Android獲取系統(tǒng)cpu信息，內(nèi)存，版本，電量等信息 1、CPU頻率，CPU信息：/proc/cpuinfo和/proc/stat
通過(guò)讀取文件/proc/cpuinfo系統(tǒng)CPU的類(lèi)型等多種信息。
讀取/proc/stat 所有CPU活動(dòng)的信息來(lái)計(jì)算CPU使用率

下面我們就來(lái)講講如何通過(guò)代碼來(lái)獲取CPU頻率：

復(fù)制代碼代碼如下:

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 {
        // 獲取CPU最大頻率（單位KHZ）
     // "/system/bin/cat" 命令行
     // "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" 存儲(chǔ)最大頻率的文件的路徑
        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();
        }
         // 獲取CPU最小頻率（單位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();
        }
         // 實(shí)時(shí)獲取CPU當(dāng)前頻率（單位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;
        }
        // 獲取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、內(nèi)存：/proc/meminfo

復(fù)制代碼代碼如下:

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

復(fù)制代碼代碼如下:

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

復(fù)制代碼代碼如下:

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

5、電池電量

復(fù)制代碼代碼如下:

private BroadcastReceiver batteryReceiver=new BroadcastReceiver(){   

        @Override  
        public void onReceive(Context context, Intent intent) {   
            int level = intent.getIntExtra("level", 0);   
            //  level加%就是當(dāng)前電量了   
    }   
    };   
registerReceiver(batteryReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED)); 

6、系統(tǒng)的版本信息

復(fù)制代碼代碼如下:

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地址和開(kāi)機(jī)時(shí)間

復(fù)制代碼代碼如下:

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);   
}  