Android Open Source - watchme Main Activity

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License

The source code is released under:

Copyright (c) 2012 Johan Brook, Robin Andersson, Lisa Stenberg, Mattias Henriksson Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documen...

Java Source Code

/**
 *  MainActivity.java/*from ww w . j  av a  2 s .co  m*/
 *
 *  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());
  }

}

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