Android Open Source - salaya-tram-map Tram Schedule Widget Provider

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License

The source code is released under:

Unless otherwise noted, this software is Copyright 2011 Pawit Pornkitprasan and is licensed under the Simplified BSD License. Copyright 2011 Pawit Pornkitprasan. All rights reserved. Red...

Java Source Code

package org.dyndns.pawitp.salayatrammap;
// w w w  .ja v a 2 s.c om
import org.dyndns.pawitp.salayatrammap.schedule.NoMoreTramException;
import org.dyndns.pawitp.salayatrammap.schedule.TramCarSchedule;
import org.dyndns.pawitp.salayatrammap.schedule.TramException;
import org.dyndns.pawitp.salayatrammap.schedule.TramsSchedule;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.RemoteViews;

public class TramScheduleWidgetProvider extends AppWidgetProvider {
  
  private static final String TAG = "TramScheduleWidgetProvider";
  
  public static final String UPDATE_INTENT = "org.dyndns.pawitp.salayatrammap.UPDATE_WIDGET";
  
  @Override
  public void onUpdate(Context context, AppWidgetManager appWidgetManager,
      int[] appWidgetIds) {
    Log.v(TAG, "onUpdate");
    
    updateWidgets(context, appWidgetManager, appWidgetIds); // Ids passed here can be a single id if another widget is added
  }
  
  @Override
  public void onReceive(Context context, Intent intent) {
    Log.v(TAG, "onReceive");
    
    if (UPDATE_INTENT.equals(intent.getAction())) {
      Log.v(TAG, "onReceive: UPDATE_INTENT");
      
      AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
      ComponentName componentName = new ComponentName(context.getPackageName(), TramScheduleWidgetProvider.class.getName());
      updateWidgets(context, appWidgetManager, appWidgetManager.getAppWidgetIds(componentName));
    }
    else {    
      super.onReceive(context, intent);
    }
  }
  
  @Override
  public void onEnabled(Context context) {
    MiscWidgetBroadcastReceiver.setEnabled(context, true);
  }

  @Override
  public void onDisabled(Context context) {
    Log.v(TAG, "onDisabled");
    
    MiscWidgetBroadcastReceiver.setEnabled(context, false);
    
    Intent i = new Intent(UPDATE_INTENT);
    PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
    AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    am.cancel(pi);
  }
  
  private static void updateWidgets(Context context, AppWidgetManager appWidgetManager,
      int[] updateAppWidgetIds) {
    // For launching application
    Intent intent = new Intent(context, MainActivity.class);
    PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);

    RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget);
    views.setOnClickPendingIntent(R.id.widgetLayout, pendingIntent);
    
    // Update
    TramsSchedule tramsSchedule = new TramsSchedule(context);
    tramsSchedule.updateSchedules();
    
    updateTramTime(context, tramsSchedule, views, TramsSchedule.TRAM_GREEN, R.id.txtTramLeftGreen, R.id.txtTramNextGreen);
    updateTramTime(context, tramsSchedule, views, TramsSchedule.TRAM_BLUE, R.id.txtTramLeftBlue, R.id.txtTramNextBlue);
    updateTramTime(context, tramsSchedule, views, TramsSchedule.TRAM_RED, R.id.txtTramLeftRed, R.id.txtTramNextRed);
    
    // Not sure why anyone would want multiple widgets, but..
    final int len = updateAppWidgetIds.length;
    for (int i = 0; i < len; i++) {
      appWidgetManager.updateAppWidget(updateAppWidgetIds[i], views);
    }
    
    // Set alarm
    AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    long time = System.currentTimeMillis() + tramsSchedule.getNextUpdateTime();
    
    Intent i = new Intent(UPDATE_INTENT);
    PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
    
    am.set(AlarmManager.RTC, time, pi);
  }
  
  private static void updateTramTime(Context context, TramsSchedule tramsSchedule,
      RemoteViews views, int tramId, int idLeft, int idNext) {
    TramCarSchedule schedule = tramsSchedule.getSchedule(tramId);
    
    try {
      views.setTextViewText(idNext, Utils.formatTime(context, schedule.getNextTram()));
    } catch (NoMoreTramException e) {
      views.setTextViewText(idNext, context.getString(R.string.no_tram));
    }
    
    try {
      views.setTextViewText(idLeft, Utils.formatTime(context, schedule.getLastTram()));
    } catch (TramException e) {
      views.setTextViewText(idLeft, context.getString(R.string.no_tram));
    }
  }
}

Java Source Code List

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