获得android手机的CPU核心数

//CPU个数

private int getNumCores() {    //Private Class to display only CPU devices in the directory listing    class CpuFilter implements FileFilter {        @Override        public boolean accept(File pathname) {            //Check if filename is "cpu", followed by a single digit number            if(Pattern.matches("cpu[0-9]", pathname.getName())) {                return true;            }            return false;        }          }    try {        //Get directory containing CPU info        File dir = new File("/sys/devices/system/cpu/");        //Filter to only list the devices we care about        File[] files = dir.listFiles(new CpuFilter());        Log.d(TAG, "CPU Count: "+files.length);        //Return the number of cores (virtual CPU devices)        return files.length;    } catch(Exception e) {        //Print exception        Log.d(TAG, "CPU Count: Failed.");        e.printStackTrace();        //Default to return 1 core        return 1;    }}

不需要root权限。

/sys/devices/system/cpu/cpu0 ----------Cpu1

/sys/devices/system/cpu/cpu1 ----------Cpu2

获取CPU最大频率：

     // "/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 long getCpuFrequence() {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();BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));String line = reader.readLine();return StringUtils.parseLongSafe(line, 10, 0);} catch (IOException ex) {ex.printStackTrace();}return 0;}

// 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;        }

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) {          }      } 

Rom大小 www.2cto.com：

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;      } 

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;      } 

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;  } 

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);  } 

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private static void updateCpuStat() {ProcessBuilder cmd;long oldMypidStat = first ? 0 : mypidStat;long oldTotal = first ? 0 : total;try {StringBuilder builder = new StringBuilder();int pid = android.os.Process.myPid();String[] args = { "/system/bin/cat", "/proc/" + pid + "/stat" };cmd = new ProcessBuilder(args);Process process = cmd.start();InputStream in = process.getInputStream();byte[] re = new byte[1024];int len;while ((len = in.read(re)) != -1) {builder.append(new String(re, 0, len));}// Log.i(TAG, builder.toString());in.close();String[] stats = builder.toString().split(" +", -1);if (stats.length >= 17) {long utime = StringUtils.parseLongSafe(stats[13], 10);long stime = StringUtils.parseLongSafe(stats[14], 10);long cutime = StringUtils.parseLongSafe(stats[15], 10);long cstime = StringUtils.parseLongSafe(stats[16], 10);// Log.i(TAG, String.format(// "utime:%d, stime:%d, cutime:%d, cstime:%d", utime,// stime, cutime, cstime));mypidStat = utime + stime + cutime + cstime;}} catch (IOException ex) {ex.printStackTrace();}try {String[] args = { "/system/bin/cat", "/proc/stat" };cmd = new ProcessBuilder(args);Process process = cmd.start();BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));String line = null;while ((line = reader.readLine()) != null) {Matcher matcher = pattern.matcher(line);if (matcher.matches()) {String[] stats = line.split(" +", -1);long tmpTotal = 0;for (int i = 1; i < stats.length; i++) {tmpTotal += StringUtils.parseLongSafe(stats[i], 10);}total = tmpTotal;}break;}if (first) {first = false;} else {Log.i(TAG, String.format("vsir cpu usage: %2.1f%%",(double) (mypidStat - oldMypidStat)/ (total - oldTotal) * 100));}reader.close();} catch (IOException ex) {ex.printStackTrace();}}