Android Open Source - Xnote Recent Notes

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License

The source code is released under:

MIT License

Java Source Code

package com.example.xnote;
/*ww w .ja va 2  s .c  o m*/

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;
import org.w3c.dom.Element;
import org.xml.sax.SAXException;
import java.io.*;
import java.util.*;

public class RecentNotes extends Activity {
  private ListView mainListView ;  
   private ArrayAdapter<String> listAdapter ;  
   
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.recent_notes);

      mainListView = (ListView) findViewById( R.id.recent_notes_list );  
      
      // Create and populate a List of planet names.  
      String[] planets = new String[] {};    
      ArrayList<String> planetList = new ArrayList<String>();  
      planetList.addAll( Arrays.asList(planets) );  
        
      // Create ArrayAdapter using the planet list.  
      listAdapter = new ArrayAdapter<String>(this, R.layout.list_view_row, planetList); 
    
    final String path = Environment.getExternalStorageDirectory().toString()+"/xnote/";
    File f = new File(path);        
    final File [] files = f.listFiles(new FilenameFilter() {
        @Override
        public boolean accept(File dir, String name) {
          return name.endsWith(".xml");
        }
      });
    
    // sort the order of the recent notes
    Arrays.sort(files);
    Collections.reverse(Arrays.asList(files));
    
    final ArrayList<String> mNoteTitle = new ArrayList<String>();
    final ArrayList<String> mNoteContent = new ArrayList<String>();
    for (int i=0; i < files.length; i++)
    {
      //Log.d("Files", "FileName:" + file[i].getName());

      try {
        File fXmlFile = new File(path + files[i].getName());
        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
        Document doc = dBuilder.parse(fXmlFile);
        doc.getDocumentElement().normalize();

        listAdapter.add(doc.getElementsByTagName("title").item(0).getTextContent());
        mNoteTitle.add(doc.getElementsByTagName("title").item(0).getTextContent());
        mNoteContent.add(doc.getElementsByTagName("message").item(0).getTextContent());

      } catch (ParserConfigurationException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      } catch (SAXException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }

    }
    mainListView.setAdapter( listAdapter ); 
    mainListView.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {                
  
                AlertDialog.Builder builder = new AlertDialog.Builder(RecentNotes.this);
                builder.setTitle(mNoteTitle.get(position));
                builder.setMessage(mNoteContent.get(position));

                builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        // Do something
                    }
                });
                builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        // User cancelled the dialog
                    }
                });
                builder.show();
            }                   
      
        });
    
    mainListView.setOnItemLongClickListener(new OnItemLongClickListener() {
            public boolean onItemLongClick(AdapterView<?> parent, View view,
                    final int position, long id) {                
  
                AlertDialog.Builder builder = new AlertDialog.Builder(RecentNotes.this);
                builder.setTitle("Delete Note?");
                builder.setMessage(mNoteTitle.get(position));

                builder.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        // Do something                    
                      File file = new File(path + files[position].getName());
                      file.delete();
                        listAdapter.notifyDataSetChanged();
                    }
                });
                builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        // User cancelled the dialog
                    }
                });
                builder.show();
                return true;
            }
    });

  }
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.recent_notes_menu, menu);
    return true;
  }
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // Handle item selection
    switch (item.getItemId()) {
    case R.id.new_note_option:
      Intent intent = new Intent();
      intent.setClass(getApplicationContext(), MainActivity.class);
      startActivity(intent);
      return true;
    default:
      return super.onOptionsItemSelected(item);
    }
  }
}

Java Source Code List

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