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      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.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 Notepadv3 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 
     41     /** Called when the activity is first created. */
     42     @Override
     43     public void onCreate(Bundle savedInstanceState) {
     44         super.onCreate(savedInstanceState);
     45         setContentView(R.layout.notes_list);
     46         mDbHelper = new NotesDbAdapter(this);
     47         mDbHelper.open();
     48         fillData();
     49         registerForContextMenu(getListView());
     50     }
     51 
     52     private void fillData() {
     53         Cursor notesCursor = mDbHelper.fetchAllNotes();
     54         startManagingCursor(notesCursor);
     55 
     56         // Create an array to specify the fields we want to display in the list (only TITLE)
     57         String[] from = new String[]{NotesDbAdapter.KEY_TITLE};
     58 
     59         // and an array of the fields we want to bind those fields to (in this case just text1)
     60         int[] to = new int[]{R.id.text1};
     61 
     62         // Now create a simple cursor adapter and set it to display
     63         SimpleCursorAdapter notes =
     64             new SimpleCursorAdapter(this, R.layout.notes_row, notesCursor, from, to);
     65         setListAdapter(notes);
     66     }
     67 
     68     @Override
     69     public boolean onCreateOptionsMenu(Menu menu) {
     70         super.onCreateOptionsMenu(menu);
     71         menu.add(0, INSERT_ID, 0, R.string.menu_insert);
     72         return true;
     73     }
     74 
     75     @Override
     76     public boolean onMenuItemSelected(int featureId, MenuItem item) {
     77         switch(item.getItemId()) {
     78             case INSERT_ID:
     79                 createNote();
     80                 return true;
     81         }
     82 
     83         return super.onMenuItemSelected(featureId, item);
     84     }
     85 
     86     @Override
     87     public void onCreateContextMenu(ContextMenu menu, View v,
     88             ContextMenuInfo menuInfo) {
     89         super.onCreateContextMenu(menu, v, menuInfo);
     90         menu.add(0, DELETE_ID, 0, R.string.menu_delete);
     91     }
     92 
     93     @Override
     94     public boolean onContextItemSelected(MenuItem item) {
     95         switch(item.getItemId()) {
     96             case DELETE_ID:
     97                 AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
     98                 mDbHelper.deleteNote(info.id);
     99                 fillData();
    100                 return true;
    101         }
    102         return super.onContextItemSelected(item);
    103     }
    104 
    105     private void createNote() {
    106         Intent i = new Intent(this, NoteEdit.class);
    107         startActivityForResult(i, ACTIVITY_CREATE);
    108     }
    109 
    110     @Override
    111     protected void onListItemClick(ListView l, View v, int position, long id) {
    112         super.onListItemClick(l, v, position, id);
    113         Intent i = new Intent(this, NoteEdit.class);
    114         i.putExtra(NotesDbAdapter.KEY_ROWID, id);
    115         startActivityForResult(i, ACTIVITY_EDIT);
    116     }
    117 
    118     @Override
    119     protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
    120         super.onActivityResult(requestCode, resultCode, intent);
    121         fillData();
    122     }
    123 }
    124