1 /* 2 * Copyright (C) 2008 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.demo.notepad3; 18 19 import android.app.Activity; 20 import android.database.Cursor; 21 import android.os.Bundle; 22 import android.view.View; 23 import android.widget.Button; 24 import android.widget.EditText; 25 26 public class NoteEdit extends Activity { 27 28 private EditText mTitleText; 29 private EditText mBodyText; 30 private Long mRowId; 31 private NotesDbAdapter mDbHelper; 32 33 @Override onCreate(Bundle savedInstanceState)34 protected void onCreate(Bundle savedInstanceState) { 35 super.onCreate(savedInstanceState); 36 mDbHelper = new NotesDbAdapter(this); 37 mDbHelper.open(); 38 39 setContentView(R.layout.note_edit); 40 setTitle(R.string.edit_note); 41 42 mTitleText = (EditText) findViewById(R.id.title); 43 mBodyText = (EditText) findViewById(R.id.body); 44 45 Button confirmButton = (Button) findViewById(R.id.confirm); 46 47 mRowId = (savedInstanceState == null) ? null : 48 (Long) savedInstanceState.getSerializable(NotesDbAdapter.KEY_ROWID); 49 if (mRowId == null) { 50 Bundle extras = getIntent().getExtras(); 51 mRowId = extras != null ? extras.getLong(NotesDbAdapter.KEY_ROWID) 52 : null; 53 } 54 55 populateFields(); 56 57 confirmButton.setOnClickListener(new View.OnClickListener() { 58 59 public void onClick(View view) { 60 setResult(RESULT_OK); 61 finish(); 62 } 63 64 }); 65 } 66 populateFields()67 private void populateFields() { 68 if (mRowId != null) { 69 Cursor note = mDbHelper.fetchNote(mRowId); 70 startManagingCursor(note); 71 mTitleText.setText(note.getString( 72 note.getColumnIndexOrThrow(NotesDbAdapter.KEY_TITLE))); 73 mBodyText.setText(note.getString( 74 note.getColumnIndexOrThrow(NotesDbAdapter.KEY_BODY))); 75 } 76 } 77 78 @Override onSaveInstanceState(Bundle outState)79 protected void onSaveInstanceState(Bundle outState) { 80 super.onSaveInstanceState(outState); 81 saveState(); 82 outState.putSerializable(NotesDbAdapter.KEY_ROWID, mRowId); 83 } 84 85 @Override onPause()86 protected void onPause() { 87 super.onPause(); 88 saveState(); 89 } 90 91 @Override onResume()92 protected void onResume() { 93 super.onResume(); 94 populateFields(); 95 } 96 saveState()97 private void saveState() { 98 String title = mTitleText.getText().toString(); 99 String body = mBodyText.getText().toString(); 100 101 if (mRowId == null) { 102 long id = mDbHelper.createNote(title, body); 103 if (id > 0) { 104 mRowId = id; 105 } 106 } else { 107 mDbHelper.updateNote(mRowId, title, body); 108 } 109 } 110 111 } 112