NotesList.rar_There There

package com.example.android.notepad; import android.app.ListActivity; import android.content.ComponentName; import android.content.ContentUris; import android.content.Intent; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.util.Log; import android.view.ContextMenu; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ContextMenu.ContextMenuInfo; import android.widget.AdapterView; import android.widget.ListView; import android.widget.SimpleCursorAdapter; import com.example.android.notepad.NotePad.NoteColumns; /** * Displays a list of notes. Will display notes from the {@link Uri} * provided in the intent if there is one, otherwise defaults to displaying the * contents of the {@link NoteProvider} */ public class NotesList extends ListActivity { private static final String TAG = "NotesList"; /** * The columns we are interested in from the database */ private static final String[] PROJECTION = new String[] { NoteColumns._ID, // 0 NoteColumns.TITLE, // 1 }; /** The index of the title column */ private static final int COLUMN_INDEX_TITLE = 1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setDefaultKeyMode(DEFAULT_KEYS_SHORTCUT); // If no data was given in the intent (because we were started // as a MAIN activity), then use our default content provider. Intent intent = getIntent(); if (intent.getData() == null) { intent.setData(NoteColumns.CONTENT_URI); } // Inform the list we provide context menus for items getListView().setOnCreateContextMenuListener(this); // Perform a managed query. The Activity will handle closing and requerying the cursor // when needed. Cursor cursor = managedQuery(getIntent().getData(), PROJECTION, null, null, NoteColumns.DEFAULT_SORT_ORDER); // Used to map notes entries from the database to views SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.noteslist_item, cursor, new String[] { NoteColumns.TITLE }, new int[] { android.R.id.text1 }); setListAdapter(adapter); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate menu from XML resource MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.list_options_menu, menu); // Generate any additional actions that can be performed on the // overall list. In a normal install, there are no additional // actions found here, but this allows other applications to extend // our menu with their own actions. Intent intent = new Intent(null, getIntent().getData()); intent.addCategory(Intent.CATEGORY_ALTERNATIVE); menu.addIntentOptions(Menu.CATEGORY_ALTERNATIVE, 0, 0, new ComponentName(this, NotesList.class), null, intent, 0, null); return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_add: // Launch activity to insert a new item startActivity(new Intent(Intent.ACTION_INSERT, getIntent().getData())); return true; default: return super.onOptionsItemSelected(item); } } @Override public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo menuInfo) { AdapterView.AdapterContextMenuInfo info; try { info = (AdapterView.AdapterContextMenuInfo) menuInfo; } catch (ClassCastException e) { Log.e(TAG, "bad menuInfo", e); return; } Cursor cursor = (Cursor) getListAdapter().getItem(info.position); if (cursor == null) { // For some reason the requested item isn't available, do nothing return; } // Inflate menu from XML resource MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.list_context_menu, menu); // Set the context menu header menu.setHeaderTitle(cursor.getString(COLUMN_INDEX_TITLE)); // Append to the // menu items for any other activities that can do stuff with it // as well. This does a query on the system for any activities that // implement the ALTERNATIVE_ACTION for our data, adding a menu item // for each one that is found. Intent intent = new Intent(null, Uri.withAppendedPath(getIntent().getData(), Integer.toString((int) info.id) )); intent.addCategory(Intent.CATEGORY_ALTERNATIVE); menu.addIntentOptions(Menu.CATEGORY_ALTERNATIVE, 0, 0, new ComponentName(this, NotesList.class), null, intent, 0, null); } @Override public boolean onContextItemSelected(MenuItem item) { AdapterView.AdapterContextMenuInfo info; try { info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo(); } catch (ClassCastException e) { Log.e(TAG, "bad menuInfo", e); return false; } Uri noteUri = ContentUris.withAppendedId(getIntent().getData(), info.id); switch (item.getItemId()) { case R.id.context_open: // Launch activity to view/edit the currently selected item startActivity(new Intent(Intent.ACTION_EDIT, noteUri)); return true; case R.id.context_delete: // Delete the note that the context menu is for getContentResolver().delete(noteUri, null, null); return true; default: return super.onContextItemSelected(item); } } @Override protected void onListItemClick(ListView l, View v, int position, long id) { Uri noteUri = ContentUris.withAppendedId(getIntent().getData(), id); String action = getIntent().getAction(); if (Intent.ACTION_PICK.equals(action) || Intent.ACTION_GET_CONTENT.equals(action)) { // The caller is waiting for us to return a note selected by // the user. The have clicked on one, so return it now. setResult(RESULT_OK, new Intent().setData(noteUri)); } else { // Launch activity to view/edit the currently selected item startActivity(new Intent(Intent.ACTION_EDIT, noteUri)); } } }