安全卫士-----进程的清理

业务类：ProcessManagerEngine

导入包:

package com.bw.antiVirusApp.engine;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import com.bw.antiVirusApp.bean.ProcessBean;

import android.R.integer;
import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.MemoryInfo;
import android.app.ActivityManager.RunningAppProcessInfo;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;

管理进程的类

/*
 * 进程的管理
 */
public abstract class ProcessManagerEngine 
{
  /*
    * 获取总内存的大小
    */
    public static long getTotalMemSize(Context context)
    {  
　　　　return null;
    }
    
 /*
 * 获取可用内存大小
 */
   public static long getAvailMemSize(Context context)
   {
　　　　return null;
   }
    /*
      * 返回系统所有运行中进程数据
    */
    public static List<ProcessBean>  getAllRuningProcessInfos(Context context) 
　　{
　　　　return null;
　　}
}

 

获取总内存的大小

 

public static long getTotalMemSize(Context context)
    {
        long size=0;
        //方法一：api版本必须在16以上
        //Activity管理器，获取运行着的activity的相关信息
        /*ActivityManager am=(ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        MemoryInfo outInfo=new MemoryInfo();
        //获取内存信息必须在16以上
        am.getMemoryInfo(outInfo);//outInfo：存放了内存的信息
        size=outInfo.totalMem;//totalMem所有的内存*/
        
        //方法二：
        File file=new File("/proc/meminfo");
        try {
            BufferedReader reader=new BufferedReader(new InputStreamReader(new FileInputStream(file)));
            String totalMeminfo=reader.readLine();
            int startIndex=totalMeminfo.indexOf(':');
            int endIndex=totalMeminfo.indexOf('k');
            totalMeminfo=totalMeminfo.substring(startIndex+1, endIndex).trim();
            //将字符型转化成long，再转化成字节
            size=Long.parseLong(totalMeminfo)*1024;
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return size;
    }

 

 

获取可用内存大小

public static long getAvailMemSize(Context context)
    {
        long size=0;
        ActivityManager am=(ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        MemoryInfo outInfo=new MemoryInfo();
        //获取内存大小必须在16aip以上,可用内存，没有级别限制
        am.getMemoryInfo(outInfo);//outInfo：存放了内存的信息
        size=outInfo.availMem;
        return size;
    }

 

返回系统所有运行中进程数据

 

public static List<ProcessBean>  getAllRuningProcessInfos(Context context) 
    {
        List<ProcessBean> list=new ArrayList<ProcessBean>();
        ActivityManager am=(ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        //获取运行中的进程
         List<RunningAppProcessInfo> runningAppProcesses = am.getRunningAppProcesses();
         for (RunningAppProcessInfo runningAppProcessInfo : runningAppProcesses) 
         {
            ProcessBean bean=new ProcessBean();
            
            //apk的包名
            String packName=runningAppProcessInfo.processName;
            bean.setPackName(packName);
            
            //获取图标和名字
            //1.获取包管理器
            PackageManager pm=context.getPackageManager();
            PackageInfo packageInfo = null;
            try
            {
                //2.通过包名找到ApplicationInfo
                packageInfo= pm.getPackageInfo(packName, 0);
            } catch (NameNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            ApplicationInfo applicationInfo = packageInfo.applicationInfo;
            //3.通过ApplicationInfo的信息找到图标。。。
            bean.setIcon(applicationInfo.loadIcon(pm));
            bean.setName(applicationInfo.loadLabel(pm)+"");
            int flags = applicationInfo.flags;//该程序拥有的所有属性
            //是否是系统自带apk
            if ((flags & applicationInfo.FLAG_SYSTEM)!=0) {
                //系统自带APP
                bean.setSystem(true);            
            }else {
                bean.setSystem(false);
            }    
            
            //获取占用内存大小,获取占用内存的信息
            //pids：进程的id编号。参数是int[],返回值是MemoryInfo[]
            int pid=runningAppProcessInfo.pid;
            android.os.Debug.MemoryInfo[] memoryInfos=
                    am.getProcessMemoryInfo(new int[]{pid});
            
            long totalPrivateDirty=memoryInfos[0].getTotalPrivateDirty()*1024;
            bean.setMemSize(totalPrivateDirty);
            
            list.add(bean);
        }
        return list;
    }