com.nearalias.musicplayer.MainActivity.java Source code

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Here is the source code for com.nearalias.musicplayer.MainActivity.java

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/*
 * Copyright 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.nearalias.musicplayer;

import java.util.ArrayList;

import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.SearchManager;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import com.nearalias.musicplayer.fragments.PlayListFragment;

public class MainActivity extends Activity {
    private DrawerLayout drawerLayout;
    private ListView drawerListView;
    private ActionBarDrawerToggle drawerToggle;

    private CharSequence drawerTitle;
    private CharSequence currentTitle;
    private String[] planetTitles;
    private ArrayList<String> names, artists, albums, genres, lyrics;

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

        currentTitle = drawerTitle = getTitle();
        planetTitles = getResources().getStringArray(R.array.planets_array);
        drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawerListView = (ListView) findViewById(R.id.left_drawer);

        // set a custom shadow that overlays the main content when the drawer
        // opens
        drawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
        // set up the drawer's list view with items and click listener
        drawerListView.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, planetTitles));
        drawerListView.setOnItemClickListener(new DrawerItemClickListener());

        // enable ActionBar app icon to behave as action to toggle nav drawer
        getActionBar().setDisplayHomeAsUpEnabled(true);
        getActionBar().setHomeButtonEnabled(true);

        // ActionBarDrawerToggle ties together the the proper interactions
        // between the sliding drawer and the action bar app icon
        drawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
                drawerLayout, /* DrawerLayout object */
                R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
                R.string.drawer_open, /* "open drawer" description for accessibility */
                R.string.drawer_close /* "close drawer" description for accessibility */
        ) {
            public void onDrawerClosed(View view) {
                getActionBar().setTitle(currentTitle);
                invalidateOptionsMenu(); // creates call to
                // onPrepareOptionsMenu()
            }

            public void onDrawerOpened(View drawerView) {
                getActionBar().setTitle(drawerTitle);
                invalidateOptionsMenu(); // creates call to
                // onPrepareOptionsMenu()
            }
        };
        drawerLayout.setDrawerListener(drawerToggle);

        if (savedInstanceState == null) {
            selectItem(0);
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.main, menu);
        return super.onCreateOptionsMenu(menu);
    }

    /* Called whenever we call invalidateOptionsMenu() */
    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        // If the nav drawer is open, hide action items related to the content
        // view
        boolean drawerOpen = drawerLayout.isDrawerOpen(drawerListView);
        menu.findItem(R.id.action_websearch).setVisible(!drawerOpen);
        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // The action bar home/up action should open or close the drawer.
        // ActionBarDrawerToggle will take care of this.
        if (drawerToggle.onOptionsItemSelected(item)) {
            return true;
        }
        // Handle action buttons
        switch (item.getItemId()) {
        case R.id.action_websearch:
            // create intent to perform web search for this planet
            Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
            intent.putExtra(SearchManager.QUERY, getActionBar().getTitle());
            // catch event that there's no activity to handle intent
            if (intent.resolveActivity(getPackageManager()) != null) {
                startActivity(intent);
            } else {
                Toast.makeText(this, R.string.app_not_available, Toast.LENGTH_LONG).show();
            }
            return true;
        default:
            return super.onOptionsItemSelected(item);
        }
    }

    /* The click listner for ListView in the navigation drawer */
    private class DrawerItemClickListener implements ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            selectItem(position);
        }
    }

    private void selectItem(int position) {
        // update the main content by replacing fragments
        if (getFragmentManager().findFragmentById(R.id.content_frame) == null) {
            Fragment fragment = new PlayListFragment();
            Bundle args = new Bundle();
            args.putInt(PlayListFragment.ARG_PLANET_NUMBER, position);
            makeUpFakeSongs();
            args.putStringArrayList(PlayListFragment.ARG_SONG_NAME, names);
            args.putStringArrayList(PlayListFragment.ARG_SONG_ARTIST, artists);
            args.putStringArrayList(PlayListFragment.ARG_SONG_ALBUM, albums);
            args.putStringArrayList(PlayListFragment.ARG_SONG_GENRE, genres);
            args.putStringArrayList(PlayListFragment.ARG_SONG_LYRIC, lyrics);
            fragment.setArguments(args);

            FragmentManager fragmentManager = getFragmentManager();
            fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
        }
        // update selected item and title, then close the drawer
        drawerListView.setItemChecked(position, true);
        setTitle(planetTitles[position]);
        drawerLayout.closeDrawer(drawerListView);
    }

    private void makeUpFakeSongs() {
        names = new ArrayList<String>();
        artists = new ArrayList<String>();
        albums = new ArrayList<String>();
        genres = new ArrayList<String>();
        lyrics = new ArrayList<String>();
        for (int i = 0; i < 20; i++) {
            names.add("Song Number " + (i + 1));
            artists.add("Artist Number " + (i + 1));
            albums.add("Album Number " + (i + 1) + " - ");
            genres.add("Genre Number " + (i + 1));
            lyrics.add("Lyric Number " + (i + 1));
        }
    }

    @Override
    public void setTitle(CharSequence title) {
        currentTitle = title;
        getActionBar().setTitle(currentTitle);
    }

    /**
     * When using the ActionBarDrawerToggle, you must call it during
     * onPostCreate() and onConfigurationChanged()...
     */

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        // Sync the toggle state after onRestoreInstanceState has occurred.
        drawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Pass any configuration change to the drawer toggls
        drawerToggle.onConfigurationChanged(newConfig);
    }
}