Android Open Source - weatherWidget Usefull Functions

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License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * @file/* w w  w  .  j a v a  2s  .c o  m*/
 */
package weather.widget.utils;

import android.app.Activity;
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.widget.RemoteViews;
import weather.widget.R;
import weather.widget.WeatherWidgetActivity;
import weather.widget.graph.WeatherGraphView;
import weather.widget.settings.Settingsmenu;

/**
 * UsefullFunctions class.\n
 * prepare functions who are used in different classes.
 * @author Max
 *
 */
public class UsefullFunctions {
  
  private UpdateWidgetService _activity = null;  /**< own private variable for updateWidget class */
  private Activity act = null;          /**< contains activity which calls this class */
  
  /**
   * special constructor for UpdateWidgetService (it is just a service and not a activity).
   * @param activity  UpdateWidgetService
   */
  public UsefullFunctions(UpdateWidgetService activity){
    _activity = activity;
  }
  
  /**
   * constructor for each other activity.
   * @param activity  normal Activity
   */
  public UsefullFunctions(Activity activity){
    act = activity;
  }
  
  /**
   * constructor without any parameter (used in MyWebservice)
   */
  public UsefullFunctions(){
    
  }
  
  /**
   * small function to return chosen menu.
   * @param selected MenuItem
   * @return new intent to start new activity
   */
  public Intent getMenuIntent(int selected){
    Intent returnIntent = null;
    switch (selected) {
      case R.id.MenuSettings:    returnIntent = new Intent(act.getApplicationContext(), Settingsmenu.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                        break;
    }
    return returnIntent;
  }
  
  /**
   * check if a WLAN or MOBILE network connection is available.
     * 
     * @return true if a network connection is available (else false)
     */
    public boolean haveNetworkConnection() {
            boolean haveConnectedWifi = false;
            boolean haveConnectedMobile = false;

            ConnectivityManager cm = (ConnectivityManager) _activity.getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo[] netInfo = cm.getAllNetworkInfo();
            for (NetworkInfo ni : netInfo) {
                    if (ni.getTypeName().equalsIgnoreCase("WIFI"))
                            if (ni.isConnected())
                                    haveConnectedWifi = true;
                    if (ni.getTypeName().equalsIgnoreCase("MOBILE"))
                            if (ni.isConnected())
                                    haveConnectedMobile = true;
            }
            return haveConnectedWifi || haveConnectedMobile;
    }
    
    /**
     * update all widgets
     * @param allWidgetIds int array of all widget identifiers
     * @param context context of update class
     * @param manager AppWidgetManager
     * @param dbHelper to get a open database
     */
    public void widgetUpdate(int[] allWidgetIds, Context context, AppWidgetManager manager, DataBaseHelper dbHelper){
      for (int widgetId : allWidgetIds){
      RemoteViews remoteViews = new RemoteViews(context.getPackageName(),
          R.layout.widget_layout);
      
      /** 
       * update Date
       */
      String date = dbHelper.getDate();
      if(date != null)
        remoteViews.setTextViewText(R.id.date, date);
      
      /**
       * get values out of database
       */
      String value = dbHelper.getValueActual();
      if(value != null || !"".equals(value))
        remoteViews.setTextViewText(R.id.tempValue, value);
      
      /**
       * paint black font color.
       */
      remoteViews.setTextColor(R.id.date, Color.BLACK);
      remoteViews.setTextColor(R.id.tempValue, Color.BLACK);
      
      /**
       * activate sync button in widget
       */
      Intent clickIntent = new Intent(context, WeatherWidgetActivity.class);
      clickIntent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
      clickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, allWidgetIds);
      
      PendingIntent pendingIntent = PendingIntent.getBroadcast(
          context, 0, clickIntent,
          PendingIntent.FLAG_UPDATE_CURRENT);
      
      remoteViews.setOnClickPendingIntent(R.id.buttonSynchronize, pendingIntent);

      /**
       * activate graph activity if widget is clicked
       */
      Intent settingsIntent = new Intent(context, WeatherGraphView.class);
      PendingIntent setIntent  = PendingIntent.getActivity(context, 0, settingsIntent, 0);
      remoteViews.setOnClickPendingIntent(R.id.tempValue, setIntent);
      remoteViews.setOnClickPendingIntent(R.id.date, setIntent);

      /* Idee fr Alarm um krzer als 30 min das Widget upzudaten */
      // AlarmManager _alarm = null;
      //_alarm.cancel(pendingIntent);
      //long interval = 1000 * 60 * 5; // 5 Minuten
      /*long interval = 1000 * 60 * 20; // 20 min
      _alarm.setRepeating(AlarmManager.ELAPSED_REALTIME,
          SystemClock.elapsedRealtime(), interval, pendingIntent);
      */
      
      manager.updateAppWidget(widgetId, remoteViews);
      
    }
      dbHelper.close();
    }


}

Java Source Code List

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