好吧,我设法解决了

public class WidgetProvider extends AppWidgetProvider {

@Override

public void onUpdate(Context context, AppWidgetManager appWidgetManager,

int[] appWidgetIds) {

Log.e("ERROR", "onUpdate method called");

final int N = appWidgetIds.length;

// Perform this loop procedure for each App Widget that belongs to this provider

for (int i=0; i

int appWidgetId = appWidgetIds[i];

// Create an Intent to launch ExampleActivity

Intent intent = new Intent(context, UpdateService.class);

PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);

Log("Pending Intent = " + pendingIntent.toString());

// Get the layout for the App Widget and attach an on-click listener to the button

RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_layout);

views.setOnClickPendingIntent(R.id.widge, pendingIntent);

// Tell the AppWidgetManager to perform an update on the current App Widget

appWidgetManager.updateAppWidget(appWidgetId, views);

}

}

public static class UpdateService extends Service {

@Override

public void onCreate() {

.........

.........

}

// Service stuff here

}

}

我不完全确定在onEnable中这样做有什么问题.也许有人可以阐明原因.