| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.apps.tag; |
| |
| import android.app.Activity; |
| import android.app.AlertDialog; |
| import android.app.Dialog; |
| import android.app.ListActivity; |
| import android.content.DialogInterface; |
| import android.content.Intent; |
| import android.database.Cursor; |
| import android.database.sqlite.SQLiteDatabase; |
| import android.nfc.FormatException; |
| import android.nfc.NdefMessage; |
| import android.os.AsyncTask; |
| import android.os.Bundle; |
| import android.util.Log; |
| import android.view.Menu; |
| import android.view.View; |
| import android.widget.ListView; |
| |
| import com.android.apps.tag.TagDBHelper.NdefMessagesTable; |
| |
| /** |
| * An {@link Activity} that displays a flat list of tags that can be "opened". |
| */ |
| public class TagList extends ListActivity implements DialogInterface.OnClickListener { |
| static final String TAG = "TagList"; |
| |
| static final String EXTRA_SHOW_STARRED_ONLY = "show_starred_only"; |
| |
| SQLiteDatabase mDatabase; |
| TagAdapter mAdapter; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| boolean showStarredOnly = getIntent().getBooleanExtra(EXTRA_SHOW_STARRED_ONLY, false); |
| mDatabase = TagDBHelper.getInstance(this).getReadableDatabase(); |
| String selection = showStarredOnly ? NdefMessagesTable.STARRED + "=1" : null; |
| |
| new TagLoaderTask().execute(selection); |
| mAdapter = new TagAdapter(this); |
| setListAdapter(mAdapter); |
| registerForContextMenu(getListView()); |
| } |
| |
| @Override |
| public boolean onCreateOptionsMenu(Menu menu) { |
| super.onCreateOptionsMenu(menu); |
| menu.add("hello world"); |
| return true; |
| } |
| |
| @Override |
| protected Dialog onCreateDialog(int id, Bundle args) { |
| String[] stuff = new String[] { "a", "b" }; |
| return new AlertDialog.Builder(this) |
| .setTitle("blah") |
| .setItems(stuff, this) |
| .setPositiveButton("Delete", null) |
| .setNegativeButton("Cancel", null) |
| .create(); |
| } |
| |
| @Override |
| protected void onDestroy() { |
| if (mAdapter != null) { |
| mAdapter.changeCursor(null); |
| } |
| super.onDestroy(); |
| } |
| |
| @Override |
| protected void onListItemClick(ListView l, View v, int position, long id) { |
| Cursor cursor = mAdapter.getCursor(); |
| cursor.moveToPosition(position); |
| byte[] tagBytes = cursor.getBlob(cursor.getColumnIndexOrThrow(NdefMessagesTable.BYTES)); |
| try { |
| NdefMessage msg = new NdefMessage(tagBytes); |
| Intent intent = new Intent(this, TagViewer.class); |
| intent.putExtra(TagViewer.EXTRA_MESSAGE, msg); |
| intent.putExtra(TagViewer.EXTRA_TAG_DB_ID, id); |
| startActivity(intent); |
| } catch (FormatException e) { |
| Log.e(TAG, "bad format for tag " + id + ": " + tagBytes, e); |
| return; |
| } |
| } |
| |
| @Override |
| public void onClick(DialogInterface dialog, int which) { |
| } |
| |
| final class TagLoaderTask extends AsyncTask<String, Void, Cursor> { |
| @Override |
| public Cursor doInBackground(String... args) { |
| String selection = args[0]; |
| Cursor cursor = mDatabase.query( |
| NdefMessagesTable.TABLE_NAME, |
| new String[] { |
| NdefMessagesTable._ID, |
| NdefMessagesTable.BYTES, |
| NdefMessagesTable.DATE, |
| NdefMessagesTable.TITLE }, |
| selection, |
| null, null, null, NdefMessagesTable.DATE + " DESC"); |
| cursor.getCount(); |
| return cursor; |
| } |
| |
| @Override |
| protected void onPostExecute(Cursor cursor) { |
| mAdapter.changeCursor(cursor); |
| } |
| } |
| } |