| /* |
| * Copyright (C) 2009 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.example.android.simplewiktionary; |
| |
| import com.example.android.simplewiktionary.SimpleWikiHelper.ApiException; |
| import com.example.android.simplewiktionary.SimpleWikiHelper.ParseException; |
| |
| import android.app.PendingIntent; |
| import android.app.Service; |
| import android.appwidget.AppWidgetManager; |
| import android.appwidget.AppWidgetProvider; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.res.Resources; |
| import android.net.Uri; |
| import android.os.IBinder; |
| import android.text.format.Time; |
| import android.util.Log; |
| import android.widget.RemoteViews; |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * Define a simple widget that shows the Wiktionary "Word of the day." To build |
| * an update we spawn a background {@link Service} to perform the API queries. |
| */ |
| public class WordWidget extends AppWidgetProvider { |
| @Override |
| public void onUpdate(Context context, AppWidgetManager appWidgetManager, |
| int[] appWidgetIds) { |
| // To prevent any ANR timeouts, we perform the update in a service |
| context.startService(new Intent(context, UpdateService.class)); |
| } |
| |
| public static class UpdateService extends Service { |
| @Override |
| public void onStart(Intent intent, int startId) { |
| // Build the widget update for today |
| RemoteViews updateViews = buildUpdate(this); |
| |
| // Push update for this widget to the home screen |
| ComponentName thisWidget = new ComponentName(this, WordWidget.class); |
| AppWidgetManager manager = AppWidgetManager.getInstance(this); |
| manager.updateAppWidget(thisWidget, updateViews); |
| } |
| |
| /** |
| * Build a widget update to show the current Wiktionary |
| * "Word of the day." Will block until the online API returns. |
| */ |
| public RemoteViews buildUpdate(Context context) { |
| // Pick out month names from resources |
| Resources res = context.getResources(); |
| String[] monthNames = res.getStringArray(R.array.month_names); |
| |
| // Find current month and day |
| Time today = new Time(); |
| today.setToNow(); |
| |
| // Build today's page title, like "Wiktionary:Word of the day/March 21" |
| String pageName = res.getString(R.string.template_wotd_title, |
| monthNames[today.month], today.monthDay); |
| RemoteViews updateViews = null; |
| String pageContent = ""; |
| |
| try { |
| // Try querying the Wiktionary API for today's word |
| SimpleWikiHelper.prepareUserAgent(context); |
| pageContent = SimpleWikiHelper.getPageContent(pageName, false); |
| } catch (ApiException e) { |
| Log.e("WordWidget", "Couldn't contact API", e); |
| } catch (ParseException e) { |
| Log.e("WordWidget", "Couldn't parse API response", e); |
| } |
| |
| // Use a regular expression to parse out the word and its definition |
| Pattern pattern = Pattern.compile(SimpleWikiHelper.WORD_OF_DAY_REGEX); |
| Matcher matcher = pattern.matcher(pageContent); |
| if (matcher.find()) { |
| // Build an update that holds the updated widget contents |
| updateViews = new RemoteViews(context.getPackageName(), R.layout.widget_word); |
| |
| String wordTitle = matcher.group(1); |
| updateViews.setTextViewText(R.id.word_title, wordTitle); |
| updateViews.setTextViewText(R.id.word_type, matcher.group(2)); |
| updateViews.setTextViewText(R.id.definition, matcher.group(3).trim()); |
| |
| // When user clicks on widget, launch to Wiktionary definition page |
| String definePage = res.getString(R.string.template_define_url, |
| Uri.encode(wordTitle)); |
| Intent defineIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(definePage)); |
| PendingIntent pendingIntent = PendingIntent.getActivity(context, |
| 0 /* no requestCode */, defineIntent, 0 /* no flags */); |
| updateViews.setOnClickPendingIntent(R.id.widget, pendingIntent); |
| |
| } else { |
| // Didn't find word of day, so show error message |
| updateViews = new RemoteViews(context.getPackageName(), R.layout.widget_message); |
| CharSequence errorMessage = context.getText(R.string.widget_error); |
| updateViews.setTextViewText(R.id.message, errorMessage); |
| } |
| return updateViews; |
| } |
| |
| @Override |
| public IBinder onBind(Intent intent) { |
| // We don't need to bind to this service |
| return null; |
| } |
| } |
| } |