/*******************************************************************************
* Copyright 2011 The Regents of the University of California
*
* 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 org.ohmage.triggers.types.location;
import org.ohmage.R;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;
import android.preference.PreferenceScreen;
import android.preference.Preference.OnPreferenceChangeListener;
/*
* Preference activity to manage the settings of location tracing.
* Currently, two settings are provided
* - Enable/disable tracing
* - Enable/disable 'upload always'
*
* When 'upload always' is enabled, the LocTrigService always uploads
* the trace at the end of every duty cycle even if the user location
* has not changed. If 'upload always' is disabled, the traces are
* uploaded according to the parameters defined in LocTrigConfig
*/
public class LocTrigTracingSettActivity extends PreferenceActivity
implements OnPreferenceChangeListener {
public static final String PREF_KEY_TRACING_STATUS =
"enable_location_tracing";
public static final String PREF_KEY_UPLOAD_ALWAYS =
"enable_trace_upload_always";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.trig_loc_trace_preferences);
PreferenceScreen screen = getPreferenceScreen();
int prefCount = screen.getPreferenceCount();
for(int i = 0; i < prefCount; i++) {
screen.getPreference(i).setOnPreferenceChangeListener(this);
}
}
@Override
public boolean onPreferenceChange(Preference pref, Object val) {
//Whenever any of the preference value changes, notify
//the service to refresh these values
Intent i = new Intent(this, LocTrigService.class);
i.setAction(LocTrigService.ACTION_UPDATE_TRACING_STATUS);
startService(i);
return true;
}
public static void resetAllSettings(Context context) {
SharedPreferences prefs =
PreferenceManager.getDefaultSharedPreferences(context);
Editor editor = prefs.edit();
editor.remove(PREF_KEY_TRACING_STATUS);
editor.remove(PREF_KEY_UPLOAD_ALWAYS);
editor.commit();
}
}