强制Android小部件更新

小部件实际上无法响应点击,因为它不是单独的进程运行.但是它可以启动服务来处理你的命令：

public class TestWidget extends appwidgetprovider {
  public void onupdate(Context context,AppWidgetManager appWidgetManager,int[] appWidgetIds) {
        final int n = appWidgetIds.length;

        // Perform this loop procedure for each App Widget that belongs to this provider
        for (int i=0; i<N; i++) {
            int appWidgetId = appWidgetIds[i];

            // Create an Intent to launch updateservice
            Intent intent = new Intent(context,updateservice.class);
            PendingIntent pendingIntent = PendingIntent.getservice(context,intent,0);

            // Get the layout for the App Widget and attach an on-click listener to the button
            RemoteViews views = new RemoteViews(context.getPackagename(),R.layout.appwidget_provider_layout);
            views.setOnClickPendingIntent(R.id.button,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 int onStartCommand(Intent intent,int flags,int startId) {
          //process your click here
          return START_NOT_STICKY;
        }
    }
}

您还应该在清单文件中注册新服务：

<service android:name="com.xxx.yyy.TestWidget$updateservice">

您可以在SDK中的维基词典示例中找到updateservice实现的另一个示例

而这里还有另一个好办法Clickable widgets in android