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Android获取系统cpu信息,内存,版本,电量等信息

1、CPU频率,CPU信息:/proc/cpuinfo和/proc/stat
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");
      

补充:移动开发 , Android ,
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