Android Open Source - android-movies-demo Movies Activity

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Back to project page android-movies-demo.

License

The source code is released under:

MIT License

Java Source Code

package com.idunnolol.moviesdemo.ui;
//  w w  w  . j ava2  s  .  co m
import android.app.ActionBar;
import android.app.FragmentTransaction;
import android.graphics.Point;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import com.idunnolol.moviesdemo.R;
import com.idunnolol.moviesdemo.data.Movie;
import com.idunnolol.moviesdemo.view.SlidingListView;
import com.idunnolol.moviesdemo.view.ViewPager;
import com.idunnolol.moviesdemo.widget.MovieAdapter;

import java.util.Locale;

public class MoviesActivity extends FragmentActivity implements ActionBar.TabListener,
    MovieAdapter.MovieAdapterListener {

  /**
   * The {@link android.support.v4.view.PagerAdapter} that will provide
   * fragments for each of the sections. We use a
   * {@link android.support.v4.app.FragmentPagerAdapter} derivative, which
   * will keep every loaded fragment in memory. If this becomes too memory
   * intensive, it may be best to switch to a
   * {@link android.support.v4.app.FragmentStatePagerAdapter}.
   */
  SectionsPagerAdapter mSectionsPagerAdapter;

  /**
   * The {@link ViewPager} that will host the section contents.
   */
  ViewPager mViewPager;

  // ListView on screen
  private SlidingListView mListView;
  private MovieAdapter mAdapter;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_movies);

    // Set up the action bar.
    final ActionBar actionBar = getActionBar();
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

    // Create the adapter that will return a fragment for each of the three
    // primary sections of the app.
    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(mSectionsPagerAdapter);
    mViewPager.setOffscreenPageLimit(3);

    // For each of the sections in the app, add a tab to the action bar.
    for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
      // Create a tab with text corresponding to the page title defined by
      // the adapter. Also specify this Activity object, which implements
      // the TabListener interface, as the callback (listener) for when
      // this tab is selected.
      actionBar.addTab(
          actionBar.newTab()
              .setText(mSectionsPagerAdapter.getPageTitle(i))
              .setTabListener(this));
    }

    mViewPager.setCurrentItem(1);
    actionBar.setSelectedNavigationItem(1);

    mViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
      private int mLastState;

      @Override
      public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        if (position == 0) {
          setSlide(positionOffset - 1);
        }
        else if (position == 1) {
          setSlide(positionOffset);
        }
        else if (position == 2) {
          setSlide(1);
        }
      }

      @Override
      public void onPageSelected(int position) {
        actionBar.setSelectedNavigationItem(position);
      }

      @Override
      public void onPageScrollStateChanged(int state) {
        if (state == ViewPager.SCROLL_STATE_IDLE) {
          mListView.setUseHardwareLayers(false);
        }
        else if (mLastState == ViewPager.SCROLL_STATE_IDLE) {
          mListView.setUseHardwareLayers(true);
        }

        mLastState = state;
      }
    });

    mListView = (SlidingListView) findViewById(R.id.sliding_list_view);

    // Add some spacing views above/below the rest of the rows; this keeps us from having
    // to customize the first/last rows to add some extra padding
    LayoutInflater inflater = LayoutInflater.from(this);
    mListView.addHeaderView(inflater.inflate(R.layout.include_header_footer_space, mListView, false));
    mListView.addFooterView(inflater.inflate(R.layout.include_header_footer_space, mListView, false));

    // We want the total width == 3*cell padding + 2*cell size
    int cellPadding = getResources().getDimensionPixelSize(R.dimen.cell_padding);
    Point size = new Point();
    getWindowManager().getDefaultDisplay().getSize(size);
    int cellSize = (size.x - 3 * cellPadding) / 2;

    MoviesApplication app = (MoviesApplication) getApplication();
    mAdapter = new MovieAdapter(this, app.getDemoData(), this, cellSize);
    mListView.setAdapter(mAdapter);
  }

  private void setSlide(float slide) {
    mAdapter.setSlide(slide);
    mListView.setSlide(slide);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.movies, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
      case R.id.action_search:
        Toast.makeText(this, "Search not implemented for demo", Toast.LENGTH_SHORT).show();
        return true;
      case R.id.action_about:
        DialogFragment df = new AboutDialogFragment();
        df.show(getSupportFragmentManager(), "aboutDf");
        return true;
    }
    return super.onOptionsItemSelected(item);
  }

  @Override
  public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
    // When the given tab is selected, switch to the corresponding page in
    // the ViewPager.
    mViewPager.setCurrentItem(tab.getPosition());
  }

  @Override
  public void onBackPressed() {
    // If the user is looking at detailed rows, put them back to the other screen instead
    // of leaving the page entirely
    if (mViewPager.getCurrentItem() != 1) {
      mViewPager.setCurrentItem(1, true);
    }
    else {
      super.onBackPressed();
    }
  }

  @Override
  public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
  }

  @Override
  public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
  }

  /**
   * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
   * one of the sections/tabs/pages.
   */
  public class SectionsPagerAdapter extends FragmentPagerAdapter {

    public SectionsPagerAdapter(FragmentManager fm) {
      super(fm);
    }

    @Override
    public Fragment getItem(int position) {
      return new SpaceFragment();
    }

    @Override
    public int getCount() {
      // Show 3 total pages.
      return 3;
    }

    @Override
    public long getItemId(int position) {
      return super.getItemId(position);
    }

    @Override
    public CharSequence getPageTitle(int position) {
      Locale l = Locale.getDefault();
      switch (position) {
      case 0:
        return getString(R.string.title_section1).toUpperCase(l);
      case 1:
        return getString(R.string.title_section2).toUpperCase(l);
      case 2:
        return getString(R.string.title_section3).toUpperCase(l);
      }
      return null;
    }
  }

  /**
   * A simple Fragment that just takes up space; We just want to use
   * the Decor View on top for display.
   */
  public static class SpaceFragment extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
      return inflater.inflate(R.layout.fragment_space, container, false);
    }
  }

  //////////////////////////////////////////////////////////////////////////
  // MovieAdapterListener

  @Override
  public void onMovieClicked(Movie movie, boolean isOnLeft) {
    int targetItem = isOnLeft ? 0 : 2;
    if (mViewPager.getCurrentItem() != targetItem) {
      mViewPager.setCurrentItem(targetItem, true);
    }
  }
}

Java Source Code List

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