se.chalmers.watchme.activity.MainActivity.java Source code

Introduction

Here is the source code for se.chalmers.watchme.activity.MainActivity.java

Source

/**
 *   MainActivity.java
 *
 *   The Main Activity for the WatchMe application. Contains to tabs: one
 *   presenting all movies and one presenting all tags.
 *
 *   @author lisastenberg
 *   @author Johan Brook
 *   @copyright (c) 2012 Johan Brook, Robin Andersson, Lisa Stenberg, Mattias Henriksson
 *   @license MIT
 */

package se.chalmers.watchme.activity;

import java.util.List;
import se.chalmers.watchme.R;
import se.chalmers.watchme.database.DatabaseAdapter;
import se.chalmers.watchme.model.Movie;
import se.chalmers.watchme.ui.MovieListFragment;
import se.chalmers.watchme.ui.TagListFragment;
import se.chalmers.watchme.utils.DateTimeUtils;
import se.chalmers.watchme.utils.MenuUtils;
import android.app.ActionBar;
import android.app.SearchManager;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.SearchView;

public class MainActivity extends FragmentActivity {

    public static final String MOVIE_DETAILS_ID = "se.chalmers.watchme.DETAILS_ID";
    public static final String MOVIE_DETAILS_TITLE = "se.chalmers.watchme.DETAILS_TITLE";
    public static final String MOVIE_DETAILS_RATING = "se.chalmers.watchme.DETAILS_RATING";
    public static final String MOVIE_DETAILS_NOTE = "se.chalmers.watchme.DETAILS_NOTE";

    private ViewPager viewPager;
    private TabsAdapter tabsAdapter;
    private ActionBar actionBar;

    MenuItem mailItem;
    MenuItem sortItem;
    MenuItem searchItem;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Setup view pager
        this.viewPager = new ViewPager(this);
        this.viewPager.setId(R.id.vPager);
        setContentView(viewPager);

        // Setup action bar
        actionBar = getActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        actionBar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE);

        // Setup tabs
        tabsAdapter = new TabsAdapter(this, viewPager);
        tabsAdapter.addTab(actionBar.newTab().setText(R.string.tab_movies), MovieListFragment.class, null);
        tabsAdapter.addTab(actionBar.newTab().setText(R.string.tab_tags), TagListFragment.class, null);
        if (savedInstanceState != null) {
            actionBar.setSelectedNavigationItem(savedInstanceState.getInt("tab", 0));
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);

        mailItem = menu.findItem(R.id.menu_send_email_button);
        sortItem = menu.findItem(R.id.menu_sort_button);
        searchItem = menu.findItem(R.id.menu_search_button);

        setButtonsState();

        /*
         * Add necessary functionality for the search widget
         */
        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
        SearchView searchView = (SearchView) menu.findItem(R.id.menu_search_button).getActionView();
        searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
        searchView.setIconifiedByDefault(false); // Do not iconify the widget;
        // expand it by default

        return true;
    }

    @Override
    public void onResume() {

        /*
         * Updates the button state when returning to Main Activity. The menu
         * items are null when first creating them.
         */
        if (mailItem != null && sortItem != null && searchItem != null) {
            setButtonsState();
        }

        super.onResume();

    }

    /**
     * Sets the button states for Action Bar items (disabled/enabled)
     * accordingly. Also changes the icon to reflect the state (is not done
     * automatically by android)
     */
    private void setButtonsState() {
        int nbrOfMovies = new DatabaseAdapter(getContentResolver()).getMovieCount();
        boolean existMovies = nbrOfMovies == 0;

        // If there are no movies make the mail button and sort button disabled
        mailItem.setEnabled(!existMovies);
        sortItem.setEnabled(!existMovies);
        searchItem.setEnabled(!existMovies);

        MenuUtils.setMenuIconState(mailItem);
        MenuUtils.setMenuIconState(sortItem);
        MenuUtils.setMenuIconState(searchItem);

    }

    /**
     * When the user clicks on a button in the Action bar.
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()) {
        case R.id.menu_main_add_movie:
            Intent intent = new Intent(this, AddMovieActivity.class);
            startActivity(intent);
            return true;

        case R.id.menu_send_email_button:
            sendEmail();
            return true;

        case R.id.menu_search_button:
            onSearchRequested();
            return true;

        default:
            return super.onOptionsItemSelected(item);
        }
    }

    private void sendEmail() {
        Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
        emailIntent.setType("text/plain");

        List<Movie> movies = new DatabaseAdapter(getContentResolver()).getAllMovies();

        // Parse all movies with their dates:
        String movieString = "";
        for (Movie m : movies) {
            movieString += m.getTitle() + " (" + DateTimeUtils.toSimpleDate(m.getDate()) + ")\n";
        }

        emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, R.string.email_subject);
        emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, movieString);

        // Let the user choose email app to mail from
        startActivity(Intent.createChooser(emailIntent, getString(R.string.choose_message_app)));
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putInt("tab", getActionBar().getSelectedNavigationIndex());
    }

}