/*
* Copyright 2012 Google Inc.
*
* 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.google.android.apps.mytracks.settings;
import com.google.android.apps.mytracks.Constants;
import com.google.android.apps.mytracks.io.backup.BackupPreferencesListener;
import com.google.android.apps.mytracks.util.ApiAdapterFactory;
import com.google.android.maps.mytracks.R;
import android.content.Context;
import android.os.Bundle;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceChangeListener;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;
import android.speech.tts.TextToSpeech;
import android.view.MenuItem;
/**
* An abstract activity for all the settings activities.
*
* @author Jimmy Shih
*/
public class AbstractSettingsActivity extends PreferenceActivity {
private BackupPreferencesListener backupPreferencesListener;
@SuppressWarnings("deprecation")
@Override
protected void onCreate(Bundle bundle) {
super.onCreate(bundle);
setVolumeControlStream(TextToSpeech.Engine.DEFAULT_STREAM);
ApiAdapterFactory.getApiAdapter().configureActionBarHomeAsUp(this);
PreferenceManager preferenceManager = getPreferenceManager();
preferenceManager.setSharedPreferencesName(Constants.SETTINGS_NAME);
preferenceManager.setSharedPreferencesMode(Context.MODE_PRIVATE);
// Set up automatic preferences backup
backupPreferencesListener = new BackupPreferencesListener(this);
preferenceManager.getSharedPreferences()
.registerOnSharedPreferenceChangeListener(backupPreferencesListener);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() != android.R.id.home) {
return super.onOptionsItemSelected(item);
}
finish();
return true;
}
@SuppressWarnings("deprecation")
@Override
protected void onDestroy() {
super.onDestroy();
PreferenceManager preferenceManager = getPreferenceManager();
preferenceManager.getSharedPreferences()
.unregisterOnSharedPreferenceChangeListener(backupPreferencesListener);
}
/**
* Configures a list preference.
*
* @param listPreference the list preference
* @param summary the summary array
* @param options the options array
* @param values the values array
* @param value the value
* @param listener optional listener
*/
protected void configureListPreference(ListPreference listPreference, final String[] summary,
final String[] options, final String[] values, String value,
final OnPreferenceChangeListener listener) {
listPreference.setEntryValues(values);
listPreference.setEntries(options);
listPreference.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
@Override
public boolean onPreferenceChange(Preference pref, Object newValue) {
updatePreferenceSummary(pref, summary, values, (String) newValue);
if (listener != null) {
listener.onPreferenceChange(pref, newValue);
}
return true;
}
});
updatePreferenceSummary(listPreference, summary, values, value);
if (listener != null) {
listener.onPreferenceChange(listPreference, value);
}
}
/**
* Update the preference summary.
*
* @param preference the preference
* @param summary the summary array
* @param values the values array
* @param value the value
*/
private void updatePreferenceSummary(
Preference preference, String[] summary, String[] values, String value) {
int index = getIndex(values, value);
if (index == -1) {
preference.setSummary(R.string.value_unknown);
} else {
preference.setSummary(summary[index]);
}
}
/**
* Get the array index for a value.
*
* @param values the array
* @param value the value
*/
private int getIndex(String[] values, String value) {
for (int i = 0; i < values.length; i++) {
if (value.equals(values[i])) {
return i;
}
}
return -1;
}
}