, starting vm change");
    835                             setVoicemailNumberWithCarrier();
    836                         } else {
    837                             Log.w(LOG_TAG, "Overall fwd changes completed in failure. " +
    838                                     "Check if we need to try rollback for some settings.");
    839                             mFwdChangesRequireRollback = false;
    840                             Iterator<Map.Entry<Integer,AsyncResult>> it =
    841                                 mForwardingChangeResults.entrySet().iterator();
    842                             while (it.hasNext()) {
    843                                 Map.Entry<Integer,AsyncResult> entry = it.next();
    844                                 if (entry.getValue().exception == null) {
    845                                     // If at least one succeeded we have to revert
    846                                     Log.i(LOG_TAG, "Rollback will be required");
    847                                     mFwdChangesRequireRollback = true;
    848                                     break;
    849                                 }
    850                             }
    851                             if (!mFwdChangesRequireRollback) {
    852                                 Log.i(LOG_TAG, "No rollback needed.");
    853                             }
    854                             done = true;
    855                         }
    856                     }
    857                     break;
    858                 default:
    859                     // TODO: should never reach this, may want to throw exception
    860             }
    861 
    862             if (done) {
    863                 if (DBG) log("All VM provider related changes done");
    864                 if (mForwardingChangeResults != null) {
    865                     dismissDialogSafely(VoicemailDialogUtil.VM_FWD_SAVING_DIALOG);
    866                 }
    867                 handleSetVmOrFwdMessage();
    868             }
    869         }
    870     };
    871 
    872     /**
    873      * Callback to handle option revert completions
    874      */
    875     private final Handler mRevertOptionComplete = new Handler() {
    876         @Override
    877         public void handleMessage(Message msg) {
    878             AsyncResult result = (AsyncResult) msg.obj;
    879             switch (msg.what) {
    880                 case EVENT_VOICEMAIL_CHANGED:
    881                     if (DBG) log("VM revert complete msg");
    882                     mVoicemailChangeResult = result;
    883                     break;
    884 
    885                 case EVENT_FORWARDING_CHANGED:
    886                     if (DBG) log("FWD revert complete msg ");
    887                     mForwardingChangeResults.put(msg.arg1, result);
    888                     if (result.exception != null) {
    889                         if (DBG) log("Error in reverting fwd# " + msg.arg1 + ": " +
    890                                 result.exception.getMessage());
    891                     }
    892                     break;
    893 
    894                 default:
    895                     // TODO: should never reach this, may want to throw exception
    896             }
    897 
    898             final boolean done = (!mVMChangeCompletedSuccessfully || mVoicemailChangeResult != null)
    899                     && (!mFwdChangesRequireRollback || isForwardingCompleted());
    900             if (done) {
    901                 if (DBG) log("All VM reverts done");
    902                 dismissDialogSafely(VoicemailDialogUtil.VM_REVERTING_DIALOG);
    903                 onRevertDone();
    904             }
    905         }
    906     };
    907 
    908     private void setVoicemailNumberWithCarrier() {
    909         if (DBG) log("save voicemail #: " + mNewVMNumber);
    910 
    911         mVoicemailChangeResult = null;
    912         mPhone.setVoiceMailNumber(
    913                 mPhone.getVoiceMailAlphaTag().toString(),
    914                 mNewVMNumber,
    915                 Message.obtain(mSetOptionComplete, EVENT_VOICEMAIL_CHANGED));
    916     }
    917 
    918     private void switchToPreviousVoicemailProvider() {
    919         if (DBG) log("switchToPreviousVoicemailProvider " + mPreviousVMProviderKey);
    920 
    921         if (mPreviousVMProviderKey == null) {
    922             return;
    923         }
    924 
    925         if (mVMChangeCompletedSuccessfully || mFwdChangesRequireRollback) {
    926             showDialogIfForeground(VoicemailDialogUtil.VM_REVERTING_DIALOG);
    927             final VoicemailProviderSettings prevSettings =
    928                     VoicemailProviderSettingsUtil.load(this, mPreviousVMProviderKey);
    929             if (prevSettings == null) {
    930                 Log.e(LOG_TAG, "VoicemailProviderSettings for the key \""
    931                         + mPreviousVMProviderKey + "\" is null but should be loaded.");
    932                 return;
    933             }
    934 
    935             if (mVMChangeCompletedSuccessfully) {
    936                 mNewVMNumber = prevSettings.getVoicemailNumber();
    937                 Log.i(LOG_TAG, "VM change is already completed successfully."
    938                         + "Have to revert VM back to " + mNewVMNumber + " again.");
    939                 mPhone.setVoiceMailNumber(
    940                         mPhone.getVoiceMailAlphaTag().toString(),
    941                         mNewVMNumber,
    942                         Message.obtain(mRevertOptionComplete, EVENT_VOICEMAIL_CHANGED));
    943             }
    944 
    945             if (mFwdChangesRequireRollback) {
    946                 Log.i(LOG_TAG, "Requested to rollback forwarding changes.");
    947 
    948                 final CallForwardInfo[] prevFwdSettings = prevSettings.getForwardingSettings();
    949                 if (prevFwdSettings != null) {
    950                     Map<Integer, AsyncResult> results = mForwardingChangeResults;
    951                     resetForwardingChangeState();
    952                     for (int i = 0; i < prevFwdSettings.length; i++) {
    953                         CallForwardInfo fi = prevFwdSettings[i];
    954                         if (DBG) log("Reverting fwd #: " + i + ": " + fi.toString());
    955                         // Only revert the settings for which the update succeeded.
    956                         AsyncResult result = results.get(fi.reason);
    957                         if (result != null && result.exception == null) {
    958                             mExpectedChangeResultReasons.add(fi.reason);
    959                             CallForwardInfoUtil.setCallForwardingOption(mPhone, fi,
    960                                     mRevertOptionComplete.obtainMessage(
    961                                             EVENT_FORWARDING_CHANGED, i, 0));
    962                         }
    963                     }
    964                 }
    965             }
    966         } else {
    967             if (DBG) log("No need to revert");
    968             onRevertDone();
    969         }
    970     }
    971 
    972 
    973     //*********************************************************************************************
    974     // Voicemail Handler Helpers
    975     //*********************************************************************************************
    976 
    977     /**
    978      * Updates the look of the VM preference widgets based on current VM provider settings.
    979      * Note that the provider name is loaded fxrorm the found activity via loadLabel in
    980      * {@link VoicemailProviderListPreference#initVoiceMailProviders()} in order for it to be
    981      * localizable.
    982      */
    983     private void updateVMPreferenceWidgets(String currentProviderSetting) {
    984         final String key = currentProviderSetting;
    985         final VoicemailProviderListPreference.VoicemailProvider provider =
    986                 mVoicemailProviders.getVoicemailProvider(key);
    987 
    988         /* This is the case when we are coming up on a freshly wiped phone and there is no
    989          persisted value for the list preference mVoicemailProviders.
    990          In this case we want to show the UI asking the user to select a voicemail provider as
    991          opposed to silently falling back to default one. */
    992         if (provider == null) {
    993             if (DBG) log("updateVMPreferenceWidget: key: " + key + " -> null.");
    994 
    995             mVoicemailProviders.setSummary(getString(R.string.sum_voicemail_choose_provider));
    996             mVoicemailSettings.setEnabled(false);
    997             mVoicemailSettings.setIntent(null);
    998             mVoicemailNotificationVibrate.setEnabled(false);
    999         } else {
   1000             if (DBG) log("updateVMPreferenceWidget: key: " + key + " -> " + provider.toString());
   1001 
   1002             final String providerName = provider.name;
   1003             mVoicemailProviders.setSummary(providerName);
   1004             mVoicemailSettings.setEnabled(true);
   1005             mVoicemailSettings.setIntent(provider.intent);
   1006             mVoicemailNotificationVibrate.setEnabled(true);
   1007         }
   1008     }
   1009 
   1010     /**
   1011      * Update the voicemail number from what we've recorded on the sim.
   1012      */
   1013     private void updateVoiceNumberField() {
   1014         if (DBG) log("updateVoiceNumberField()");
   1015 
   1016         mOldVmNumber = mPhone.getVoiceMailNumber();
   1017         if (TextUtils.isEmpty(mOldVmNumber)) {
   1018             mSubMenuVoicemailSettings.setPhoneNumber("");
   1019             mSubMenuVoicemailSettings.setSummary(getString(R.string.voicemail_number_not_set));
   1020         } else {
   1021             mSubMenuVoicemailSettings.setPhoneNumber(mOldVmNumber);
   1022             mSubMenuVoicemailSettings.setSummary(BidiFormatter.getInstance().unicodeWrap(
   1023                     mOldVmNumber, TextDirectionHeuristics.LTR));
   1024         }
   1025     }
   1026 
   1027     private void handleSetVmOrFwdMessage() {
   1028         if (DBG) log("handleSetVMMessage: set VM request complete");
   1029 
   1030         if (!isFwdChangeSuccess()) {
   1031             handleVmOrFwdSetError(VoicemailDialogUtil.FWD_SET_RESPONSE_ERROR_DIALOG);
   1032         } else if (!isVmChangeSuccess()) {
   1033             handleVmOrFwdSetError(VoicemailDialogUtil.VM_RESPONSE_ERROR_DIALOG);
   1034         } else {
   1035             handleVmAndFwdSetSuccess(VoicemailDialogUtil.VM_CONFIRM_DIALOG);
   1036         }
   1037     }
   1038 
   1039     /**
   1040      * Called when Voicemail Provider or its forwarding settings failed. Rolls back partly made
   1041      * changes to those settings and show "failure" dialog.
   1042      *
   1043      * @param dialogId ID of the dialog to show for the specific error case. Either
   1044      *     {@link #FWD_SET_RESPONSE_ERROR_DIALOG} or {@link #VM_RESPONSE_ERROR_DIALOG}
   1045      */
   1046     private void handleVmOrFwdSetError(int dialogId) {
   1047         if (mChangingVMorFwdDueToProviderChange) {
   1048             mVMOrFwdSetError = dialogId;
   1049             mChangingVMorFwdDueToProviderChange = false;
   1050             switchToPreviousVoicemailProvider();
   1051             return;
   1052         }
   1053         mChangingVMorFwdDueToProviderChange = false;
   1054         showDialogIfForeground(dialogId);
   1055         updateVoiceNumberField();
   1056     }
   1057 
   1058     /**
   1059      * Called when Voicemail Provider and its forwarding settings were successfully finished.
   1060      * This updates a bunch of variables and show "success" dialog.
   1061      */
   1062     private void handleVmAndFwdSetSuccess(int dialogId) {
   1063         if (DBG) log("handleVmAndFwdSetSuccess: key is " + mVoicemailProviders.getKey());
   1064 
   1065         mPreviousVMProviderKey = mVoicemailProviders.getKey();
   1066         mChangingVMorFwdDueToProviderChange = false;
   1067         showDialogIfForeground(dialogId);
   1068         updateVoiceNumberField();
   1069     }
   1070 
   1071     private void onRevertDone() {
   1072         if (DBG) log("onRevertDone: Changing provider key back to " + mPreviousVMProviderKey);
   1073 
   1074         updateVMPreferenceWidgets(mPreviousVMProviderKey);
   1075         updateVoiceNumberField();
   1076         if (mVMOrFwdSetError != 0) {
   1077             showDialogIfForeground(mVMOrFwdSetError);
   1078             mVMOrFwdSetError = 0;
   1079         }
   1080     }
   1081 
   1082 
   1083     //*********************************************************************************************
   1084     // Voicemail State Helpers
   1085     //*********************************************************************************************
   1086 
   1087     /**
   1088      * Return true if there is a change result for every reason for which we expect a result.
   1089      */
   1090     private boolean isForwardingCompleted() {
   1091         if (mForwardingChangeResults == null) {
   1092             return true;
   1093         }
   1094 
   1095         for (Integer reason : mExpectedChangeResultReasons) {
   1096             if (mForwardingChangeResults.get(reason) == null) {
   1097                 return false;
   1098             }
   1099         }
   1100 
   1101         return true;
   1102     }
   1103 
   1104     private boolean isFwdChangeSuccess() {
   1105         if (mForwardingChangeResults == null) {
   1106             return true;
   1107         }
   1108 
   1109         for (AsyncResult result : mForwardingChangeResults.values()) {
   1110             Throwable exception = result.exception;
   1111             if (exception != null) {
   1112                 String msg = exception.getMessage();
   1113                 msg = (msg != null) ? msg : "";
   1114                 Log.w(LOG_TAG, "Failed to change forwarding setting. Reason: " + msg);
   1115                 return false;
   1116             }
   1117         }
   1118         return true;
   1119     }
   1120 
   1121     private boolean isVmChangeSuccess() {
   1122         if (mVoicemailChangeResult.exception != null) {
   1123             String msg = mVoicemailChangeResult.exception.getMessage();
   1124             msg = (msg != null) ? msg : "";
   1125             Log.w(LOG_TAG, "Failed to change voicemail. Reason: " + msg);
   1126             return false;
   1127         }
   1128         return true;
   1129     }
   1130 
   1131     private static void log(String msg) {
   1132         Log.d(LOG_TAG, msg);
   1133     }
   1134 }
   1135