Java tutorial
/* * Copyright 2012 Google Inc. * * 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 net.abcdroid.devfest12.ui.phone; import net.abcdroid.devfest12.provider.ScheduleContract; import net.abcdroid.devfest12.ui.MapFragment; import net.abcdroid.devfest12.ui.SimpleSinglePaneActivity; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.LoaderManager; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; /** * A single-pane activity that shows a {@link MapFragment}. */ public class MapActivity extends SimpleSinglePaneActivity implements MapFragment.Callbacks, LoaderManager.LoaderCallbacks<Cursor> { @Override protected Fragment onCreatePane() { return new MapFragment(); } @Override public void onRoomSelected(String roomId) { Bundle loadRoomDataArgs = new Bundle(); loadRoomDataArgs.putString("room_id", roomId); // force load (don't use previously used data) getSupportLoaderManager().restartLoader(0, loadRoomDataArgs, this); } @Override public Loader<Cursor> onCreateLoader(int id, Bundle data) { return new CursorLoader(this, ScheduleContract.Rooms.buildRoomUri(data.getString("room_id")), RoomsQuery.PROJECTION, null, null, null); } @Override public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) { try { if (!cursor.moveToFirst()) { return; } Intent roomIntent = new Intent(Intent.ACTION_VIEW, ScheduleContract.Rooms.buildSessionsDirUri(cursor.getString(RoomsQuery.ROOM_ID))); roomIntent.putExtra(Intent.EXTRA_TITLE, cursor.getString(RoomsQuery.ROOM_NAME)); startActivity(roomIntent); } finally { cursor.close(); } } @Override public void onLoaderReset(Loader<Cursor> loader) { } private interface RoomsQuery { String[] PROJECTION = { ScheduleContract.Rooms.ROOM_ID, ScheduleContract.Rooms.ROOM_NAME, ScheduleContract.Rooms.ROOM_FLOOR, }; int ROOM_ID = 0; int ROOM_NAME = 1; int ROOM_FLOOR = 2; } }