所谓的心跳查询

public class QueryManager {    private static Context context;    private static Intent intent;    private static boolean stopFlag;    private static Runnable runnableQueryService;    private static Handler queryHandler;

queryHandler .postDelayed(runnableQueryService, dylaySeconds*1000);//第一次调用延迟

queryHandler = new Handler(){    @Override    public void handleMessage(Message msg) {        super.handleMessage(msg);        String strJson = msg.getData().getString("data");        processServiceQueryData(strJson);        if(!stopFlag) {            queryHandler.postDelayed(runnableQueryService, 20 * 1000);        }    }};

QueryNewCountManager.runnableQueryService = new Runnable(){    @Override    public void run() {//调用服务进行一次查询        Intent intent = new Intent(context, QueryService.class);        if(queryHandler == null){            return;        }        QueryService.setHandler(queryHandler);        context.startService(intent);    }};

QueryNewCountManager.intent = new Intent(context, QueryFireCountService.class);

(handler)queryHandler --> (runnable)runnableQueryService --> (service)QueryService（带上queryHandler，查询完后，sendmessage 给 queryHandler)

queryHandler处理QueryService发来的service。然后重新调用runnableQueryService 。

如此反复进行心跳查询。