안드로이드 프로그래밍 008 - Notepadv3_2

이제 소스를 분석해 봅니다.
1. Notepadv3.java

package com.android.demo.notepad3; import android.app.ListActivity; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.view.ContextMenu; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ContextMenu.ContextMenuInfo; import android.widget.ListView; import android.widget.SimpleCursorAdapter; import android.widget.AdapterView.AdapterContextMenuInfo; public class Notepadv3 extends ListActivity { private static final int ACTIVITY_CREATE=0; private static final int ACTIVITY_EDIT=1; private static final int INSERT_ID = Menu.FIRST; private static final int DELETE_ID = Menu.FIRST + 1; private NotesDbAdapter mDbHelper; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.notes_list); mDbHelper = new NotesDbAdapter(this); mDbHelper.open(); fillData(); // 모든 데이터를 가져와 ListView 넣고 registerForContextMenu(getListView()); // 길게 누르는 이벤트를 위한 메소드인거 같죠? } private void fillData() { Cursor notesCursor = mDbHelper.fetchAllNotes(); // Get all of the rows from the database and create the item list startManagingCursor(notesCursor); // Create an array to specify the fields we want to display in the list (only TITLE) String[] from = new String[]{NotesDbAdapter.KEY_TITLE}; // and an array of the fields we want to bind those fields to (in this case just text1) int[] to = new int[]{R.id.text1}; // Now create a simple cursor adapter and set it to display SimpleCursorAdapter notes = new SimpleCursorAdapter(this, R.layout.notes_row, notesCursor, from, to); setListAdapter(notes); } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); menu.add(0, INSERT_ID, 0, R.string.menu_insert); return true; } @Override public boolean onMenuItemSelected(int featureId, MenuItem item) { switch(item.getItemId()) { case INSERT_ID: createNote(); return true; } return super.onMenuItemSelected(featureId, item); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); menu.add(0, DELETE_ID, 0, R.string.menu_delete); } @Override public boolean onContextItemSelected(MenuItem item) { switch(item.getItemId()) { case DELETE_ID: AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); mDbHelper.deleteNote(info.id); fillData(); return true; } return super.onContextItemSelected(item); } private void createNote() { Intent i = new Intent(this, NoteEdit.class); startActivityForResult(i, ACTIVITY_CREATE); } @Override protected void onListItemClick(ListView l, View v, int position, long id) { // ListView에 있는 item들에게 기능부여를 하고 super.onListItemClick(l, v, position, id); Intent i = new Intent(this, NoteEdit.class); i.putExtra(NotesDbAdapter.KEY_ROWID, id); startActivityForResult(i, ACTIVITY_EDIT); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); fillData(); // 결과값을 받아서 디비에 넣는 코드는 사라졌습니다. } }
2. NoteEdit.java

package com.android.demo.notepad3; import android.app.Activity; import android.database.Cursor; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; public class NoteEdit extends Activity { private EditText mTitleText; private EditText mBodyText; private Long mRowId; private NotesDbAdapter mDbHelper; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mDbHelper = new NotesDbAdapter(this); mDbHelper.open(); setContentView(R.layout.note_edit); mTitleText = (EditText) findViewById(R.id.title); mBodyText = (EditText) findViewById(R.id.body); Button confirmButton = (Button) findViewById(R.id.confirm); mRowId = savedInstanceState != null ? savedInstanceState.getLong(NotesDbAdapter.KEY_ROWID) : null; if (mRowId == null) { Bundle extras = getIntent().getExtras(); mRowId = extras != null ? extras.getLong(NotesDbAdapter.KEY_ROWID) : null; } populateFields(); confirmButton.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { setResult(RESULT_OK); finish(); } }); } private void populateFields() { if (mRowId != null) { Cursor note = mDbHelper.fetchNote(mRowId); startManagingCursor(note); mTitleText.setText(note.getString( note.getColumnIndexOrThrow(NotesDbAdapter.KEY_TITLE))); mBodyText.setText(note.getString( note.getColumnIndexOrThrow(NotesDbAdapter.KEY_BODY))); } } @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putLong(NotesDbAdapter.KEY_ROWID, mRowId); } @Override protected void onPause() { super.onPause(); saveState(); } private void saveState() { String title = mTitleText.getText().toString(); String body = mBodyText.getText().toString(); if (mRowId == null) { long id = mDbHelper.createNote(title, body); if (id > 0) { mRowId = id; } } else { mDbHelper.updateNote(mRowId, title, body); } } @Override protected void onResume() { super.onResume(); populateFields(); } }
나머지는 v2와 동일하네요.

이제 맘에 드는 메모장이 완성되었네요....JSP/Servlet 배울 때 혼자 게시판 맹글었을 때의 그 뿌듯함이 드는 건 왜 일까요? ㅋㅋㅋ