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.twitter; import java.text.SimpleDateFormat; import org.springframework.http.HttpStatus; import org.springframework.social.greenhouse.api.Event; import org.springframework.social.greenhouse.api.EventSession; import org.springframework.social.greenhouse.api.Tweet; import org.springframework.web.client.HttpClientErrorException; import android.app.AlertDialog; import android.content.DialogInterface; 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; /** * @author Roy Clarkson */ public class TweetDetailsActivity extends AbstractGreenhouseActivity { protected static final String TAG = TweetDetailsActivity.class.getSimpleName(); private Event event; private EventSession session; private Tweet tweet; //*************************************** // Activity methods //*************************************** @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); this.setContentView(R.layout.tweet_details); final ListView listView = (ListView) findViewById(R.id.tweet_details_menu); String[] menu_items = getResources().getStringArray(R.array.tweet_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: Intent replyIntent = new Intent(view.getContext(), PostTweetActivity.class); replyIntent.putExtra("reply", tweet.getFromUser()); startActivity(replyIntent); break; case 1: showRetweetDialog(); break; case 2: Intent quoteIntent = new Intent(view.getContext(), PostTweetActivity.class); String quote = new StringBuilder().append("\"@").append(tweet.getFromUser()).append(" ") .append(tweet.getText()).append("\"").toString(); quoteIntent.putExtra("quote", quote); startActivity(quoteIntent); break; default: break; } } }); } @Override public void onStart() { super.onStart(); event = getApplicationContext().getSelectedEvent(); session = getApplicationContext().getSelectedSession(); tweet = getApplicationContext().getSelectedTweet(); refreshTweetDetails(); } //*************************************** // Private methods //*************************************** private void refreshTweetDetails() { if (tweet == null) { return; } TextView t = (TextView) findViewById(R.id.tweet_details_fromuser); t.setText(tweet.getFromUser()); t = (TextView) findViewById(R.id.tweet_details_time); t.setText(new SimpleDateFormat("MMM d h:mm a").format(tweet.getCreatedAt())); t = (TextView) findViewById(R.id.tweet_details_text); t.setText(tweet.getText()); } private void showRetweetDialog() { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage("Are you sure you want to Retweet?").setCancelable(false) .setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { retweet(); } }).setNegativeButton("No", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alert = builder.create(); alert.show(); } private void retweet() { new RetweetTask().execute(); } private void showResult(String result) { // Toast.makeText(this, result, Toast.LENGTH_LONG).show(); AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage(result); builder.setCancelable(false); builder.setPositiveButton("OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alert = builder.create(); alert.show(); } //*************************************** // Private classes //*************************************** private class RetweetTask extends AsyncTask<Void, Void, String> { private Exception exception; @Override protected void onPreExecute() { showProgressDialog("Retweeting..."); } @Override protected String doInBackground(Void... params) { try { if (session != null) { getApplicationContext().getGreenhouseApi().tweetOperations() .retweetForEventSession(event.getId(), session.getId(), tweet.getId()); } else { getApplicationContext().getGreenhouseApi().tweetOperations().retweetForEvent(event.getId(), tweet.getId()); } return "Thank you for tweeting about this event!"; } catch (HttpClientErrorException e) { if (e.getStatusCode() == HttpStatus.PRECONDITION_FAILED) { return "Your account is not connected to Twitter. Please sign in to greenhouse.springsource.org to connect."; } else { Log.e(TAG, e.getLocalizedMessage(), e); return "A problem occurred while posting to Twitter. Please verify your account is connected at greenhouse.springsource.org."; } } catch (Exception e) { Log.e(TAG, e.getLocalizedMessage(), e); return "A problem occurred while posting to Twitter. Please verify your account is connected at greenhouse.springsource.org."; } } @Override protected void onPostExecute(String result) { dismissProgressDialog(); processException(exception); showResult(result); } } }