Android Open Source - SimpleNoteTakingApp Notes Data Source

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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.data;
//from w ww.j  a va 2s  .c o m
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.SortedSet;
import java.util.TreeSet;

import android.content.Context;
import android.content.SharedPreferences;

public class NotesDataSource {

  private static final String PREFKEY = "notes";
  private SharedPreferences notePrefs;

  public NotesDataSource(Context context) {
    notePrefs = context.getSharedPreferences(PREFKEY, Context.MODE_PRIVATE);
  }

  public List<NoteItem> findAll() {

    Map<String, ?> notesMap = notePrefs.getAll();
    SortedSet<String> keys = new TreeSet<String>(notesMap.keySet());
    
    List<NoteItem> notesList = new ArrayList<NoteItem>();
    
    for(String key : keys){
      NoteItem note = NoteItem.getNew();
      note.setKey(key);
      note.setText((String) notesMap.get(key));
      notesList.add(note);
    }
    
    if(notesList.isEmpty()){
      notesList.add(NoteItem.getNew());
    }

    return notesList;
  }

  public boolean update(NoteItem note) {

    SharedPreferences.Editor editor = notePrefs.edit();  
    editor.putString(note.getKey(), note.getText());
    editor.commit();

    return true;
  }

  public boolean remove(NoteItem note) {

    if(notePrefs.contains(note.getKey())){
      SharedPreferences.Editor editor = notePrefs.edit();  
      editor.remove(note.getKey());
      editor.commit();
    }

    return true;
  }

}

Java Source Code List

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