src/com/android/settings/SoundSettings.java - platform/packages/apps/Settings - Git at Google

 /*
  * Copyright (C) 2007 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.settings;

 import com.android.settings.bluetooth.DockEventReceiver;

 import android.app.AlertDialog;
 import android.app.Dialog;
 import android.bluetooth.BluetoothDevice;
 import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.database.Cursor;
 import android.database.sqlite.SQLiteException;
 import android.media.AudioManager;
 import android.media.RingtoneManager;
 import android.media.audiofx.AudioEffect;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
 import android.os.Vibrator;
 import android.preference.CheckBoxPreference;
 import android.preference.ListPreference;
 import android.preference.Preference;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
 import android.provider.MediaStore;
 import android.provider.Settings;
 import android.telephony.TelephonyManager;
 import android.util.Log;

 import java.util.List;

 public class SoundSettings extends SettingsPreferenceFragment implements
         Preference.OnPreferenceChangeListener {
     private static final String TAG = "SoundSettings";

     private static final int DIALOG_NOT_DOCKED = 1;

     /** If there is no setting in the provider, use this. */
     private static final int FALLBACK_EMERGENCY_TONE_VALUE = 0;

     private static final String KEY_VIBRATE = "vibrate_when_ringing";
     private static final String KEY_RING_VOLUME = "ring_volume";
     private static final String KEY_MUSICFX = "musicfx";
     private static final String KEY_DTMF_TONE = "dtmf_tone";
     private static final String KEY_SOUND_EFFECTS = "sound_effects";
     private static final String KEY_HAPTIC_FEEDBACK = "haptic_feedback";
     private static final String KEY_EMERGENCY_TONE = "emergency_tone";
     private static final String KEY_SOUND_SETTINGS = "sound_settings";
     private static final String KEY_LOCK_SOUNDS = "lock_sounds";
     private static final String KEY_RINGTONE = "ringtone";
     private static final String KEY_NOTIFICATION_SOUND = "notification_sound";
     private static final String KEY_CATEGORY_CALLS = "category_calls_and_notification";
     private static final String KEY_DOCK_CATEGORY = "dock_category";
     private static final String KEY_DOCK_AUDIO_SETTINGS = "dock_audio";
     private static final String KEY_DOCK_SOUNDS = "dock_sounds";
     private static final String KEY_DOCK_AUDIO_MEDIA_ENABLED = "dock_audio_media_enabled";

     private static final String[] NEED_VOICE_CAPABILITY = {
             KEY_RINGTONE, KEY_DTMF_TONE, KEY_CATEGORY_CALLS,
             KEY_EMERGENCY_TONE, KEY_VIBRATE
     };

     private static final int MSG_UPDATE_RINGTONE_SUMMARY = 1;
     private static final int MSG_UPDATE_NOTIFICATION_SUMMARY = 2;

     private CheckBoxPreference mVibrateWhenRinging;
     private CheckBoxPreference mDtmfTone;
     private CheckBoxPreference mSoundEffects;
     private CheckBoxPreference mHapticFeedback;
     private Preference mMusicFx;
     private CheckBoxPreference mLockSounds;
     private Preference mRingtonePreference;
     private Preference mNotificationPreference;

     private Runnable mRingtoneLookupRunnable;

     private AudioManager mAudioManager;

     private Preference mDockAudioSettings;
     private CheckBoxPreference mDockSounds;
     private Intent mDockIntent;
     private CheckBoxPreference mDockAudioMediaEnabled;

     private Handler mHandler = new Handler() {
         public void handleMessage(Message msg) {
             switch (msg.what) {
             case MSG_UPDATE_RINGTONE_SUMMARY:
                 mRingtonePreference.setSummary((CharSequence) msg.obj);
                 break;
             case MSG_UPDATE_NOTIFICATION_SUMMARY:
                 mNotificationPreference.setSummary((CharSequence) msg.obj);
                 break;
             }
         }
     };

     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             if (intent.getAction().equals(Intent.ACTION_DOCK_EVENT)) {
                 handleDockChange(intent);
             }
         }
     };

     private PreferenceGroup mSoundSettings;

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         ContentResolver resolver = getContentResolver();
         int activePhoneType = TelephonyManager.getDefault().getCurrentPhoneType();

         mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

         addPreferencesFromResource(R.xml.sound_settings);

         if (TelephonyManager.PHONE_TYPE_CDMA != activePhoneType) {
             // device is not CDMA, do not display CDMA emergency_tone
             getPreferenceScreen().removePreference(findPreference(KEY_EMERGENCY_TONE));
         }

         if (!getResources().getBoolean(R.bool.has_silent_mode)) {
             findPreference(KEY_RING_VOLUME).setDependency(null);
         }

         if (getResources().getBoolean(com.android.internal.R.bool.config_useFixedVolume)) {
             // device with fixed volume policy, do not display volumes submenu
             getPreferenceScreen().removePreference(findPreference(KEY_RING_VOLUME));
         }

         mVibrateWhenRinging = (CheckBoxPreference) findPreference(KEY_VIBRATE);
         mVibrateWhenRinging.setPersistent(false);
         mVibrateWhenRinging.setChecked(Settings.System.getInt(resolver,
                 Settings.System.VIBRATE_WHEN_RINGING, 0) != 0);

         mDtmfTone = (CheckBoxPreference) findPreference(KEY_DTMF_TONE);
         mDtmfTone.setPersistent(false);
         mDtmfTone.setChecked(Settings.System.getInt(resolver,
                 Settings.System.DTMF_TONE_WHEN_DIALING, 1) != 0);
         mSoundEffects = (CheckBoxPreference) findPreference(KEY_SOUND_EFFECTS);
         mSoundEffects.setPersistent(false);
         mSoundEffects.setChecked(Settings.System.getInt(resolver,
                 Settings.System.SOUND_EFFECTS_ENABLED, 1) != 0);
         mHapticFeedback = (CheckBoxPreference) findPreference(KEY_HAPTIC_FEEDBACK);
         mHapticFeedback.setPersistent(false);
         mHapticFeedback.setChecked(Settings.System.getInt(resolver,
                 Settings.System.HAPTIC_FEEDBACK_ENABLED, 1) != 0);
         mLockSounds = (CheckBoxPreference) findPreference(KEY_LOCK_SOUNDS);
         mLockSounds.setPersistent(false);
         mLockSounds.setChecked(Settings.System.getInt(resolver,
                 Settings.System.LOCKSCREEN_SOUNDS_ENABLED, 1) != 0);

         mRingtonePreference = findPreference(KEY_RINGTONE);
         mNotificationPreference = findPreference(KEY_NOTIFICATION_SOUND);

         Vibrator vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
         if (vibrator == null || !vibrator.hasVibrator()) {
             removePreference(KEY_VIBRATE);
             removePreference(KEY_HAPTIC_FEEDBACK);
         }

         if (TelephonyManager.PHONE_TYPE_CDMA == activePhoneType) {
             ListPreference emergencyTonePreference =
                 (ListPreference) findPreference(KEY_EMERGENCY_TONE);
             emergencyTonePreference.setValue(String.valueOf(Settings.Global.getInt(
                 resolver, Settings.Global.EMERGENCY_TONE, FALLBACK_EMERGENCY_TONE_VALUE)));
             emergencyTonePreference.setOnPreferenceChangeListener(this);
         }

         mSoundSettings = (PreferenceGroup) findPreference(KEY_SOUND_SETTINGS);

         mMusicFx = mSoundSettings.findPreference(KEY_MUSICFX);
         Intent i = new Intent(AudioEffect.ACTION_DISPLAY_AUDIO_EFFECT_CONTROL_PANEL);
         PackageManager p = getPackageManager();
         List<ResolveInfo> ris = p.queryIntentActivities(i, PackageManager.GET_DISABLED_COMPONENTS);
         if (ris.size() <= 2) {
             // no need to show the item if there is no choice for the user to make
             // note: the built in musicfx panel has two activities (one being a
             // compatibility shim that launches either the other activity, or a
             // third party one), hence the check for <=2. If the implementation
             // of the compatbility layer changes, this check may need to be updated.
             mSoundSettings.removePreference(mMusicFx);
         }

         if (!Utils.isVoiceCapable(getActivity())) {
             for (String prefKey : NEED_VOICE_CAPABILITY) {
                 Preference pref = findPreference(prefKey);
                 if (pref != null) {
                     getPreferenceScreen().removePreference(pref);
                 }
             }
         }

         mRingtoneLookupRunnable = new Runnable() {
             public void run() {
                 if (mRingtonePreference != null) {
                     updateRingtoneName(RingtoneManager.TYPE_RINGTONE, mRingtonePreference,
                             MSG_UPDATE_RINGTONE_SUMMARY);
                 }
                 if (mNotificationPreference != null) {
                     updateRingtoneName(RingtoneManager.TYPE_NOTIFICATION, mNotificationPreference,
                             MSG_UPDATE_NOTIFICATION_SUMMARY);
                 }
             }
         };

         initDockSettings();
     }

     @Override
     public void onResume() {
         super.onResume();

         lookupRingtoneNames();

         IntentFilter filter = new IntentFilter(Intent.ACTION_DOCK_EVENT);
         getActivity().registerReceiver(mReceiver, filter);
     }

     @Override
     public void onPause() {
         super.onPause();

         getActivity().unregisterReceiver(mReceiver);
     }

     private void updateRingtoneName(int type, Preference preference, int msg) {
         if (preference == null) return;
         Context context = getActivity();
         if (context == null) return;
         Uri ringtoneUri = RingtoneManager.getActualDefaultRingtoneUri(context, type);
         CharSequence summary = context.getString(com.android.internal.R.string.ringtone_unknown);
         // Is it a silent ringtone?
         if (ringtoneUri == null) {
             summary = context.getString(com.android.internal.R.string.ringtone_silent);
         } else {
             // Fetch the ringtone title from the media provider
             try {
                 Cursor cursor = context.getContentResolver().query(ringtoneUri,
                         new String[] { MediaStore.Audio.Media.TITLE }, null, null, null);
                 if (cursor != null) {
                     if (cursor.moveToFirst()) {
                         summary = cursor.getString(0);
                     }
                     cursor.close();
                 }
             } catch (SQLiteException sqle) {
                 // Unknown title for the ringtone
             }
         }
         mHandler.sendMessage(mHandler.obtainMessage(msg, summary));
     }

     private void lookupRingtoneNames() {
         new Thread(mRingtoneLookupRunnable).start();
     }

     @Override
     public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
         if (preference == mVibrateWhenRinging) {
             Settings.System.putInt(getContentResolver(), Settings.System.VIBRATE_WHEN_RINGING,
                     mVibrateWhenRinging.isChecked() ? 1 : 0);
         } else if (preference == mDtmfTone) {
             Settings.System.putInt(getContentResolver(), Settings.System.DTMF_TONE_WHEN_DIALING,
                     mDtmfTone.isChecked() ? 1 : 0);

         } else if (preference == mSoundEffects) {
             if (mSoundEffects.isChecked()) {
                 mAudioManager.loadSoundEffects();
             } else {
                 mAudioManager.unloadSoundEffects();
             }
             Settings.System.putInt(getContentResolver(), Settings.System.SOUND_EFFECTS_ENABLED,
                     mSoundEffects.isChecked() ? 1 : 0);

         } else if (preference == mHapticFeedback) {
             Settings.System.putInt(getContentResolver(), Settings.System.HAPTIC_FEEDBACK_ENABLED,
                     mHapticFeedback.isChecked() ? 1 : 0);

         } else if (preference == mLockSounds) {
             Settings.System.putInt(getContentResolver(), Settings.System.LOCKSCREEN_SOUNDS_ENABLED,
                     mLockSounds.isChecked() ? 1 : 0);

         } else if (preference == mMusicFx) {
             // let the framework fire off the intent
             return false;
         } else if (preference == mDockAudioSettings) {
             int dockState = mDockIntent != null
                     ? mDockIntent.getIntExtra(Intent.EXTRA_DOCK_STATE, 0)
                     : Intent.EXTRA_DOCK_STATE_UNDOCKED;

             if (dockState == Intent.EXTRA_DOCK_STATE_UNDOCKED) {
                 showDialog(DIALOG_NOT_DOCKED);
             } else {
                 boolean isBluetooth = mDockIntent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE) != null;

                 if (isBluetooth) {
                     Intent i = new Intent(mDockIntent);
                     i.setAction(DockEventReceiver.ACTION_DOCK_SHOW_UI);
                     i.setClass(getActivity(), DockEventReceiver.class);
                     getActivity().sendBroadcast(i);
                 } else {
                     PreferenceScreen ps = (PreferenceScreen)mDockAudioSettings;
                     Bundle extras = ps.getExtras();
                     extras.putBoolean("checked",
                             Settings.Global.getInt(getContentResolver(),
                                     Settings.Global.DOCK_AUDIO_MEDIA_ENABLED, 0) == 1);
                     super.onPreferenceTreeClick(ps, ps);
                 }
             }
         } else if (preference == mDockSounds) {
             Settings.Global.putInt(getContentResolver(), Settings.Global.DOCK_SOUNDS_ENABLED,
                     mDockSounds.isChecked() ? 1 : 0);
         } else if (preference == mDockAudioMediaEnabled) {
             Settings.Global.putInt(getContentResolver(), Settings.Global.DOCK_AUDIO_MEDIA_ENABLED,
                     mDockAudioMediaEnabled.isChecked() ? 1 : 0);
         }
         return true;
     }

     public boolean onPreferenceChange(Preference preference, Object objValue) {
         final String key = preference.getKey();
         if (KEY_EMERGENCY_TONE.equals(key)) {
             try {
                 int value = Integer.parseInt((String) objValue);
                 Settings.Global.putInt(getContentResolver(),
                         Settings.Global.EMERGENCY_TONE, value);
             } catch (NumberFormatException e) {
                 Log.e(TAG, "could not persist emergency tone setting", e);
             }
         }

         return true;
     }

     @Override
     protected int getHelpResource() {
         return R.string.help_url_sound;
     }

     private boolean needsDockSettings() {
         return getResources().getBoolean(R.bool.has_dock_settings);
     }

     private void initDockSettings() {
         ContentResolver resolver = getContentResolver();

         if (needsDockSettings()) {
             mDockSounds = (CheckBoxPreference) findPreference(KEY_DOCK_SOUNDS);
             mDockSounds.setPersistent(false);
             mDockSounds.setChecked(Settings.Global.getInt(resolver,
                     Settings.Global.DOCK_SOUNDS_ENABLED, 0) != 0);
             mDockAudioSettings = findPreference(KEY_DOCK_AUDIO_SETTINGS);
             mDockAudioSettings.setEnabled(false);
         } else {
             getPreferenceScreen().removePreference(findPreference(KEY_DOCK_CATEGORY));
             getPreferenceScreen().removePreference(findPreference(KEY_DOCK_AUDIO_SETTINGS));
             getPreferenceScreen().removePreference(findPreference(KEY_DOCK_SOUNDS));
             Settings.Global.putInt(resolver, Settings.Global.DOCK_AUDIO_MEDIA_ENABLED, 1);
         }
     }

     private void handleDockChange(Intent intent) {
         if (mDockAudioSettings != null) {
             int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 0);

             boolean isBluetooth =
                     intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE) != null;

             mDockIntent = intent;

             if (dockState != Intent.EXTRA_DOCK_STATE_UNDOCKED) {
                 // remove undocked dialog if currently showing.
                 try {
                     removeDialog(DIALOG_NOT_DOCKED);
                 } catch (IllegalArgumentException iae) {
                     // Maybe it was already dismissed
                 }

                 if (isBluetooth) {
                     mDockAudioSettings.setEnabled(true);
                 } else {
                     if (dockState == Intent.EXTRA_DOCK_STATE_LE_DESK) {
                         ContentResolver resolver = getContentResolver();
                         mDockAudioSettings.setEnabled(true);
                         if (Settings.Global.getInt(resolver,
                                 Settings.Global.DOCK_AUDIO_MEDIA_ENABLED, -1) == -1) {
                             Settings.Global.putInt(resolver,
                                     Settings.Global.DOCK_AUDIO_MEDIA_ENABLED, 0);
                         }
                         mDockAudioMediaEnabled =
                                 (CheckBoxPreference) findPreference(KEY_DOCK_AUDIO_MEDIA_ENABLED);
                         mDockAudioMediaEnabled.setPersistent(false);
                         mDockAudioMediaEnabled.setChecked(
                                 Settings.Global.getInt(resolver,
                                         Settings.Global.DOCK_AUDIO_MEDIA_ENABLED, 0) != 0);
                     } else {
                         mDockAudioSettings.setEnabled(false);
                     }
                 }
             } else {
                 mDockAudioSettings.setEnabled(false);
             }
         }
     }

     @Override
     public Dialog onCreateDialog(int id) {
         if (id == DIALOG_NOT_DOCKED) {
             return createUndockedMessage();
         }
         return null;
     }

     private Dialog createUndockedMessage() {
         final AlertDialog.Builder ab = new AlertDialog.Builder(getActivity());
         ab.setTitle(R.string.dock_not_found_title);
         ab.setMessage(R.string.dock_not_found_text);
         ab.setPositiveButton(android.R.string.ok, null);
         return ab.create();
     }
 }
	/*
	* Copyright (C) 2007 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.settings;

	import com.android.settings.bluetooth.DockEventReceiver;

	import android.app.AlertDialog;
	import android.app.Dialog;
	import android.bluetooth.BluetoothDevice;
	import android.content.BroadcastReceiver;
	import android.content.ContentResolver;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.content.pm.PackageManager;
	import android.content.pm.ResolveInfo;
	import android.database.Cursor;
	import android.database.sqlite.SQLiteException;
	import android.media.AudioManager;
	import android.media.RingtoneManager;
	import android.media.audiofx.AudioEffect;
	import android.net.Uri;
	import android.os.Bundle;
	import android.os.Handler;
	import android.os.Message;
	import android.os.Vibrator;
	import android.preference.CheckBoxPreference;
	import android.preference.ListPreference;
	import android.preference.Preference;
	import android.preference.PreferenceGroup;
	import android.preference.PreferenceScreen;
	import android.provider.MediaStore;
	import android.provider.Settings;
	import android.telephony.TelephonyManager;
	import android.util.Log;

	import java.util.List;

	public class SoundSettings extends SettingsPreferenceFragment implements
	Preference.OnPreferenceChangeListener {
	private static final String TAG = "SoundSettings";

	private static final int DIALOG_NOT_DOCKED = 1;

	/** If there is no setting in the provider, use this. */
	private static final int FALLBACK_EMERGENCY_TONE_VALUE = 0;

	private static final String KEY_VIBRATE = "vibrate_when_ringing";
	private static final String KEY_RING_VOLUME = "ring_volume";
	private static final String KEY_MUSICFX = "musicfx";
	private static final String KEY_DTMF_TONE = "dtmf_tone";
	private static final String KEY_SOUND_EFFECTS = "sound_effects";
	private static final String KEY_HAPTIC_FEEDBACK = "haptic_feedback";
	private static final String KEY_EMERGENCY_TONE = "emergency_tone";
	private static final String KEY_SOUND_SETTINGS = "sound_settings";
	private static final String KEY_LOCK_SOUNDS = "lock_sounds";
	private static final String KEY_RINGTONE = "ringtone";
	private static final String KEY_NOTIFICATION_SOUND = "notification_sound";
	private static final String KEY_CATEGORY_CALLS = "category_calls_and_notification";
	private static final String KEY_DOCK_CATEGORY = "dock_category";
	private static final String KEY_DOCK_AUDIO_SETTINGS = "dock_audio";
	private static final String KEY_DOCK_SOUNDS = "dock_sounds";
	private static final String KEY_DOCK_AUDIO_MEDIA_ENABLED = "dock_audio_media_enabled";

	private static final String[] NEED_VOICE_CAPABILITY = {
	KEY_RINGTONE, KEY_DTMF_TONE, KEY_CATEGORY_CALLS,
	KEY_EMERGENCY_TONE, KEY_VIBRATE
	};

	private static final int MSG_UPDATE_RINGTONE_SUMMARY = 1;
	private static final int MSG_UPDATE_NOTIFICATION_SUMMARY = 2;

	private CheckBoxPreference mVibrateWhenRinging;
	private CheckBoxPreference mDtmfTone;
	private CheckBoxPreference mSoundEffects;
	private CheckBoxPreference mHapticFeedback;
	private Preference mMusicFx;
	private CheckBoxPreference mLockSounds;
	private Preference mRingtonePreference;
	private Preference mNotificationPreference;

	private Runnable mRingtoneLookupRunnable;

	private AudioManager mAudioManager;

	private Preference mDockAudioSettings;
	private CheckBoxPreference mDockSounds;
	private Intent mDockIntent;
	private CheckBoxPreference mDockAudioMediaEnabled;

	private Handler mHandler = new Handler() {
	public void handleMessage(Message msg) {
	switch (msg.what) {
	case MSG_UPDATE_RINGTONE_SUMMARY:
	mRingtonePreference.setSummary((CharSequence) msg.obj);
	break;
	case MSG_UPDATE_NOTIFICATION_SUMMARY:
	mNotificationPreference.setSummary((CharSequence) msg.obj);
	break;
	}
	}
	};

	private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	if (intent.getAction().equals(Intent.ACTION_DOCK_EVENT)) {
	handleDockChange(intent);
	}
	}
	};

	private PreferenceGroup mSoundSettings;

	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	ContentResolver resolver = getContentResolver();
	int activePhoneType = TelephonyManager.getDefault().getCurrentPhoneType();

	mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

	addPreferencesFromResource(R.xml.sound_settings);

	if (TelephonyManager.PHONE_TYPE_CDMA != activePhoneType) {
	// device is not CDMA, do not display CDMA emergency_tone
	getPreferenceScreen().removePreference(findPreference(KEY_EMERGENCY_TONE));
	}

	if (!getResources().getBoolean(R.bool.has_silent_mode)) {
	findPreference(KEY_RING_VOLUME).setDependency(null);
	}

	if (getResources().getBoolean(com.android.internal.R.bool.config_useFixedVolume)) {
	// device with fixed volume policy, do not display volumes submenu
	getPreferenceScreen().removePreference(findPreference(KEY_RING_VOLUME));
	}

	mVibrateWhenRinging = (CheckBoxPreference) findPreference(KEY_VIBRATE);
	mVibrateWhenRinging.setPersistent(false);
	mVibrateWhenRinging.setChecked(Settings.System.getInt(resolver,
	Settings.System.VIBRATE_WHEN_RINGING, 0) != 0);

	mDtmfTone = (CheckBoxPreference) findPreference(KEY_DTMF_TONE);
	mDtmfTone.setPersistent(false);
	mDtmfTone.setChecked(Settings.System.getInt(resolver,
	Settings.System.DTMF_TONE_WHEN_DIALING, 1) != 0);
	mSoundEffects = (CheckBoxPreference) findPreference(KEY_SOUND_EFFECTS);
	mSoundEffects.setPersistent(false);
	mSoundEffects.setChecked(Settings.System.getInt(resolver,
	Settings.System.SOUND_EFFECTS_ENABLED, 1) != 0);
	mHapticFeedback = (CheckBoxPreference) findPreference(KEY_HAPTIC_FEEDBACK);
	mHapticFeedback.setPersistent(false);
	mHapticFeedback.setChecked(Settings.System.getInt(resolver,
	Settings.System.HAPTIC_FEEDBACK_ENABLED, 1) != 0);
	mLockSounds = (CheckBoxPreference) findPreference(KEY_LOCK_SOUNDS);
	mLockSounds.setPersistent(false);
	mLockSounds.setChecked(Settings.System.getInt(resolver,
	Settings.System.LOCKSCREEN_SOUNDS_ENABLED, 1) != 0);

	mRingtonePreference = findPreference(KEY_RINGTONE);
	mNotificationPreference = findPreference(KEY_NOTIFICATION_SOUND);

	Vibrator vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
	if (vibrator == null \|\| !vibrator.hasVibrator()) {
	removePreference(KEY_VIBRATE);
	removePreference(KEY_HAPTIC_FEEDBACK);
	}

	if (TelephonyManager.PHONE_TYPE_CDMA == activePhoneType) {
	ListPreference emergencyTonePreference =
	(ListPreference) findPreference(KEY_EMERGENCY_TONE);
	emergencyTonePreference.setValue(String.valueOf(Settings.Global.getInt(
	resolver, Settings.Global.EMERGENCY_TONE, FALLBACK_EMERGENCY_TONE_VALUE)));
	emergencyTonePreference.setOnPreferenceChangeListener(this);
	}

	mSoundSettings = (PreferenceGroup) findPreference(KEY_SOUND_SETTINGS);

	mMusicFx = mSoundSettings.findPreference(KEY_MUSICFX);
	Intent i = new Intent(AudioEffect.ACTION_DISPLAY_AUDIO_EFFECT_CONTROL_PANEL);
	PackageManager p = getPackageManager();
	List<ResolveInfo> ris = p.queryIntentActivities(i, PackageManager.GET_DISABLED_COMPONENTS);
	if (ris.size() <= 2) {
	// no need to show the item if there is no choice for the user to make
	// note: the built in musicfx panel has two activities (one being a
	// compatibility shim that launches either the other activity, or a
	// third party one), hence the check for <=2. If the implementation
	// of the compatbility layer changes, this check may need to be updated.
	mSoundSettings.removePreference(mMusicFx);
	}

	if (!Utils.isVoiceCapable(getActivity())) {
	for (String prefKey : NEED_VOICE_CAPABILITY) {
	Preference pref = findPreference(prefKey);
	if (pref != null) {
	getPreferenceScreen().removePreference(pref);
	}
	}
	}

	mRingtoneLookupRunnable = new Runnable() {
	public void run() {
	if (mRingtonePreference != null) {
	updateRingtoneName(RingtoneManager.TYPE_RINGTONE, mRingtonePreference,
	MSG_UPDATE_RINGTONE_SUMMARY);
	}
	if (mNotificationPreference != null) {
	updateRingtoneName(RingtoneManager.TYPE_NOTIFICATION, mNotificationPreference,
	MSG_UPDATE_NOTIFICATION_SUMMARY);
	}
	}
	};

	initDockSettings();
	}

	@Override
	public void onResume() {
	super.onResume();

	lookupRingtoneNames();

	IntentFilter filter = new IntentFilter(Intent.ACTION_DOCK_EVENT);
	getActivity().registerReceiver(mReceiver, filter);
	}

	@Override
	public void onPause() {
	super.onPause();

	getActivity().unregisterReceiver(mReceiver);
	}

	private void updateRingtoneName(int type, Preference preference, int msg) {
	if (preference == null) return;
	Context context = getActivity();
	if (context == null) return;
	Uri ringtoneUri = RingtoneManager.getActualDefaultRingtoneUri(context, type);
	CharSequence summary = context.getString(com.android.internal.R.string.ringtone_unknown);
	// Is it a silent ringtone?
	if (ringtoneUri == null) {
	summary = context.getString(com.android.internal.R.string.ringtone_silent);
	} else {
	// Fetch the ringtone title from the media provider
	try {
	Cursor cursor = context.getContentResolver().query(ringtoneUri,
	new String[] { MediaStore.Audio.Media.TITLE }, null, null, null);
	if (cursor != null) {
	if (cursor.moveToFirst()) {
	summary = cursor.getString(0);
	}
	cursor.close();
	}
	} catch (SQLiteException sqle) {
	// Unknown title for the ringtone
	}
	}
	mHandler.sendMessage(mHandler.obtainMessage(msg, summary));
	}

	private void lookupRingtoneNames() {
	new Thread(mRingtoneLookupRunnable).start();
	}

	@Override
	public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
	if (preference == mVibrateWhenRinging) {
	Settings.System.putInt(getContentResolver(), Settings.System.VIBRATE_WHEN_RINGING,
	mVibrateWhenRinging.isChecked() ? 1 : 0);
	} else if (preference == mDtmfTone) {
	Settings.System.putInt(getContentResolver(), Settings.System.DTMF_TONE_WHEN_DIALING,
	mDtmfTone.isChecked() ? 1 : 0);

	} else if (preference == mSoundEffects) {
	if (mSoundEffects.isChecked()) {
	mAudioManager.loadSoundEffects();
	} else {
	mAudioManager.unloadSoundEffects();
	}
	Settings.System.putInt(getContentResolver(), Settings.System.SOUND_EFFECTS_ENABLED,
	mSoundEffects.isChecked() ? 1 : 0);

	} else if (preference == mHapticFeedback) {
	Settings.System.putInt(getContentResolver(), Settings.System.HAPTIC_FEEDBACK_ENABLED,
	mHapticFeedback.isChecked() ? 1 : 0);

	} else if (preference == mLockSounds) {
	Settings.System.putInt(getContentResolver(), Settings.System.LOCKSCREEN_SOUNDS_ENABLED,
	mLockSounds.isChecked() ? 1 : 0);

	} else if (preference == mMusicFx) {
	// let the framework fire off the intent
	return false;
	} else if (preference == mDockAudioSettings) {
	int dockState = mDockIntent != null
	? mDockIntent.getIntExtra(Intent.EXTRA_DOCK_STATE, 0)
	: Intent.EXTRA_DOCK_STATE_UNDOCKED;

	if (dockState == Intent.EXTRA_DOCK_STATE_UNDOCKED) {
	showDialog(DIALOG_NOT_DOCKED);
	} else {
	boolean isBluetooth = mDockIntent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE) != null;

	if (isBluetooth) {
	Intent i = new Intent(mDockIntent);
	i.setAction(DockEventReceiver.ACTION_DOCK_SHOW_UI);
	i.setClass(getActivity(), DockEventReceiver.class);
	getActivity().sendBroadcast(i);
	} else {
	PreferenceScreen ps = (PreferenceScreen)mDockAudioSettings;
	Bundle extras = ps.getExtras();
	extras.putBoolean("checked",
	Settings.Global.getInt(getContentResolver(),
	Settings.Global.DOCK_AUDIO_MEDIA_ENABLED, 0) == 1);
	super.onPreferenceTreeClick(ps, ps);
	}
	}
	} else if (preference == mDockSounds) {
	Settings.Global.putInt(getContentResolver(), Settings.Global.DOCK_SOUNDS_ENABLED,
	mDockSounds.isChecked() ? 1 : 0);
	} else if (preference == mDockAudioMediaEnabled) {
	Settings.Global.putInt(getContentResolver(), Settings.Global.DOCK_AUDIO_MEDIA_ENABLED,
	mDockAudioMediaEnabled.isChecked() ? 1 : 0);
	}
	return true;
	}

	public boolean onPreferenceChange(Preference preference, Object objValue) {
	final String key = preference.getKey();
	if (KEY_EMERGENCY_TONE.equals(key)) {
	try {
	int value = Integer.parseInt((String) objValue);
	Settings.Global.putInt(getContentResolver(),
	Settings.Global.EMERGENCY_TONE, value);
	} catch (NumberFormatException e) {
	Log.e(TAG, "could not persist emergency tone setting", e);
	}
	}

	return true;
	}

	@Override
	protected int getHelpResource() {
	return R.string.help_url_sound;
	}

	private boolean needsDockSettings() {
	return getResources().getBoolean(R.bool.has_dock_settings);
	}

	private void initDockSettings() {
	ContentResolver resolver = getContentResolver();

	if (needsDockSettings()) {
	mDockSounds = (CheckBoxPreference) findPreference(KEY_DOCK_SOUNDS);
	mDockSounds.setPersistent(false);
	mDockSounds.setChecked(Settings.Global.getInt(resolver,
	Settings.Global.DOCK_SOUNDS_ENABLED, 0) != 0);
	mDockAudioSettings = findPreference(KEY_DOCK_AUDIO_SETTINGS);
	mDockAudioSettings.setEnabled(false);
	} else {
	getPreferenceScreen().removePreference(findPreference(KEY_DOCK_CATEGORY));
	getPreferenceScreen().removePreference(findPreference(KEY_DOCK_AUDIO_SETTINGS));
	getPreferenceScreen().removePreference(findPreference(KEY_DOCK_SOUNDS));
	Settings.Global.putInt(resolver, Settings.Global.DOCK_AUDIO_MEDIA_ENABLED, 1);
	}
	}

	private void handleDockChange(Intent intent) {
	if (mDockAudioSettings != null) {
	int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 0);

	boolean isBluetooth =
	intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE) != null;

	mDockIntent = intent;

	if (dockState != Intent.EXTRA_DOCK_STATE_UNDOCKED) {
	// remove undocked dialog if currently showing.
	try {
	removeDialog(DIALOG_NOT_DOCKED);
	} catch (IllegalArgumentException iae) {
	// Maybe it was already dismissed
	}

	if (isBluetooth) {
	mDockAudioSettings.setEnabled(true);
	} else {
	if (dockState == Intent.EXTRA_DOCK_STATE_LE_DESK) {
	ContentResolver resolver = getContentResolver();
	mDockAudioSettings.setEnabled(true);
	if (Settings.Global.getInt(resolver,
	Settings.Global.DOCK_AUDIO_MEDIA_ENABLED, -1) == -1) {
	Settings.Global.putInt(resolver,
	Settings.Global.DOCK_AUDIO_MEDIA_ENABLED, 0);
	}
	mDockAudioMediaEnabled =
	(CheckBoxPreference) findPreference(KEY_DOCK_AUDIO_MEDIA_ENABLED);
	mDockAudioMediaEnabled.setPersistent(false);
	mDockAudioMediaEnabled.setChecked(
	Settings.Global.getInt(resolver,
	Settings.Global.DOCK_AUDIO_MEDIA_ENABLED, 0) != 0);
	} else {
	mDockAudioSettings.setEnabled(false);
	}
	}
	} else {
	mDockAudioSettings.setEnabled(false);
	}
	}
	}

	@Override
	public Dialog onCreateDialog(int id) {
	if (id == DIALOG_NOT_DOCKED) {
	return createUndockedMessage();
	}
	return null;
	}

	private Dialog createUndockedMessage() {
	final AlertDialog.Builder ab = new AlertDialog.Builder(getActivity());
	ab.setTitle(R.string.dock_not_found_title);
	ab.setMessage(R.string.dock_not_found_text);
	ab.setPositiveButton(android.R.string.ok, null);
	return ab.create();
	}
	}