Java tutorial
/* * Copyright 2011 the original author or authors. * * 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.springsource.greenhouse.events.sessions; import org.springframework.social.greenhouse.api.Event; import org.springframework.social.greenhouse.api.EventSession; import android.content.Intent; import android.os.AsyncTask; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.TextView; import com.springsource.greenhouse.AbstractGreenhouseActivity; import com.springsource.greenhouse.R; import com.springsource.greenhouse.twitter.PostTweetActivity; /** * @author Roy Clarkson */ public class EventSessionDetailsActivity extends AbstractGreenhouseActivity { private static final String TAG = EventSessionDetailsActivity.class.getSimpleName(); private Event event; private EventSession session; //*************************************** // Activity methods //*************************************** @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.event_session_details); final ListView listView = (ListView) findViewById(R.id.event_session_details_menu); String[] menu_items = getResources().getStringArray(R.array.event_session_details_options_array); ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, R.layout.menu_list_item, menu_items); listView.setAdapter(arrayAdapter); listView.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { switch (position) { case 0: new UpdateFavoriteTask().execute(); break; case 1: startActivity(new Intent(view.getContext(), EventSessionRatingActivity.class)); break; case 2: startActivity(new Intent(view.getContext(), PostTweetActivity.class)); break; case 3: startActivity(new Intent(view.getContext(), EventSessionTweetsActivity.class)); break; default: break; } } }); } @Override public void onStart() { super.onStart(); event = getApplicationContext().getSelectedEvent(); session = getApplicationContext().getSelectedSession(); refreshEventDetails(); } //*************************************** // Private methods //*************************************** private void refreshEventDetails() { if (session == null) { return; } TextView t = (TextView) findViewById(R.id.event_session_details_name); t.setText(session.getTitle()); t = (TextView) findViewById(R.id.event_session_details_leaders); t.setText(session.getJoinedLeaders(", ")); t = (TextView) findViewById(R.id.event_session_details_time_and_room); t.setText(session.getFormattedTimeSpan() + " in " + session.getRoom().getLabel()); t = (TextView) findViewById(R.id.event_session_details_rating); if (session.getRating() == 0) { t.setText("No Ratings"); } else { t.setText(session.getRating() + " Stars"); } t = (TextView) findViewById(R.id.event_session_details_description); t.setText(session.getDescription()); setFavoriteStatus(session.isFavorite()); } private void setFavoriteStatus(Boolean status) { final TextView textViewSessionFavorite = (TextView) findViewById(R.id.event_session_details_favorite); String text = status ? "Favorite: \u2713" : "Not a Favorite"; textViewSessionFavorite.setText(text); } //*************************************** // Private classes //*************************************** private class UpdateFavoriteTask extends AsyncTask<Void, Void, Boolean> { private Exception exception; @Override protected void onPreExecute() { showProgressDialog("Updating favorite ..."); } @Override protected Boolean doInBackground(Void... params) { try { if (event == null || session == null) { return false; } return getApplicationContext().getGreenhouseApi().sessionOperations() .updateFavoriteSession(event.getId(), session.getId()); } catch (Exception e) { Log.e(TAG, e.getLocalizedMessage(), e); exception = e; } return false; } @Override protected void onPostExecute(Boolean result) { dismissProgressDialog(); processException(exception); setFavoriteStatus(result); } } }