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.notepad2; 18 19 import android.app.ListActivity; 20 import android.content.Intent; 21 import android.database.Cursor; 22 import android.os.Bundle; 23 import android.view.ContextMenu; 24 import android.view.Menu; 25 import android.view.MenuItem; 26 import android.view.View; 27 import android.view.ContextMenu.ContextMenuInfo; 28 import android.widget.ListView; 29 import android.widget.SimpleCursorAdapter; 30 import android.widget.AdapterView.AdapterContextMenuInfo; 31 32 public class Notepadv2 extends ListActivity { 33 private static final int ACTIVITY_CREATE=0; 34 private static final int ACTIVITY_EDIT=1; 35 36 private static final int INSERT_ID = Menu.FIRST; 37 private static final int DELETE_ID = Menu.FIRST + 1; 38 39 private NotesDbAdapter mDbHelper; 40 private Cursor mNotesCursor; 41 42 /** Called when the activity is first created. */ 43 @Override onCreate(Bundle savedInstanceState)44 public void onCreate(Bundle savedInstanceState) { 45 super.onCreate(savedInstanceState); 46 setContentView(R.layout.notes_list); 47 mDbHelper = new NotesDbAdapter(this); 48 mDbHelper.open(); 49 fillData(); 50 registerForContextMenu(getListView()); 51 } 52 fillData()53 private void fillData() { 54 // Get all of the rows from the database and create the item list 55 mNotesCursor = mDbHelper.fetchAllNotes(); 56 startManagingCursor(mNotesCursor); 57 58 // Create an array to specify the fields we want to display in the list (only TITLE) 59 String[] from = new String[]{NotesDbAdapter.KEY_TITLE}; 60 61 // and an array of the fields we want to bind those fields to (in this case just text1) 62 int[] to = new int[]{R.id.text1}; 63 64 // Now create a simple cursor adapter and set it to display 65 SimpleCursorAdapter notes = 66 new SimpleCursorAdapter(this, R.layout.notes_row, mNotesCursor, from, to); 67 setListAdapter(notes); 68 } 69 70 @Override onCreateOptionsMenu(Menu menu)71 public boolean onCreateOptionsMenu(Menu menu) { 72 super.onCreateOptionsMenu(menu); 73 menu.add(0, INSERT_ID, 0, R.string.menu_insert); 74 return true; 75 } 76 77 @Override onMenuItemSelected(int featureId, MenuItem item)78 public boolean onMenuItemSelected(int featureId, MenuItem item) { 79 switch(item.getItemId()) { 80 case INSERT_ID: 81 createNote(); 82 return true; 83 } 84 85 return super.onMenuItemSelected(featureId, item); 86 } 87 88 @Override onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo)89 public void onCreateContextMenu(ContextMenu menu, View v, 90 ContextMenuInfo menuInfo) { 91 super.onCreateContextMenu(menu, v, menuInfo); 92 menu.add(0, DELETE_ID, 0, R.string.menu_delete); 93 } 94 95 @Override onContextItemSelected(MenuItem item)96 public boolean onContextItemSelected(MenuItem item) { 97 switch(item.getItemId()) { 98 case DELETE_ID: 99 AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); 100 mDbHelper.deleteNote(info.id); 101 fillData(); 102 return true; 103 } 104 return super.onContextItemSelected(item); 105 } 106 createNote()107 private void createNote() { 108 Intent i = new Intent(this, NoteEdit.class); 109 startActivityForResult(i, ACTIVITY_CREATE); 110 } 111 112 @Override onListItemClick(ListView l, View v, int position, long id)113 protected void onListItemClick(ListView l, View v, int position, long id) { 114 super.onListItemClick(l, v, position, id); 115 Cursor c = mNotesCursor; 116 c.moveToPosition(position); 117 Intent i = new Intent(this, NoteEdit.class); 118 i.putExtra(NotesDbAdapter.KEY_ROWID, id); 119 i.putExtra(NotesDbAdapter.KEY_TITLE, c.getString( 120 c.getColumnIndexOrThrow(NotesDbAdapter.KEY_TITLE))); 121 i.putExtra(NotesDbAdapter.KEY_BODY, c.getString( 122 c.getColumnIndexOrThrow(NotesDbAdapter.KEY_BODY))); 123 startActivityForResult(i, ACTIVITY_EDIT); 124 } 125 126 @Override onActivityResult(int requestCode, int resultCode, Intent intent)127 protected void onActivityResult(int requestCode, int resultCode, Intent intent) { 128 super.onActivityResult(requestCode, resultCode, intent); 129 Bundle extras = intent.getExtras(); 130 switch(requestCode) { 131 case ACTIVITY_CREATE: 132 String title = extras.getString(NotesDbAdapter.KEY_TITLE); 133 String body = extras.getString(NotesDbAdapter.KEY_BODY); 134 mDbHelper.createNote(title, body); 135 fillData(); 136 break; 137 case ACTIVITY_EDIT: 138 Long rowId = extras.getLong(NotesDbAdapter.KEY_ROWID); 139 if (rowId != null) { 140 String editTitle = extras.getString(NotesDbAdapter.KEY_TITLE); 141 String editBody = extras.getString(NotesDbAdapter.KEY_BODY); 142 mDbHelper.updateNote(rowId, editTitle, editBody); 143 } 144 fillData(); 145 break; 146 } 147 } 148 } 149