Android获取系统cpu信息，内存，版本，电量相关信息

最新推荐文章于 2022-03-24 22:37:08 发布

转载最新推荐文章于 2022-03-24 22:37:08 发布 · 441 阅读

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本文介绍如何通过代码获取Android设备的CPU频率、内存、ROM大小、SD卡大小、电池电量、系统版本信息、MAC地址和开机时间等关键信息与状态。

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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");

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 = new FileReader("/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;

}

2、内存：/proc/meminfo

public void getTotalMemory() {  

        String str1 = "/proc/meminfo";  

        String str2="";  

        try {  

            FileReader fr = new FileReader(str1);  

            BufferedReader localBufferedReader = new BufferedReader(fr, 8192);  

            while ((str2 = localBufferedReader.readLine()) != null) {  

                Log.i(TAG, "---" + str2);  

            }  

        } catch (IOException e) {  

        }  

    }

3、Rom大小

public long[] getRomMemroy() {  

        long[] romInfo = new long[2];  

        //Total rom memory  

        romInfo[0] = getTotalInternalMemorySize();  

        //Available rom memory  

        File path = Environment.getDataDirectory();  

        StatFs stat = new StatFs(path.getPath());  

        long blockSize = stat.getBlockSize();  

        long availableBlocks = stat.getAvailableBlocks();  

        romInfo[1] = blockSize * availableBlocks;  

        getVersion();  

        return romInfo;  

    }  

    public long getTotalInternalMemorySize() {  

        File path = Environment.getDataDirectory();  

        StatFs stat = new StatFs(path.getPath());  

        long blockSize = stat.getBlockSize();  

        long totalBlocks = stat.getBlockCount();  

        return totalBlocks * blockSize;  

    }

4、sdCard大小

public long[] getSDCardMemory() {  

        long[] sdCardInfo=new long[2];  

        String state = Environment.getExternalStorageState();  

        if (Environment.MEDIA_MOUNTED.equals(state)) {  

            File sdcardDir = Environment.getExternalStorageDirectory();  

            StatFs sf = new StatFs(sdcardDir.getPath());  

            long bSize = sf.getBlockSize();  

            long bCount = sf.getBlockCount();  

            long availBlocks = sf.getAvailableBlocks();  

            sdCardInfo[0] = bSize * bCount;//总大小  

            sdCardInfo[1] = bSize * availBlocks;//可用大小  

        }  

        return sdCardInfo;  

    }

5、电池电量

private BroadcastReceiver
 batteryReceiver=new BroadcastReceiver(){ 

 

        @Override 

        public void onReceive(Context
 context, Intent intent) {  

            int level
 = intent.getIntExtra("level",
0); 

            // 
 level加%就是当前电量了  

    } 

    }; 

registerReceiver(batteryReceiver,
new IntentFilter(Intent.ACTION_BATTERY_CHANGED)); 

6、系统的版本信息

public String[] getVersion(){  

    String[] version={"null","null","null","null"};  

    String str1 = "/proc/version";  

    String str2;  

    String[] arrayOfString;  

    try {  

        FileReader localFileReader = new FileReader(str1);  

        BufferedReader localBufferedReader = new BufferedReader(  

                localFileReader, 8192);  

        str2 = localBufferedReader.readLine();  

        arrayOfString = str2.split("\\s+");  

        version[0]=arrayOfString[2];//KernelVersion  

        localBufferedReader.close();  

    } catch (IOException e) {  

    }  

    version[1] = Build.VERSION.RELEASE;// firmware version  

    version[2]=Build.MODEL;//model  

    version[3]=Build.DISPLAY;//system version  

    return version;  

}

7、mac地址和开机时间

public String[] getOtherInfo(){  

    String[] other={"null","null"};  

       WifiManager wifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);  

       WifiInfo wifiInfo = wifiManager.getConnectionInfo();  

       if(wifiInfo.getMacAddress()!=null){  

        other[0]=wifiInfo.getMacAddress();  

    } else {  

        other[0] = "Fail";  

    }  

    other[1] = getTimes();  

       return other;  

}  

private String getTimes() {  

    long ut = SystemClock.elapsedRealtime() / 1000;  

    if (ut == 0) {  

        ut = 1;  

    }  

    int m = (int) ((ut / 60) % 60);  

    int h = (int) ((ut / 3600));  

    return h + " " + mContext.getString(R.string.info_times_hour) + m + " "  

            + mContext.getString(R.string.info_times_minute);  

}