NoteActivity.java

/*
 * Copyright (C) 2011 Markus Junginger, greenrobot (http://greenrobot.de)
 *
 * 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.
 */
package de.greenrobot.daoexample;

import java.text.DateFormat;
import java.util.Date;

import net.sqlcipher.database.SQLiteDatabase;

import com.greendao.db.NoteEntityDao;

import android.app.ListActivity;
import android.database.Cursor;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.TextView.OnEditorActionListener;

public class NoteActivity extends ListActivity {

    private SQLiteDatabase db;

    private EditText editText;
    private NoteEntityDao noteEntityDao;
    private Cursor cursor;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);
        noteEntityDao = new NoteEntityDao();
        db = noteEntityDao.getEntityDao().getDatabase();
        
        String textColumn = NoteDao.Properties.Text.columnName;
        String orderBy = textColumn + " COLLATE LOCALIZED ASC";
        cursor = db.query(noteEntityDao.getEntityDao().getTablename(), noteEntityDao.getEntityDao().getAllColumns(), null, null, null, null, orderBy);
        String[] from = { textColumn, NoteDao.Properties.Comment.columnName };
        int[] to = { android.R.id.text1, android.R.id.text2 };

        SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_2, cursor, from,
                to);
        setListAdapter(adapter);

        editText = (EditText) findViewById(R.id.editTextNote);
        addUiListeners();
    }

    protected void addUiListeners() {
        editText.setOnEditorActionListener(new OnEditorActionListener() {

            @Override
            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
                if (actionId == EditorInfo.IME_ACTION_DONE) {
                    addNote();
                    return true;
                }
                return false;
            }
        });

        final View button = findViewById(R.id.buttonAdd);
        button.setEnabled(false);
        editText.addTextChangedListener(new TextWatcher() {

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                boolean enable = s.length() != 0;
                button.setEnabled(enable);
            }

            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            }

            @Override
            public void afterTextChanged(Editable s) {
            }
        });
    }

    public void onMyButtonClick(View view) {
        addNote();
    }

    private void addNote() {
        String noteText = editText.getText().toString();
        editText.setText("");

        final DateFormat df = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM);
        String comment = "Added on " + df.format(new Date());
        Note note = new Note(null, noteText, comment, new Date());
        noteEntityDao.insertEntity(note);
        Log.d("DaoExample", "Inserted new note, ID: " + note.getId());

        cursor.requery();
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        noteEntityDao.deleteEntityByKey(id);
        Log.d("DaoExample", "Deleted note, ID: " + id);
        cursor.requery();
    }

}