com.castoffline.mediaactivity.MainActivity.java Source code

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Here is the source code for com.castoffline.mediaactivity.MainActivity.java

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/*Copyright 2014 Divya Anna Marcus
    
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.*/

/*Reference: https://developer.android.com/training/implementing-navigation/nav-drawer.html*/

package com.castoffline.mediaactivity;

import java.util.ArrayList;
import com.castoffline.navslidingmenu.NavigationlistAdapter;
import com.castoffline.navslidingmenu.Navigationmenu;
import com.castoffline.R;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;

public class MainActivity extends Activity {
    private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;
    private CharSequence mDrawerTitle;
    private CharSequence mTitle;
    private String[] navMenuTitles;
    private TypedArray navMenuIcons;
    private ArrayList<Navigationmenu> navDrawerItems;
    private NavigationlistAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mainactivity);
        mTitle = mDrawerTitle = getTitle();
        navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);
        navMenuIcons = getResources().obtainTypedArray(R.array.nav_drawer_icons);
        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        mDrawerList = (ListView) findViewById(R.id.list_slidermenu);
        navDrawerItems = new ArrayList<Navigationmenu>();
        navDrawerItems.add(new Navigationmenu(navMenuTitles[0], navMenuIcons.getResourceId(0, 1)));
        navDrawerItems.add(new Navigationmenu(navMenuTitles[1], navMenuIcons.getResourceId(1, 1)));
        navDrawerItems.add(new Navigationmenu(navMenuTitles[2], navMenuIcons.getResourceId(2, 1)));
        navMenuIcons.recycle();
        mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
        adapter = new NavigationlistAdapter(getApplicationContext(), navDrawerItems);
        mDrawerList.setAdapter(adapter);
        // 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
        mDrawerToggle = new ActionBarDrawerToggle(this, /* host Activity */
                mDrawerLayout, /* DrawerLayout object */
                R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
                R.string.app_name, /* "open drawer" description for accessibility which is app_name */
                R.string.app_name) { /* "close drawer" description for accessibility which is app name */
            public void onDrawerClosed(View view) {
                getActionBar().setTitle(mTitle);
                invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
            }

            public void onDrawerOpened(View drawerView) {
                getActionBar().setTitle(mDrawerTitle);
                invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
            }
        };
        mDrawerLayout.setDrawerListener(mDrawerToggle);
        if (savedInstanceState == null) {
            displayView(0);
        }
    }

    private class SlideMenuClickListener implements ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            displayView(position);
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    /* Called whenever we call invalidateOptionsMenu() */

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
        return super.onPrepareOptionsMenu(menu);
    }

    private void displayView(int position) {
        Fragment fragment = null;
        switch (position) {
        case 0:
            fragment = new VideoPlayerActivity();
            break;
        case 1:
            fragment = new ImageGrid();
            break;
        case 2:
            fragment = new AudioPlayerActivity();
            break;
        default:
            break;
        }
        if (fragment != null) {
            FragmentManager fragmentManager = getFragmentManager();
            fragmentManager.beginTransaction().replace(R.id.frame_container, fragment).commit();
            mDrawerList.setItemChecked(position, true);
            mDrawerList.setSelection(position);
            setTitle(navMenuTitles[position]);
            mDrawerLayout.closeDrawer(mDrawerList);
        } else {
            Log.e("MainActivity", "Error in creating fragment");
        }
    }

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

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

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

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

}