android 如何获取CPU频率(HZ…

原文地址：如何获取CPU频率(HZ)">android 如何获取CPU频率(HZ)作者：neigedachen

如何得知自己的手机CPU频率是多少呢？有的手机可以如同查看SD卡容量信息一样查看处理器信息

比如：android 2.3系统，设置 -> 关于手机 ->硬件信息，即可看到

但是也有很多手机并没有提供这样的UI展示，别着急，这里还有一个方法。

如下操作：

这里的550000就是我们要找的CPU频率，注意单位是KHZ.

通过读取文件/proc/cpuinfo系统CPU的类型等多种信息。

读取/proc/stat 所有CPU活动的信息来计算CPU使用率

 

下面我们就来讲讲如何通过代码来获取CPU频率：

package com.orange.cpu;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;

public class CpuManager {

       // 获取CPU最大频率（单位KHZ）

    // "/system/bin/cat"命令行

    // "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq"存储最大频率的文件的路径

       public static String getMaxCpuFreq() {
               String result = "";
               ProcessBuilder cmd;
               try {
                       String[] args = { "/system/bin/cat",
                                       "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq"};
                       cmd = new ProcessBuilder(args);
                       Process process = cmd.start();
                       InputStream in = process.getInputStream();
                       byte[] re = new byte[24];
                       while (in.read(re) != -1) {
                               result = result + new String(re);
                       }
                       in.close();
               } catch (IOException ex) {
                       ex.printStackTrace();
                       result = "N/A";
               }
               return result.trim();
       }

       //获取CPU最小频率（单位KHZ）
       public static String getMinCpuFreq() {
               String result = "";
               ProcessBuilder cmd;
               try {
                       String[] args = { "/system/bin/cat",
                                       "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq"};
                       cmd = new ProcessBuilder(args);
                       Process process = cmd.start();
                       InputStream in = process.getInputStream();
                       byte[] re = new byte[24];
                       while (in.read(re) != -1) {
                               result = result + new String(re);
                       }
                       in.close();
               } catch (IOException ex) {
                       ex.printStackTrace();
                       result = "N/A";
               }
               return result.trim();
       }

       //实时获取CPU当前频率（单位KHZ）
       public static String getCurCpuFreq() {
               String result = "N/A";
               try {
                       FileReader fr = new FileReader(
                                       "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
                       BufferedReader br = new BufferedReader(fr);
                       String text = br.readLine();
                       result = text.trim();
               } catch (FileNotFoundException e) {
                       e.printStackTrace();
               } catch (IOException e) {
                       e.printStackTrace();
               }
               return result;
       }

       //获取CPU名字
       public static String getCpuName() {
               try {
                       FileReader fr = newFileReader("/proc/cpuinfo");
                       BufferedReader 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();
               }
               return null;
       }
}

以上博文摘自百度空间

Android中如何获得系统相关的信息（比如CPU使用率，内存的总量和已用的量）

android 的cpu 硬盘 内存 网络设置 系统信息 硬件信息