package com.ectrip.cyt.utils;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.List;

import android.app.ActivityManager;
import android.app.ActivityManager.MemoryInfo;
import android.content.Context;
import android.os.Build;
import android.util.Log;

public class CommetryUtils {

    public static void releaseCommery(Context context) throws Exception{
        ActivityManager activityManger = (ActivityManager) context
                .getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningAppProcessInfo> list = activityManger
                .getRunningAppProcesses();
        if (list != null)
            for (int i = 0; i < list.size(); i++) {
                ActivityManager.RunningAppProcessInfo apinfo = list.get(i);

                System.out.println("pid            " + apinfo.pid);
                System.out.println("processName              "
                        + apinfo.processName);
                System.out
                        .println("importance            " + apinfo.importance);
                String[] pkgList = apinfo.pkgList;

                if (apinfo.importance > ActivityManager.RunningAppProcessInfo.IMPORTANCE_SERVICE) {
                    // Process.killProcess(apinfo.pid);
                    for (int j = 0; j < pkgList.length; j++) {
                        // 2.2以上是过时的,请用killBackgroundProcesses代替
                        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.GINGERBREAD) { // TODO:如果当前版本小于HONEYCOMB版本，即3.0版本
                            activityManger.restartPackage(pkgList[j]);
                        } else {
                            activityManger.killBackgroundProcesses(pkgList[j]);
                        }
                    }

                }
            }
    }


    private long getAvailMemory(Context context)
    {
        // 获取android当前可用内存大小
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        MemoryInfo mi = new MemoryInfo();
        am.getMemoryInfo(mi);
        //mi.availMem; 当前系统的可用内存

        //return Formatter.formatFileSize(context, mi.availMem);// 将获取的内存大小规格化
        return mi.availMem/(1024*1024);
    }

    private long getTotalMemory(Context context)
    {
        String str1 = "/proc/meminfo";// 系统内存信息文件
        String str2;
        String[] arrayOfString;
        long initial_memory = 0;

        try
        {
            FileReader localFileReader = new FileReader(str1);
            BufferedReader localBufferedReader = new BufferedReader(
                    localFileReader, 8192);
            str2 = localBufferedReader.readLine();// 读取meminfo第一行，系统总内存大小

            arrayOfString = str2.split("\\s+");
            for (String num : arrayOfString) {
                Log.i(str2, num + "\t");
            }

            initial_memory = Integer.valueOf(arrayOfString[1]).intValue() * 1024;// 获得系统总内存，单位是KB，乘以1024转换为Byte
            localBufferedReader.close();

        } catch (IOException e) {
        }
        //return Formatter.formatFileSize(context, initial_memory);// Byte转换为KB或者MB，内存大小规格化
        return initial_memory/(1024*1024);
    }

}