DemoWidget.java

import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
import android.widget.RemoteViews;

import com.greenlionsoft.cercaniaslib.R;
import com.greenlionsoft.sharedlib.logs.Logx;

import java.util.Arrays;

public class CercaniasRealTimeWidget extends AppWidgetProvider {

    @Override
    public void onEnabled(Context context) {
        //Called when first isntance is created
        Logx.d("onEnabled");
    }

    @Override
    public void onDeleted(Context context, int[] appWidgetIds) {
        Logx.d("onDeleted " + Arrays.toString(appWidgetIds));
        //Called every time an instance is deleted
    }

    @Override
    public void onDisabled(Context context) {
        Logx.d("onDisabled");
        //Called when last existing instance is deleted
    }

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        Logx.d("onUpdate " + Arrays.toString(appWidgetIds));

        for (int i=0; i<appWidgetIds.length; i++) {

            int appWidgetId = appWidgetIds[i];

            Intent intent = new Intent(context, CercaniasRealTimeWidgetIntentService.class);
            PendingIntent pi = PendingIntent.getBroadcast(context, appWidgetId, intent, PendingIntent.FLAG_UPDATE_CURRENT);

            RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_cercanias_real_time);
            views.setOnClickPendingIntent(R.id.bt_widget, pi);

            appWidgetManager.updateAppWidget(appWidgetId, views);
        }
    }

}