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| package com.xuie.greendaodemo;
import android.app.ListActivity;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
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.CursorAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import com.xuie.greendaodemo.greendao.DaoMaster;
import com.xuie.greendaodemo.greendao.DaoSession;
import com.xuie.greendaodemo.greendao.Note;
import com.xuie.greendaodemo.greendao.NoteDao;
import java.text.DateFormat;
import java.util.Date;
public class MainActivity extends ListActivity {
private EditText editText;
private SQLiteDatabase db;
private NoteDao noteDao;
private SimpleCursorAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
DaoMaster.DevOpenHelper helper = new DaoMaster.DevOpenHelper(this, "notes-db", null);
db = helper.getWritableDatabase();
DaoMaster daoMaster = new DaoMaster(db);
DaoSession daoSession = daoMaster.newSession();
noteDao = daoSession.getNoteDao();
String textColumn = NoteDao.Properties.Text.columnName;
String orderBy = textColumn + " COLLATE LOCALIZED ASC";
Cursor cursor = db.query(noteDao.getTablename(),
noteDao.getAllColumns(), null, null, null, null, orderBy);
String[] from = {textColumn, NoteDao.Properties.Comment.columnName};
int[] to = {android.R.id.text1, android.R.id.text2};
adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_2, cursor,
from, to, CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);
setListAdapter(adapter);
cursor.close();
editText = (EditText) findViewById(R.id.editTextNote);
addUiListeners();
}
protected void addUiListeners() {
editText.setOnEditorActionListener(new TextView.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());
noteDao.insert(note);
Log.d("DaoExample", "Inserted new note, ID: " + note.getId());
changeCursor();
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
noteDao.deleteByKey(id);
Log.d("DaoExample", "Deleted note, ID: " + id);
changeCursor();
}
private void changeCursor() {
String textColumn = NoteDao.Properties.Text.columnName;
String orderBy = textColumn + " COLLATE LOCALIZED ASC";
Cursor cursor = db.query(noteDao.getTablename(),
noteDao.getAllColumns(), null, null, null, null, orderBy);
adapter.changeCursor(cursor);
adapter.notifyDataSetChanged();
}
}
|
