CPU信息读取

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Question：读取/proc, /sys/的相关信息，普通APP应该是无法完成的吧？可能需要platform签名
文章参照自：http://www.2cto.com/kf/201206/134236.html
在Android中，我们可以通过读取一些系统文件来获得手机的cpu信息(CPU名字和CPU主频)。
具体请参照实例1.
实例1

package edu.cdut.robin;import java.io.BufferedReader;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.IOException;public class CPUTool{    private final static String kCpuInfoMaxFreqFilePath = "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq";    public static int getMaxCpuFreq()    {        int result = 0;        FileReader fr = null;        BufferedReader br = null;        try        {            fr = new FileReader(kCpuInfoMaxFreqFilePath);            br = new BufferedReader(fr);            String text = br.readLine();            result = Integer.parseInt(text.trim());        } catch (FileNotFoundException e)        {            e.printStackTrace();        } catch (IOException e)        {            e.printStackTrace();        } finally        {            if (fr != null)                try                {                    fr.close();                } catch (IOException e)                {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            if (br != null)                try                {                    br.close();                } catch (IOException e)                {                    // TODO Auto-generated catch block                    e.printStackTrace();                }        }        return result;    }    private final static String kCpuInfoMinFreqFilePath = "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq";    /* 获取CPU最小频率（单位KHZ） */    public static int getMinCpuFreq()    {        int result = 0;        FileReader fr = null;        BufferedReader br = null;        try        {            fr = new FileReader(kCpuInfoMinFreqFilePath);            br = new BufferedReader(fr);            String text = br.readLine();            result = Integer.parseInt(text.trim());        } catch (FileNotFoundException e)        {            e.printStackTrace();        } catch (IOException e)        {            e.printStackTrace();        } finally        {            if (fr != null)                try                {                    fr.close();                } catch (IOException e)                {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            if (br != null)                try                {                    br.close();                } catch (IOException e)                {                    // TODO Auto-generated catch block                    e.printStackTrace();                }        }        return result;    }    private final static String kCpuInfoCurFreqFilePath = "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq";    /* 实时获取CPU当前频率（单位KHZ） */    public static int getCurCpuFreq()    {        int result = 0;        FileReader fr = null;        BufferedReader br = null;        try        {            fr = new FileReader(kCpuInfoCurFreqFilePath);            br = new BufferedReader(fr);            String text = br.readLine();            result = Integer.parseInt(text.trim());        } catch (FileNotFoundException e)        {            e.printStackTrace();        } catch (IOException e)        {            e.printStackTrace();        } finally        {            if (fr != null)                try                {                    fr.close();                } catch (IOException e)                {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            if (br != null)                try                {                    br.close();                } catch (IOException e)                {                    // TODO Auto-generated catch block                    e.printStackTrace();                }        }        return result;    }    /* 获取CPU名字 */    public static String getCpuName()    {        FileReader fr = null;        BufferedReader br = null;        try        {            fr = new FileReader("/proc/cpuinfo");            br = new BufferedReader(fr);            String text = br.readLine();            String[] array = text.split(":\\s+", 2);            for (int i = 0; i < array.length; i++)            {            }            return array[1];        } catch (FileNotFoundException e)        {            e.printStackTrace();        } catch (IOException e)        {            e.printStackTrace();        } finally        {            if (fr != null)                try                {                    fr.close();                } catch (IOException e)                {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            if (br != null)                try                {                    br.close();                } catch (IOException e)                {                    // TODO Auto-generated catch block                    e.printStackTrace();                }        }        return null;    }}
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