系统信息的工具类（内存状态、运行的程序数）
package com.flyou.utils;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.InputStreamReader;import java.util.List;import android.app.ActivityManager;import android.app.ActivityManager.MemoryInfo;import android.app.ActivityManager.RunningAppProcessInfo;import android.content.Context;/** * 系统信息的工具类 * */public class SystemInfoUtils {/** * 获取正在运行的进程的数量 * @param context 上下文 * @return */public static int getRunningProcessCount(Context context){//PackageManager //包管理器 相当于程序管理器。静态的内容。//ActivityManager 进程管理器。管理的手机的活动信息。动态的内容。ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);List<RunningAppProcessInfo> infos = am.getRunningAppProcesses();return infos.size();}/** * 获取手机可用的剩余内存 * @param context 上下文 * @return */public static long getAvailMem(Context context){ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);MemoryInfo outInfo = new MemoryInfo();am.getMemoryInfo(outInfo);return outInfo.availMem;} /** * 获取手机可用的总内存 * @param context 上下文 * @return long byte */public static long getTotalMem(Context context){//ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);//MemoryInfo outInfo = new MemoryInfo();//am.getMemoryInfo(outInfo);//return outInfo.totalMem;try {File file = new File("/proc/meminfo");FileInputStream fis = new FileInputStream(file);BufferedReader br = new BufferedReader(new InputStreamReader(fis));String line = br.readLine();//MemTotal:513000 kBStringBuilder sb = new StringBuilder();for(char c: line.toCharArray()){if(c>='0'&&c<='9'){sb.append(c);}}return Long.parseLong(sb.toString())*1024;} catch (Exception e) {e.printStackTrace();return 0;}}}
，可是我要如何在浅薄的纸上为你画上我所有的命轮？
