Android Open Source - SimpleNoteTakingApp Main Activity

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Back to project page SimpleNoteTakingApp.

License

The source code is released under:

MIT License

Java Source Code

package com.example.notetakingapp;
// www  .j  a va 2 s.c o  m
import java.util.List;

import com.example.notetakingapp.data.NoteItem;
import com.example.notetakingapp.data.NotesDataSource;

import android.R.string;
import android.nfc.NfcAdapter.CreateNdefMessageCallback;
import android.os.Bundle;
import android.app.Activity;
import android.app.ApplicationErrorReport.AnrInfo;
import android.app.ListActivity;
import android.content.Intent;
import android.util.Log;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends ListActivity {

  private NotesDataSource datasource;
  List<NoteItem> notesList;
  private static final int MENU_DELETE_ID=1002;
  private int currentNoteId;
  
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        registerForContextMenu(getListView());
        
        datasource = new NotesDataSource(MainActivity.this);
        refreshDisplay();
    }


    private void refreshDisplay() {
      
       notesList=datasource.findAll();
       ArrayAdapter<NoteItem> adapter=new ArrayAdapter<NoteItem>(MainActivity.this,
      R.layout.list_item_layout,notesList);
       setListAdapter(adapter);
    
    }


  @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, menu);
        return true;
    }
    
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    
    if(item.getItemId()==R.id.action_create_new){
      CreateNote();
      
    }
    
    return super.onOptionsItemSelected(item);
  }


  private void CreateNote() {
    NoteItem note=NoteItem.getNew();
    Intent i=new Intent(MainActivity.this,EditNoteActivity.class);
    
    
    i.putExtra("key",note.getKey());
    i.putExtra("text",note.getText());
    startActivityForResult(i,1001);
    }
  @Override
  protected void onListItemClick(ListView l, View v, int position, long id) {
    
    NoteItem note=notesList.get(position);
    Intent i=new Intent(MainActivity.this,EditNoteActivity.class);
    
    
    i.putExtra("key",note.getKey());
    i.putExtra("text",note.getText());
    startActivityForResult(i,1001);
  }
  
  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    
    if(requestCode==1001 && resultCode==RESULT_OK){
      
      NoteItem note=NoteItem.getNew();
      note.setKey(data.getStringExtra("key"));
      note.setText(data.getStringExtra("text"));
      datasource.update(note);
      refreshDisplay();
    }
  }
  
  @Override
  public void onCreateContextMenu(ContextMenu menu, View v,
      ContextMenuInfo menuInfo) {
    
    AdapterContextMenuInfo info=(AdapterContextMenuInfo) menuInfo;
    currentNoteId=(int) info.id;
    menu.add(0,MENU_DELETE_ID,0,"Delete");
  }
  @Override
  public boolean onContextItemSelected(MenuItem item) {
    
    if(item.getItemId()==MENU_DELETE_ID){
      
      NoteItem note=notesList.get(currentNoteId);
      datasource.remove(note);
      refreshDisplay();
      
    }
    return super.onContextItemSelected(item);
  }
}

Java Source Code List

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