Android Open Source - android-note-widget App Widget Service

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Back to project page android-note-widget.

License

The source code is released under:

Apache License

Java Source Code

package com.demondevelopers.notewidget;
//from w w w . j  a  va  2 s  .  c  o m
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Service;
import android.appwidget.AppWidgetManager;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;


public abstract class AppWidgetService extends Service
{
  private static final String ACTION_UPDATE          = AppWidgetService.class.getCanonicalName() + ".UPDATE";
  private static final String ACTION_DELETED         = AppWidgetService.class.getCanonicalName() + ".DELETED";
  private static final String ACTION_OPTIONS_CHANGED = AppWidgetService.class.getCanonicalName() + ".OPTIONS_CHANGED";
  
  private AppWidgetManager  mAppWidgetManager;
  
  
  @Override
  public void onCreate()
  {
    super.onCreate();
    mAppWidgetManager = AppWidgetManager.getInstance(this);
    // Service might have been killed and restarted, go get details of widgets from manager and populate locals
  }
  
  protected abstract void onUpdate(int[] appWidgetIds);
  protected abstract void onDeleted(int[] appWidgetIds);
  protected abstract void onOptionsChanged(int appWidgetId, Bundle newOptions);
  
  protected AppWidgetManager getAppWidgetManager()
  {
    return mAppWidgetManager;
  }
  
  @Override
  public void onDestroy()
  {
    super.onDestroy();
    mAppWidgetManager = null;
  }
  
  @SuppressLint("InlinedApi")
  @Override
  public int onStartCommand(Intent intent, int flags, int startId)
  {
    if(intent != null){
      final String action = intent.getAction();
      if(ACTION_UPDATE.equals(action)){
        onUpdate(intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS));
      }
      else if(ACTION_DELETED.equals(action)){
        onDeleted(intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS));
      }
      else if(ACTION_OPTIONS_CHANGED.equals(action)){
        onOptionsChanged(intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, 0), 
          intent.getBundleExtra(AppWidgetManager.EXTRA_APPWIDGET_OPTIONS));
      }
    }
    
    return super.onStartCommand(intent, flags, startId);
  }
  
  @Override
  public IBinder onBind(Intent intent)
  {
    return null;
  }
  
  
  protected static abstract class AppWidgetProvider extends android.appwidget.AppWidgetProvider
  {
    public abstract Class<?> getAppWidgetService();
    
    protected Intent createIntent(Context context)
    {
      return new Intent(context, getAppWidgetService());
    }
    
    @Override
    public void onEnabled(Context context)
    {
      context.startService(createIntent(context));
    }
    
    @Override
    public void onDisabled(Context context)
    {
      context.stopService(createIntent(context));
    }
    
    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds)
    {
      context.startService(createIntent(context)
        .putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds)
        .setAction(ACTION_UPDATE));
    }
    
    @Override
    public void onDeleted(Context context, int[] appWidgetIds)
    {
      context.startService(createIntent(context)
        .putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds)
        .setAction(ACTION_DELETED));
    }
    
    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
    @Override
    public void onAppWidgetOptionsChanged(Context context, AppWidgetManager appWidgetManager, int appWidgetId, Bundle newOptions)
    {
      context.startService(createIntent(context)
        .putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId)
        .putExtra(AppWidgetManager.EXTRA_APPWIDGET_OPTIONS, newOptions)
        .setAction(ACTION_OPTIONS_CHANGED));
    }
  }
}

Java Source Code List

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