PrefsActivity.java

package edu.fsu.cs.contextprovider;

import edu.fsu.cs.contextprovider.data.ContextConstants;
import android.app.AlarmManager;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.PendingIntent;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.os.Bundle;
import android.os.SystemClock;
import android.preference.CheckBoxPreference;
import android.preference.EditTextPreference;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.preference.PreferenceManager;
import android.preference.PreferenceScreen;
import android.preference.Preference.OnPreferenceClickListener;
import android.text.method.DigitsKeyListener;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;

public class PrefsActivity extends PreferenceActivity implements OnSharedPreferenceChangeListener {
	private static final String TAG = "edu.fsu.cs.PrefsActivity";
	private static final boolean DEBUG = true;
	
	private static final int MENU_ABOUT_ID = Menu.FIRST;
	private static final int ABOUT_DIALOG = 0;
	private static final int DIALOG_ABOUT = 0;		

	private SharedPreferences prefs;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		
		getPreferenceManager().setSharedPreferencesName(ContextConstants.CONTEXT_PREFS);
		addPreferencesFromResource(R.xml.prefs);
		prefs = getSharedPreferences(ContextConstants.CONTEXT_PREFS, MODE_PRIVATE);
//      PreferenceManager.setDefaultValues(this, ContextConstants.CONTEXT_PREFS, MODE_WORLD_READABLE, R.xml.prefs, false);
//      PreferenceManager.setDefaultValues(PrefsActivity.this, R.xml.prefs, false);
//		prefs = getPreferenceScreen().getSharedPreferences();
//		prefs = PreferenceManager.getDefaultSharedPreferences(this);
		prefs.registerOnSharedPreferenceChangeListener(this);
	}

	@Override
	protected void onDestroy() {
		// TODO Auto-generated method stub
		super.onDestroy();
		prefs.unregisterOnSharedPreferenceChangeListener(this);
//		Intent intent = new Intent(ContextConstants.CONTEXT_RESTART_INTENT);
//		sendBroadcast(intent);
	}


	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		boolean result = super.onCreateOptionsMenu(menu);
		menu.add(0, MENU_ABOUT_ID, 0, "About").setIcon(android.R.drawable.ic_menu_info_details);
		return result;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		case MENU_ABOUT_ID:
			showDialog(ABOUT_DIALOG);
			return true;
		}
		return super.onOptionsItemSelected(item);
	}

	@Override
	protected Dialog onCreateDialog(int id) {
		Dialog dialog;
		switch (id) {
		case DIALOG_ABOUT:
			dialog = getAboutBox();
			break;

		default:
			dialog = null;
		}
		return dialog;
	}

	private AlertDialog getAboutBox() {
		String title = getString(R.string.app_name) + " build " + getVersion(this);

		return new AlertDialog.Builder(PrefsActivity.this).setTitle(title).setView(View.inflate(this, R.layout.about, null)).setIcon(R.drawable.context64).setPositiveButton("OK", null).create();

	}

	public static String getVersion(Context context) {
		String version = "1.0";
		try {
			PackageInfo pi = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
			version = pi.versionName;
		} catch (PackageManager.NameNotFoundException e) {
			Log.e(TAG, "Package name not found", e);
		}
		return version;
	}

	@Override
	public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
//	    Preference pref = findPreference(key);
//	    if (pref instanceof ListPreference) {
//	        ListPreference listPref = (ListPreference) pref;
//	        pref.setSummary(listPref.getEntry());
//	    }
        if (key.equals(ContextConstants.PREFS_ACCURACY_POPUP_ENABLED) || key.equals(ContextConstants.PREFS_ACCURACY_POPUP_FREQ)) {
    		if (DEBUG) {
    			Toast.makeText(this, "ACCURACY_POPUP changed", Toast.LENGTH_SHORT).show();
    		}
        	
        	boolean accuracyPopupEnabled = prefs.getBoolean(ContextConstants.PREFS_ACCURACY_POPUP_ENABLED, true);
//        	int accuracyPopupPeriod = prefs.getInt(ContextConstants.PREFS_ACCURACY_POPUP_FREQ, 45);
        	String accuracyPopupPeriod = prefs.getString(ContextConstants.PREFS_ACCURACY_POPUP_FREQ, "45");
        	int period = Integer.parseInt(accuracyPopupPeriod);
        	
        	if (DEBUG) {
        		Log.d(TAG, "accuracyPopupPeriod: " + accuracyPopupPeriod + "  period: " + period);
        	}
        	
        	
        	AlarmManager manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
			Intent intent = new Intent(getBaseContext(), edu.fsu.cs.contextprovider.wakeup.WakeupAlarmReceiver.class);
			PendingIntent pi = PendingIntent.getBroadcast(getBaseContext(), 0, intent, 0);
        	
        	if (accuracyPopupEnabled) {
        		manager.cancel(pi);
    			manager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 10000, period * 1000, pi);
        	} else {
        		manager.cancel(pi);
        	}
        }	    	    	    
	}
	
//	private void enabled(final boolean enable) {
//	String dialogTitle;
//	if (enable) {
//		dialogTitle = getString(R.string.enable_dialog_msg);
//	} else {
//		dialogTitle = getString(R.string.disable_dialog_msg);
//	}
//	new AlertDialog.Builder(this).setIcon(android.R.drawable.ic_dialog_alert).setTitle(dialogTitle).setPositiveButton(getString(R.string.yes), new DialogInterface.OnClickListener() {
//		public void onClick(DialogInterface dialog, int whichButton) {
//			// enable monitor here
//		}
//	}).setNegativeButton(getString(R.string.no), new DialogInterface.OnClickListener() {
//		public void onClick(DialogInterface dialog, int whichButton) {
//			// Do nothing
//		}
//	}).show();
//}

}