GMAndroid/app/src/main/java/com/ivalentin/margolariak/MainActivity.java

package com.ivalentin.margolariak;

import java.math.BigInteger;
import java.security.SecureRandom;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;

import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.app.Dialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Typeface;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.HorizontalScrollView;
import android.widget.ImageView;
import android.widget.PopupMenu;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.os.Handler;

/**
 * The main Activity of the app. It's actually the only activity, and it loads other fragments.
 * 
 * @author Iñigo Valentin
 *
 */
public class MainActivity extends Activity{

	//Alarm to get location and notifications.
	private AlarmReceiver notificationAlarm;

	//The menu entries
	private RelativeLayout menuItem[];
	private TextView menuText[];
	private ImageView menuImage[];

	//Handler to periodically check for location updates
	private final Handler locationHandler = new Handler();
	// Code to check for location updates
	private final Runnable checkForLocation = new Runnable() {
		@Override
		public void run() {

			//Get location page and parse it
			boolean result = false;
			FetchURL fu = new FetchURL();
			fu.Run(GM.SERVER + "/app/location.php");
			String lat = "", lon = "";
			String o = fu.getOutput().toString();
			Log.d("Location", "Fetched location page");
			if (o.contains("<location>none</location>"))
				result = false;
			if (o.contains("<lat>") && o.contains("<lon>")){
				lat = o.substring(o.indexOf("<lat>") + 5, o.indexOf("</lat>"));
				lon = o.substring(o.indexOf("<lon>") + 5, o.indexOf("</lon>"));
				result = true;
			}

			SharedPreferences settings = getSharedPreferences(GM.PREF, Context.MODE_PRIVATE);
			SharedPreferences.Editor editor = settings.edit();
			if (result){
				editor.putLong(GM.PREF_GM_LATITUDE, Double.doubleToLongBits(Double.parseDouble(lat)));
				editor.putLong(GM.PREF_GM_LONGITUDE, Double.doubleToLongBits(Double.parseDouble(lon)));
				editor.putString(GM.PREF_GM_LOCATION, new SimpleDateFormat("yyyyMMddHHmmss", Locale.US).format(Calendar.getInstance().getTime()));

				//Show menu entry
				if (menuItem[1] != null){
					menuItem[1].setVisibility(View.VISIBLE);
				}
			}
			else{
				editor.putString(GM.PREF_GM_LOCATION, GM.DEFAULT_PREF_GM_LOCATION);
				if (menuItem[1] != null){
					menuItem[1].setVisibility(View.GONE);
				}
			}
			editor.apply();

			//Repeat this the same runnable code block again another th specified interval
			locationHandler.postDelayed(checkForLocation, GM.INTERVAL_LOCATION);
		}
	};

	//Not referenced in code.
	public void showMenu(View v) {
		PopupMenu popup = new PopupMenu(this, v);
		MenuInflater inflater = popup.getMenuInflater();
		inflater.inflate(R.menu.menu, popup.getMenu());

		popup.getMenu().getItem(0).setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener(){
			@Override
			public boolean onMenuItemClick(MenuItem item) {
				Intent intent = new Intent(MainActivity.this, AboutActivity.class);
				startActivity(intent);
				return true;
			}
		});

		popup.getMenu().getItem(1).setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener(){
			@Override
			public boolean onMenuItemClick(MenuItem item) {
				Intent intent = new Intent(MainActivity.this, SponsorActivity.class);
				startActivity(intent);
				return true;
			}
		});

		popup.getMenu().getItem(2).setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener(){
			@Override
			public boolean onMenuItemClick(MenuItem item) {
				Intent intent = new Intent(MainActivity.this, SettingsActivity.class);
				startActivity(intent);
				return true;
			}
		});

		popup.show();
	}



	/**
	 * Loads a section in the main screen.
	 * 
	 * @param section Section identifier {@see GM}
	 */
	public void loadSection (byte section){
		FragmentManager fm = MainActivity.this.getFragmentManager();
		FragmentTransaction ft = fm.beginTransaction();
		Fragment fragment = null;
		String title = "";
		Bundle bundle = new Bundle();

		//Reset all tabs to it's original state
		for (int i = 0; i < 6; i ++){
			menuText[i].setTypeface(null, Typeface.NORMAL);
			menuImage[i].requestLayout();
			menuImage[i].getLayoutParams().height = 2;
		}

		switch (section){
			case GM.SECTION_HOME:
				fragment = new HomeLayout();
				title = getString(R.string.menu_home);
				menuText[0].setTypeface(null, Typeface.BOLD);
				menuImage[0].getLayoutParams().height = 8;
				break;

			case GM.SECTION_LOCATION:
				fragment = new LocationLayout();
				title = getString(R.string.menu_location);
				menuText[1].setTypeface(null, Typeface.BOLD);
				menuImage[1].getLayoutParams().height = 8;
				break;

			case GM.SECTION_LABLANCA:
				//Get settings
				SharedPreferences preferences = getSharedPreferences(GM.PREF, Context.MODE_PRIVATE);
				if (preferences.getInt(GM.PREF_DB_FESTIVALS, 0) == 1){
					fragment = new LablancaLayout();
				}
				else{
					fragment = new LablancaNoFestivalsLayout();
				}
				title = getString(R.string.menu_lablanca);
				menuText[2].setTypeface(null, Typeface.BOLD);
				menuImage[2].getLayoutParams().height = 8;
				break;

			case GM.SECTION_LABLANCA_SCHEDULE:
				fragment = new ScheduleLayout();
				bundle.putInt(GM.SCHEDULE, GM.SECTION_LABLANCA_SCHEDULE);
				fragment.setArguments(bundle);
				title = getString(R.string.menu_lablanca_schedule);
				menuText[2].setTypeface(null, Typeface.BOLD);
				menuImage[2].getLayoutParams().height = 8;
				break;

			case GM.SECTION_LABLANCA_GM_SCHEDULE:
				fragment = new ScheduleLayout();
				bundle.putInt(GM.SCHEDULE, GM.SECTION_LABLANCA_GM_SCHEDULE);
				fragment.setArguments(bundle);
				title = getString(R.string.menu_lablanca_gm_schedule);
				menuText[2].setTypeface(null, Typeface.BOLD);
				menuImage[2].getLayoutParams().height = 8;
				break;

			case GM.SECTION_ACTIVITIES:
				fragment = new ActivityLayout();
				title = getString(R.string.menu_activities);
				menuText[3].setTypeface(null, Typeface.BOLD);
				menuImage[3].getLayoutParams().height = 8;
				break;

			case GM.SECTION_BLOG:
				fragment = new BlogLayout();
				title = getString(R.string.menu_blog);
				menuText[4].setTypeface(null, Typeface.BOLD);
				menuImage[4].getLayoutParams().height = 8;
				break;

			case GM.SECTION_GALLERY:
				fragment = new GalleryLayout();
				title = getString(R.string.menu_blog);
				menuText[5].setTypeface(null, Typeface.BOLD);
				menuImage[5].getLayoutParams().height = 8;
				break;
		}
		
		//Replace the fragment.
		ft.replace(R.id.activity_main_content_fragment, fragment);
		//ft.addToBackStack(title);
		ft.commit();
		setSectionTitle(title);
	}

	/**
	 * Sets the title of the current section.
	 * 
	 * @param title The title of the current section.
	 */
	public void setSectionTitle(String title){
		TextView tvTitle = (TextView) findViewById(R.id.activity_main_content_title);
		tvTitle.setText(title);
	}

	/**
	 * Runs when the activity is created. 
	 * 
	 * @param savedInstanceState Saved state of the activity.
	 * 
	 * @see android.app.Activity#onCreate(android.os.Bundle)
	 */
	@SuppressWarnings("deprecation, ConstantConditions")
	@Override
	protected void onCreate(Bundle savedInstanceState) {

	    //Get intent extras
	    String action = getIntent().getStringExtra(GM.EXTRA_ACTION);
	    String actionText = getIntent().getStringExtra(GM.EXTRA_TEXT);
	    String actionTitle = getIntent().getStringExtra(GM.EXTRA_TITLE);

		//Set an alarm for notifications..
		//Wait a little
		final Intent intent = this.getIntent();
		final Context context = this;

		Thread t = new Thread() {

			@Override
			public void run() {
				try {
					Thread.sleep(20000);
					runOnUiThread(new Runnable() {
						@Override
						public void run() {
							notificationAlarm = new AlarmReceiver();
							notificationAlarm.setAlarm(context);
							notificationAlarm.onReceive(context, intent);
						}
					});
				} catch (InterruptedException e) {
					Log.e("Sleep interrupted", e.toString());
				}
			}
		};

		t.start();

		//Remove title bar.
	    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
	    super.onCreate(savedInstanceState);

	    //Set layout.
		setContentView(R.layout.activity_main);

		//Assign menu items
		menuItem = new RelativeLayout[6];
		menuItem[0] = (RelativeLayout) findViewById(R.id.rl_menu_home);
		menuItem[1] = (RelativeLayout) findViewById(R.id.rl_menu_location);
		menuItem[2] = (RelativeLayout) findViewById(R.id.rl_menu_lablanca);
		menuItem[3] = (RelativeLayout) findViewById(R.id.rl_menu_activities);
		menuItem[4] = (RelativeLayout) findViewById(R.id.rl_menu_blog);
		menuItem[5] = (RelativeLayout) findViewById(R.id.rl_menu_gallery);
		menuText = new TextView[6];
		menuText[0] = (TextView) menuItem[0].findViewById(R.id.tv_menu_home);
		menuText[1] = (TextView) menuItem[1].findViewById(R.id.tv_menu_location);
		menuText[2] = (TextView) menuItem[2].findViewById(R.id.tv_menu_lablanca);
		menuText[3] = (TextView) menuItem[3].findViewById(R.id.tv_menu_activities);
		menuText[4] = (TextView) menuItem[4].findViewById(R.id.tv_menu_blog);
		menuText[5] = (TextView) menuItem[5].findViewById(R.id.tv_menu_gallery);
		menuImage = new ImageView[6];
		menuImage[0] = (ImageView) menuItem[0].findViewById(R.id.iv_menu_home);
		menuImage[1] = (ImageView) menuItem[1].findViewById(R.id.iv_menu_location);
		menuImage[2] = (ImageView) menuItem[2].findViewById(R.id.iv_menu_lablanca);
		menuImage[3] = (ImageView) menuItem[3].findViewById(R.id.iv_menu_activities);
		menuImage[4] = (ImageView) menuItem[4].findViewById(R.id.iv_menu_blog);
		menuImage[5] = (ImageView) menuItem[5].findViewById(R.id.iv_menu_gallery);

		//Remove scrollbars from the sections menu
		HorizontalScrollView svMenu = (HorizontalScrollView) findViewById(R.id.sv_menu);
		svMenu.setHorizontalScrollBarEnabled(false);

		//Set click listers for menu items
		menuItem[0].setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) { loadSection(GM.SECTION_HOME); }
		});
		menuItem[1].setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) { loadSection(GM.SECTION_LOCATION); }
		});
		menuItem[2].setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) { loadSection(GM.SECTION_LABLANCA); }
		});
		menuItem[3].setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) { loadSection(GM.SECTION_ACTIVITIES); }
		});
		menuItem[4].setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) { loadSection(GM.SECTION_BLOG); }
		});
		menuItem[5].setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) { loadSection(GM.SECTION_GALLERY); }
		});

		//Get preferences
		SharedPreferences preferences = getSharedPreferences(GM.PREF, Context.MODE_PRIVATE);

		//TODO: Read preferences. If there is a recent location, show the menu entry

		//If the user code is not set, generate one
		if (preferences.getString(GM.USER_CODE, "").length() == 0){
			SecureRandom random = new SecureRandom();
			String newCode = new BigInteger(130, random).toString(32).substring(0, 16);
			SharedPreferences.Editor editor = preferences.edit();
			editor.putString(GM.USER_CODE, newCode);
			editor.apply();
		}
		
		//Cerate database if it's not already created
		createDatabase();

		
		//If its the first time
		if (preferences.getInt(GM.PREF_DB_VERSION, GM.DEFAULT_PREF_DB_VERSION) == GM.DEFAULT_PREF_DB_VERSION){
			initialSync();
		}
		//If t's not the first time
		else{
			//Sync db
			sync();
			
			//Load initial section
			loadSection(GM.SECTION_HOME);
			
			//If the intent had extras (from notifications), do something
			if (actionText != null){
				TextView tvDialogTitle, tvDialogText;
				Button btDialogClose, btDialogAction;
				Drawable dialogIcon;
				if (actionTitle != null){
					
					//Create a dialog
					final Dialog dialog = new Dialog(this);
					
					//Set up dialog window
					dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
					dialog.setContentView(R.layout.dialog_notification);
					
					//Set title
					tvDialogTitle = (TextView) dialog.findViewById(R.id.tv_dialog_notification_title);
					tvDialogTitle.setText(actionTitle);
					
					//Set text
					tvDialogText = (TextView) dialog.findViewById(R.id.tv_dialog_notification_text);
					tvDialogText.setText(actionText);
					
					//Set close button
					btDialogClose = (Button) dialog.findViewById(R.id.bt_dialog_notification_close);
					btDialogClose.setOnClickListener(new OnClickListener() {
		    			@Override
		    			public void onClick(View v) {
		    				dialog.dismiss();
		    			}
		    		});

					//Set the icon
					dialogIcon = getResources().getDrawable(R.drawable.ic_launcher);
					if (dialogIcon != null) {
						dialogIcon.setBounds(0, 0, (int) (tvDialogTitle.getTextSize() * 1.4), (int) (tvDialogTitle.getTextSize() * 1.4));
					}
					tvDialogTitle.setCompoundDrawables(dialogIcon, null, null, null);
					tvDialogTitle.setCompoundDrawablePadding(20);

					//Get preferences
					int festivals = preferences.getInt(GM.PREF_DB_FESTIVALS, 0);

					//Set the action button
					btDialogAction = (Button) dialog.findViewById(R.id.bt_dialog_notification_action);
					if (action != null){
						switch (action) {

							case GM.EXTRA_ACTION_LABLANCA:

								//Set up the action button
								btDialogAction.setVisibility(View.VISIBLE);
								btDialogAction.setText(this.getApplicationContext().getString(R.string.notification_action_lablanca));
								btDialogAction.setOnClickListener(new OnClickListener() {
									@Override
									public void onClick(View v) {
										dialog.dismiss();
										loadSection(GM.SECTION_LABLANCA);
									}
								});
								break;

							case GM.EXTRA_ACTION_LOCATION:

								if (!preferences.getString(GM.PREF_GM_LOCATION, GM.DEFAULT_PREF_GM_LOCATION).equals(GM.DEFAULT_PREF_GM_LOCATION)) {
									//Set up the action button if location is reported
									btDialogAction.setVisibility(View.VISIBLE);
									btDialogAction.setText(this.getApplicationContext().getString(R.string.notification_action_location));
									btDialogAction.setOnClickListener(new OnClickListener() {
										@Override
										public void onClick(View v) {
											dialog.dismiss();
											loadSection(GM.SECTION_LOCATION);
										}
									});

								}
								break;

							case GM.EXTRA_ACTION_BLOG:

								//Set up the action button
								btDialogAction.setVisibility(View.VISIBLE);
								btDialogAction.setText(this.getApplicationContext().getString(R.string.notification_action_blog));
								btDialogAction.setOnClickListener(new OnClickListener() {
									@Override
									public void onClick(View v) {
										dialog.dismiss();
										loadSection(GM.SECTION_BLOG);
									}
								});
								break;

							case GM.EXTRA_ACTION_ACTIVITIES:

								//Set up the action button
								btDialogAction.setVisibility(View.VISIBLE);
								btDialogAction.setText(this.getApplicationContext().getString(R.string.notification_action_activities));
								btDialogAction.setOnClickListener(new OnClickListener() {
									@Override
									public void onClick(View v) {
										dialog.dismiss();
										loadSection(GM.SECTION_ACTIVITIES);
									}
								});
								break;

							case GM.EXTRA_ACTION_GALLERY:

								//Set up the action button
								btDialogAction.setVisibility(View.VISIBLE);
								btDialogAction.setText(this.getApplicationContext().getString(R.string.notification_action_gallery));
								btDialogAction.setOnClickListener(new OnClickListener() {
									@Override
									public void onClick(View v) {
										dialog.dismiss();
										loadSection(GM.SECTION_GALLERY);
									}
								});
								break;

							case GM.EXTRA_ACTION_GMSCHEDULE:

								if (festivals == 1) {
									//Set up the action button
									btDialogAction.setVisibility(View.VISIBLE);
									btDialogAction.setText(this.getApplicationContext().getString(R.string.notification_action_gmschedule));
									btDialogAction.setOnClickListener(new OnClickListener() {
										@Override
										public void onClick(View v) {
											dialog.dismiss();
											loadSection(GM.SECTION_LABLANCA_GM_SCHEDULE);
										}
									});
								}
								break;

							case GM.EXTRA_ACTION_CITYSCHEDULE:
								if (festivals == 1) {
									//Set up the action button
									btDialogAction.setVisibility(View.VISIBLE);
									btDialogAction.setText(this.getApplicationContext().getString(R.string.notification_action_cityschedule));
									btDialogAction.setOnClickListener(new OnClickListener() {
										@Override
										public void onClick(View v) {
											dialog.dismiss();
											loadSection(GM.SECTION_LABLANCA_SCHEDULE);
										}
									});
								}
								break;

							//If the notification is just text
							default:
								//Hide action button
								btDialogAction.setVisibility(View.GONE);
						}
					}
					else{
						btDialogAction.setVisibility(View.GONE);
					}

					//Set dialog parameters
					WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
					lp.copyFrom(dialog.getWindow().getAttributes());
					lp.width = WindowManager.LayoutParams.MATCH_PARENT;
					lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
					lp.gravity = Gravity.CENTER;
					lp.dimAmount = 0.4f;
					dialog.getWindow().setAttributes(lp);

					//Show dialog
					dialog.show();
				}
			}
		}
	}
    
    /**
     * Creates the app database and fills it with the hard coded, default data.
     */
    private void createDatabase(){
    	SQLiteDatabase db;
    	try {
    		//Create database
    		db = openOrCreateDatabase(GM.DB_NAME, Activity.MODE_PRIVATE, null);

			db.execSQL("CREATE TABLE IF NOT EXISTS activity (id INT, permalink VARCHAR, date DATETIME, city VARCHAR, title_es VARCHAR, title_en VARCHAR, title_eu VARCHAR, text_es VARCHAR, text_en VARCHAR, text_eu VARCHAR, after_es VARCHAR, after_en VARCHAR, after_eu VARCHAR, price INT, inscription INT, max_people INT, album INT, dtime DATETIME, comments INT);");
			db.execSQL("CREATE TABLE IF NOT EXISTS activity_comment (id INT, activity INT, text VARCHAR, dtime DATETIME, username VARCHAR, lang VARCHAR);");
			db.execSQL("CREATE TABLE IF NOT EXISTS activity_image (id INT, activity INT, image VARCHAR, idx INT);");
			db.execSQL("CREATE TABLE IF NOT EXISTS activity_itinerary (id INT, activity INT, name_es VARCHAR, name_en VARCHAR, name_eu VARCHAR, description_es VARCHAR, description_en VARCHAR, description_eu VARCHAR, start DATETIME, end DATETIME, place INT);");
			db.execSQL("CREATE TABLE IF NOT EXISTS activity_tag (activity INT, tag VARCHAR);");
			db.execSQL("CREATE TABLE IF NOT EXISTS album (id INT, permalink VARCHAR, name_es VARCHAR, name_en VARCHAR, name_eu VARCHAR, description_es VARCHAR, description_en VARCHAR, description_eu VARCHAR, open INT, time DATETIME);");
			db.execSQL("CREATE TABLE IF NOT EXISTS festival (id INT, year INT, text_es VARCHAR, text_en VARCHAR, text_eu VARCHAR, img VARCHAR);");
			db.execSQL("CREATE TABLE IF NOT EXISTS festival_day (id INT, date DATETIME, name_es VARCHAR, name_en VARCHAR, name_eu VARCHAR, price INT);");
			db.execSQL("CREATE TABLE IF NOT EXISTS festival_event (id INT, gm INT, title_es VARCHAR, title_en VARCHAR, title_eu VARCHAR, description_es VARCHAR, description_en VARCHAR, description_eu VARCHAR, host INT, place INT, start DATETIME, end DATETIME);");
			db.execSQL("CREATE TABLE IF NOT EXISTS festival_event_image (id INT, event INT, image VARCHAR, idx INT);");
			db.execSQL("CREATE TABLE IF NOT EXISTS festival_offer (id INT, year INT, name_es VARCHAR, name_en VARCHAR, name_eu VARCHAR, description_es VARCHAR, description_en VARCHAR, description_eu VARCHAR, days INT, price INT);");
			db.execSQL("CREATE TABLE IF NOT EXISTS location (id INT, dtime DATETIME, lat FLOAT, lon FLOAT, manual INT);");
			db.execSQL("CREATE TABLE IF NOT EXISTS notification (id INT, dtime DATETIME, duration INT, action VARCHAR, title_es VARCHAR, title_en VARCHAR, title_eu VARCHAR, text_es VARCHAR, text_en VARCHAR, text_eu VARCHAR, internal INT);");
			db.execSQL("CREATE TABLE IF NOT EXISTS people (id INT, name_es VARCHAR, name_en VARCHAR, name_eu VARCHAR, link VARCHAR);");
			db.execSQL("CREATE TABLE IF NOT EXISTS photo (id INT, file VARCHAR, permalink VARCHAR, title_es VARCHAR, title_en VARCHAR, title_eu VARCHAR, description_es VARCHAR, description_en VARCHAR, description_eu VARCHAR, dtime DATETIME, uploaded DATETIME, place INT, width INT, height INT, size INT, username VARCHAR);");
			db.execSQL("CREATE TABLE IF NOT EXISTS photo_album (photo INT, album INT);");
			db.execSQL("CREATE TABLE IF NOT EXISTS photo_comment (id INT, photo INT, text VARCHAR, dtime DATETIME, username VARCHAR, lang VARCHAR);");
			db.execSQL("CREATE TABLE IF NOT EXISTS place (id INT, name_es VARCHAR, name_en VARCHAR, name_eu VARCHAR, address_es VARCHAR, address_en VARCHAR, address_eu VARCHAR, cp VARCHAR, lat FLOAT, lon FLOAT);");
			db.execSQL("CREATE TABLE IF NOT EXISTS post (id INT, permalink VARCHAR, title_es VARCHAR, title_en VARCHAR, title_eu VARCHAR, text_es VARCHAR, text_en VARCHAR, text_eu VARCHAR, dtime DATETIME, comments INT, username VARCHAR);");
			db.execSQL("CREATE TABLE IF NOT EXISTS post_comment (id INT, post INT, text VARCHAR, dtime DATETIME, username VARCHAR, lang VARCHAR);");
			db.execSQL("CREATE TABLE IF NOT EXISTS post_image (id INT, post INT, image VARCHAR, idx INT);");
			db.execSQL("CREATE TABLE IF NOT EXISTS post_tag (post INT, tag VARCHAR);");
			db.execSQL("CREATE TABLE IF NOT EXISTS settings (name VARCHAR, value VARCHAR);");
			db.execSQL("CREATE TABLE IF NOT EXISTS sponsor (id INT, name_es VARCHAR, name_en VARCHAR, name_eu VARCHAR, text_es VARCHAR, text_en VARCHAR, text_eu VARCHAR, image VARCHAR, address_es VARCHAR, address_en VARCHAR, address_eu VARCHAR, link VARCHAR, lat FLOAT, lon FLOAT)");
			db.execSQL("CREATE TABLE IF NOT EXISTS version (section VARCHAR, version INT);");
			db.close();
    	}
    	catch (Exception ex){
    		Log.e("Error creating database", ex.toString());
    	}
    }

	/**
	 * Performs a full sync against the remote database.
	 */
	private void sync(){
		ProgressBar pbSync = (ProgressBar) findViewById(R.id.pb_sync);
		ImageView ivSync = (ImageView) findViewById(R.id.iv_logo);
		new Sync(this, pbSync, ivSync).execute();
	}
	
	/**
	 * Perform an initial sync before the app can be used. 
	 * A dialog will block the UI. 
	 * It is intended to be used only when the database is empty.
	 */
	@SuppressWarnings("ConstantConditions")
	private void initialSync(){
		//Create a dialog
		Dialog dialog = new Dialog(this);
		dialog.setCancelable(false);
		
		//Set up the window
		dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
		dialog.setContentView(R.layout.dialog_sync);

		//Set dialog parameters
		WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
		lp.copyFrom(dialog.getWindow().getAttributes());
		lp.width = WindowManager.LayoutParams.MATCH_PARENT;
		lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
		lp.gravity = Gravity.CENTER;
		lp.dimAmount = 0.4f;
		dialog.getWindow().setAttributes(lp);
		
		//Sync
		ProgressBar pbSync = (ProgressBar) findViewById(R.id.pb_sync);
		ImageView ivSync = (ImageView) findViewById(R.id.iv_logo);
		new Sync(this, pbSync, ivSync, dialog, this).execute();
	}
	
	/**
	 * Overrides onBackPressed(). 
	 * Used to show the previous fragment instead of finishing the app.
	 * 
	 * @see android.support.v7.app.AppCompatActivity#onBackPressed()
	 */
	@Override
	public void onBackPressed(){
		try {
			FragmentManager fm = getFragmentManager();
			if (fm.getBackStackEntryCount() > 1) {
				fm.popBackStack();
			} else {
				finish();
				super.onBackPressed();
			}
		}
		catch (Exception ex){
			Log.e("Error going back", "Finishing activity: " + ex.toString());
			Log.e("RUNNABLE", "Finishing callback for location");
			locationHandler.removeCallbacks(checkForLocation);
			finish();
			//super.onBackPressed();
		}
		
	}

	/**
	 * Overrides onKeyUp().
	 * Used to toggle the menu whent the key is pressed.
	 *
	 * @see android.app.Activity#onKeyUp(int, KeyEvent)
	 */
	@Override
	public boolean onKeyUp(int keyCode, KeyEvent event) {
		if (keyCode == KeyEvent.KEYCODE_MENU) {
			showMenu(this.findViewById(R.id.bt_menu));
			return true;
		}
		return super.onKeyUp(keyCode, event);
	}

	@Override
	public void onResume(){
		locationHandler.post(checkForLocation);
		super.onResume();
	}

	@Override
	public void onPause(){
		locationHandler.removeCallbacks(checkForLocation);
		super.onPause();
	}

	@Override
	public void onDestroy(){
		locationHandler.removeCallbacks(checkForLocation);
		super.onDestroy();
	}
	
}