PollingUtils.java

package com.app.tools;

import java.util.List;

import org.json.JSONArray;

import com.alibaba.fastjson.JSON;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonArrayRequest;
import com.android.volley.toolbox.Volley;
import com.app.function.ActivityUnit;
import com.app.function.Configuration;
import com.app.function.UserInfo;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.SystemClock;
import android.util.Log;

public class PollingUtils {
	// 开启轮询服务
	public static void startPollingService(Context context, int seconds,
			Class<?> cls, String action) {
		// 获取AlarmManager系统服务
		AlarmManager manager = (AlarmManager) context
				.getSystemService(Context.ALARM_SERVICE);

		// 包装需要执行Service的Intent
		Intent intent = new Intent(context, cls);
		intent.setAction(action);
		PendingIntent pendingIntent = PendingIntent.getService(context, 0,
				intent, PendingIntent.FLAG_UPDATE_CURRENT);

		// 触发服务的起始时间
		long triggerAtTime = SystemClock.elapsedRealtime();

		// 使用AlarmManger的setRepeating方法设置定期执行的时间间隔（seconds秒）和需要执行的Service
		manager.setRepeating(AlarmManager.ELAPSED_REALTIME, triggerAtTime,
				seconds * 1000, pendingIntent);
	}

	// 停止轮询服务
	public static void stopPollingService(Context context, Class<?> cls,
			String action) {
		AlarmManager manager = (AlarmManager) context
				.getSystemService(Context.ALARM_SERVICE);
		Intent intent = new Intent(context, cls);
		intent.setAction(action);
		PendingIntent pendingIntent = PendingIntent.getService(context, 0,
				intent, PendingIntent.FLAG_UPDATE_CURRENT);
		// 取消正在执行的服务
		manager.cancel(pendingIntent);
	}
}