Android实现widget定时更新

在开发Android的widget时，第一个需要解决的问题就是怎么实现让widget定时更新，在查阅比较多的资料后，一般情况用Service在后台更新，废话不多说，贴代码如下：

Widget:

Java代码

public class NewsWidgetProvider extends AppWidgetProvider {

@Override

public void onDeleted(Context context, int[] appWidgetIds) {

}

@Override

public void onDisabled(Context context) {

// TODO Auto-generated method stub

super.onDisabled(context);

}

@Override

public void onEnabled(Context context) {

// TODO Auto-generated method stub

super.onEnabled(context);

}

@Override

public void onUpdate(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds) {

NewsService.updateAppWidgetIds(appWidgetIds);

context.startService(new Intent(context,NewsService.class));

}

public static RemoteViews updateAppWidget(Context context,List list) {

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

if (list.size() > 3) {

views.setTextViewText(R.id.textView01, list.get(0).title);

views.setTextViewText(R.id.textView02, list.get(1).title);

views.setTextViewText(R.id.textView03, list.get(2).title);

}

Intent detailIntent=new Intent(context,NewsSiteList.class);

PendingIntent pending=PendingIntent.getActivity(context, 0, detailIntent, 0);

views.setOnClickPendingIntent(R.id.textView01, pending);

views.setOnClickPendingIntent(R.id.textView02, pending);

views.setOnClickPendingIntent(R.id.textView03, pending);

return views;

}

@Override

public void onReceive(Context context, Intent intent) {

super.onReceive(context, intent);