Android Open Source - EasyFeeds Main Activity

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License

The source code is released under:

This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a co...

Java Source Code

package com.manustudios.easyfeeds;
/*w w w.j a v  a2 s . com*/
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.annotation.SuppressLint;
import android.app.AlertDialog;

import android.app.Fragment;
import android.app.FragmentManager;

import android.content.Context;
import android.content.res.Configuration;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.FragmentActivity;
import android.support.v13.app.FragmentStatePagerAdapter;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;

import android.text.Html;
import android.util.Log;
import android.util.SparseArray;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.ExpandableListView.OnGroupExpandListener;
import android.widget.BaseExpandableListAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import com.manustudios.adapters.MainScreenAdapter;
import com.manustudios.adapters.SavedTopicAdapter;
import com.manustudios.adapters.SubTopicAdapter;
import com.manustudios.adapters.TopicAdapter;
import com.manustudios.easyfeeds.R;
import com.manustudios.extra.Feed;
import com.manustudios.extra.FeedSaver;
import com.manustudios.extra.ListTopicArray;
import com.manustudios.extra.ManagerDate;

public class MainActivity extends FragmentActivity {

  public String mSearchText = "xataka";
  public static final String GOOGLE_API_URL = "https://ajax.googleapis.com/ajax/services/feed/find?v=1.0&q=xataka";
  public static final String GOOGLE_API_LOAD = "https://ajax.googleapis.com/ajax/services/feed/load?v=1.0&q=";
  public static final String GOOGLE_API_POSTS_QTY = "&num=25";
  public static final String TAG = "EasyNews TAG";
  
  //KEYS FOR GETTING THE STRING DATA IN AND OUT OF THE SPARSE ARRAYS WHICH GOES ON THE MAIN ACTIVITY LISTVIEW
  public static final int KEY_TITLE = 11111;
  public static final int KEY_CONTENT = 22222;
  public static final int KEY_IMAGE = 33333;
  public static final int KEY_DATE = 44444;
  public static final int KEY_LINK = 55555;
  
  
  public static int num_pages = 3;
  public static int mPostPerPage = 5;
  
  protected JSONObject jsonData = null;
  protected static ProgressBar mProgressBar;
  
  private static Context mContext;
  static ArrayList<HashMap<String, String>> mSubTopicsList;   // INSTANTIATE ARRAYLIST TO STORE TOPICS
  
  
  //DRAWER VARIABLES DECLARATION
  private static DrawerLayout mDrawerLayout;
  private ActionBarDrawerToggle mDrawerToggle;
  private static ListView mRightDrawerList;
  private static ExpandableListView mLeftDrawerList;
  private LinearLayout mleftDrawerFather;
  private LinearLayout mRightDrawerFather;
  
  private static ViewPager mPager;
    private PagerAdapter mPagerAdapter;
   
    private Button mAddContentButton;
    private Button mRemoveContentButton;
    private Button mChooseTopic;

    private static FragmentManager mFragMan;
    // ----------------------------------------------------------------
    
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Log.i("Activity Recreation", "Create");
    
    mFragMan = getFragmentManager();
    mContext = this;
    mProgressBar = (ProgressBar) findViewById(R.id.progressBar1);
    mSubTopicsList = new ArrayList<HashMap<String, String>>();
    
    //CHECK FOR NETWORK.. IF THERE IS NETWORK DO THE HEAVY WORK.. LOAD THE FIRST SCREEN
    if(checkNetwork()){
      mProgressBar.setVisibility(ProgressBar.VISIBLE);
      
    }
    else{     //IF NOT SHOW A MERCYFULL MESSAGE
      Toast.makeText(this, "Network is off!", Toast.LENGTH_LONG);
    }
    
    
    
    //DECLARE DRAWER LAYOUT AND DRAWER NAVIGATION LIST
    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    mRightDrawerList = (ListView) findViewById(R.id.nav_list_right);
    mRightDrawerFather = (LinearLayout) findViewById(R.id.father_nav_right);
    
    mLeftDrawerList = (ExpandableListView) findViewById(R.id.nav_list_left);
    mleftDrawerFather = (LinearLayout) findViewById(R.id.father_nav_left);
    
    mAddContentButton = (Button) findViewById(R.id.nav_left_add_button);
    mRemoveContentButton = (Button) findViewById(R.id.nav_left_remove_button);
    mChooseTopic = (Button) findViewById(R.id.nav_right_topic_button);
    mChooseTopic.setVisibility(View.INVISIBLE);
    
    mPager = (ViewPager) findViewById(R.id.pager_main_list);
    
    //REFRESHING AND SETTING LISTENERS
    refreshLeftNav();
    //mLeftDrawerList.setOnChildClickListener(new DrawerLeftClickListener());
    mleftDrawerFather.bringToFront();
    
    refreshRightNav();
    mRightDrawerList.setOnItemClickListener(new DrawerItemClickListener());
    mRightDrawerFather.bringToFront();
    
    
    
    //Add Buttons Listeners
    
    mAddContentButton.setOnClickListener(new OnClickListener() {
      
      @Override
      public void onClick(View v) {
        mDrawerLayout.closeDrawers();
        mDrawerLayout.openDrawer(Gravity.END);
      }
    });
    

    
    mChooseTopic.setOnClickListener(new OnClickListener() {
      
      @Override
      public void onClick(View v) {
        refreshRightNav();
        mChooseTopic.setVisibility(View.INVISIBLE);
        mRightDrawerList.setOnItemClickListener(new DrawerItemClickListener());
        mRightDrawerFather.bringToFront();
      }
    });
    
    // enable ActionBar app icon to behave as action to toggle nav drawer
        getActionBar().setDisplayHomeAsUpEnabled(true);
        getActionBar().setHomeButtonEnabled(true);
        
        mDrawerToggle = new ActionBarDrawerToggle
            (this, mDrawerLayout, R.drawable.ic_drawer, R.string.drawer_open, R.string.drawer_close){

          @Override
          public void onDrawerClosed(View drawerView) {
            super.onDrawerClosed(drawerView);
          }

          @Override
          public void onDrawerOpened(View drawerView) {
            if(drawerView.getId() == R.id.father_nav_left){
              mDrawerLayout.closeDrawer(Gravity.END);
              Log.i("Nav Drawer", "Chk");
            }
            super.onDrawerOpened(drawerView);
            
          }
          
        };
    
        mDrawerLayout.setDrawerListener(mDrawerToggle);
    
        
  }
  
  
  
  @Override
  protected void onStart() {
    // TODO Auto-generated method stub
    super.onStart();
    Log.i("Activity Recreation", "Start");
  }



  @Override
  protected void onSaveInstanceState(Bundle outState) {
    // TODO Auto-generated method stub
    super.onSaveInstanceState(outState);
  }



  @Override
  protected void onRestart() {
    // TODO Auto-generated method stub
    super.onRestart();
  }



  @Override
  protected void onResume() {
    super.onResume();
    ViewPagerDataRecover mainScreenDataRec = new ViewPagerDataRecover(MainActivity.this);
    refreshMainScreen(mainScreenDataRec.getLastGroupPos(), mainScreenDataRec.getLastChildPost());
  }



  @Override
  protected void onRestoreInstanceState(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onRestoreInstanceState(savedInstanceState);
    Log.i("Activity Recreation", "Restore");
  }


  @Override
  protected void onPause() {
    // TODO Auto-generated method stub
    super.onPause();
    Log.i("Activity Recreation", "Pause");
  }

  @Override
  protected void onStop() {
    // TODO Auto-generated method stub
    super.onStop();
    Log.i("Activity Recreation", "Stop");
  }
  @Override
  protected void onDestroy() {
    // TODO Auto-generated method stub
    super.onDestroy();
    Log.i("Activity Recreation", "Destroy");
  }

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

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main_nav_drawer, menu);
    return true;
  }
  
  
  //Search button press --- NAVIGATION DRAWER
  @SuppressLint("InlinedApi")
  @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 (mDrawerToggle.onOptionsItemSelected(item)) {
           return true;
       }
    
       switch(item.getItemId()) {
       case R.id.menu_nav_drawer_search:
         mDrawerLayout.closeDrawers();
         mDrawerLayout.openDrawer(Gravity.END);        

         return true;
        default:
            return super.onOptionsItemSelected(item);
        }
  }
  
  
  
  
  //------------- STATIC FUNCTIONS ----------------  
  
  
  

  public static void refreshRightNav(){
    //CREATE TOPICS AND ADAPTER... PLUS SET CUSTOMIZED ADAPTER
    ManagerTopics topics =  new ManagerTopics();                        //INSTANTIATE CLASS WITH TOPICS
    ArrayList<HashMap<String, String>> TopicsList = new ArrayList<HashMap<String, String>>();  // INSTANTIATE ARRAYLIST TO STORE TOPICS
    TopicsList = topics.getTopics();                              //GET TOPICS ARRAYLSIT FROM CLASS
    TopicAdapter adapter = new TopicAdapter(mContext, R.layout.topic_list, TopicsList);        //INSTANTIATE CUSTOMIZED ADAPTER

    mRightDrawerList.setAdapter(adapter);                              //SET ADAPTER
  }
  
  public static void refreshLeftNav(){
    //CREATE LEFT NAV ADAPTER
    FeedSaver feedProvider = new FeedSaver(mContext);
    ArrayList<ListTopicArray> topicList = feedProvider.getSavedFeeds();
    SavedTopicAdapter leftAdapter = new SavedTopicAdapter(mContext, topicList, R.layout.nav_left_topic_group, 
        R.layout.nav_left_sub_topic_child, mDrawerLayout, mPager, mProgressBar, mFragMan);
    mLeftDrawerList.setAdapter(leftAdapter);
    
  }
  
  public static void expandLeftNavGroup(int position){
    mLeftDrawerList.expandGroup(position);
  }

  public static void refreshRightSubNav(int position){
      ManagerSubTopics subTopics =  new ManagerSubTopics();                        //INSTANTIATE CLASS WITH TOPICS
  
      SubTopicAdapter adapter;
        mSubTopicsList = subTopics.getSubTopics(position);                        //GET TOPICS ARRAYLSIT FROM CLASS
                                                
          adapter = new SubTopicAdapter(mContext, R.layout.sub_topic_list, mSubTopicsList, position, mDrawerLayout);    //INSTANTIATE CUSTOMIZED ADAPTER WHICH INCLUDE LRU MEMORY CACHE    
      mRightDrawerList.setAdapter(adapter);
  }




  
  //RIGHT NAV DRAWER TOPIC LISTENER
  private class DrawerItemClickListener implements ListView.OnItemClickListener {
      @Override
      public void onItemClick(AdapterView parent, View view, int position, long id) {
          ManagerSubTopics subTopics =  new ManagerSubTopics();                        //INSTANTIATE CLASS WITH TOPICS
          mChooseTopic.setVisibility(View.VISIBLE);
          if(checkNetwork()){
            SubTopicAdapter adapter;
            mSubTopicsList = subTopics.getSubTopics(position);                        //GET TOPICS ARRAYLSIT FROM CLASS
                                                    
              adapter = new SubTopicAdapter(MainActivity.this, R.layout.sub_topic_list, mSubTopicsList, position, mDrawerLayout);    //INSTANTIATE CUSTOMIZED ADAPTER WHICH INCLUDE LRU MEMORY CACHE    
          mRightDrawerList.setAdapter(adapter);                                                  //SET ADAPTER
          mRightDrawerList.setOnItemClickListener(new DrawerSubItemClickListener());
          
          //Remembering who is the last group
          ViewPagerDataRecover pageDataRecover = new ViewPagerDataRecover(MainActivity.this);
          pageDataRecover.setLastGroupPos(position);
                                                
          }else{     //IF NOT SHOW A MERCYFULL MESSAGE
          Toast.makeText(MainActivity.this, "Network is off!", Toast.LENGTH_LONG);
        }  
            
      
      }
  }
  
  //RIGHT NAV DRAWER SUB TOPIC LISTENER
  private class DrawerSubItemClickListener implements ListView.OnItemClickListener{
  
    @Override
    public void onItemClick(AdapterView<?> arg0, View view, int position,long arg3) {
      
      if(checkNetwork()){
        mProgressBar.setVisibility(ProgressBar.VISIBLE);                  
          HashMap<String, String> subTopicMap =  mSubTopicsList.get(position);
          String feedUrl = subTopicMap.get(ManagerSubTopics.KEY_URL_SUBTOPIC);
        Log.i("Nav Right Feed URL", feedUrl);
          SearchPostsTask blogSearcher = new SearchPostsTask(MainActivity.this, mProgressBar, mPager, getFragmentManager());
        blogSearcher.execute(feedUrl);
        
        //Remembering who is the last child
        ViewPagerDataRecover pageDataRecover = new ViewPagerDataRecover(MainActivity.this);
        pageDataRecover.setLastChildPos(position);
        
        mDrawerLayout.closeDrawers();
        
              
      }
      else{     //IF NOT SHOW A MERCYFULL MESSAGE
        Toast.makeText(MainActivity.this, "Network is off!", Toast.LENGTH_LONG);
      }
      
    }
    
    
  }
  
  //LEFT NAV EXPANDABLE LISTVIEW LISTENER
  private class DrawerLeftClickListener implements OnChildClickListener{

    
    @Override
    public boolean onChildClick(ExpandableListView parent, View v,
        int groupPosition, int childPosition, long id) {
      
      
      FeedSaver feedProvider = new FeedSaver(mContext);
      ArrayList<ListTopicArray> topicList = feedProvider.getSavedFeeds();
      ListTopicArray feedArray = topicList.get(groupPosition);
      Feed feed = feedArray.getItems().get(childPosition);
      
      SearchPostsTask blogSearcher = new SearchPostsTask(MainActivity.this, mProgressBar, mPager, getFragmentManager());
      blogSearcher.execute(feed.getFeedUrl().toString());
      mDrawerLayout.closeDrawers();
      return true;
    }
    
    
  }
  
  
private void refreshMainScreen(int groupPos, int childPos){
  ManagerSubTopics subTopics =  new ManagerSubTopics();
  mSubTopicsList = subTopics.getSubTopics(groupPos);
  HashMap<String, String> subTopicMap =  mSubTopicsList.get(childPos);
  String feedUrl = subTopicMap.get(ManagerSubTopics.KEY_URL_SUBTOPIC);

  SearchPostsTask blogSearcher = new SearchPostsTask(MainActivity.this, mProgressBar, mPager, getFragmentManager());
  blogSearcher.execute(feedUrl);
}
  
  
  
  
  //----------------------------------------------------------------------
  
private boolean checkNetwork(){
    
    ConnectivityManager manager = (ConnectivityManager) 
          getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo informer = manager.getActiveNetworkInfo();
    
    boolean isAvailable = false;
    if(informer !=null && informer.isConnected()){
      isAvailable = true;
    }
    
    return isAvailable;
  }
  

  
}

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