android---获取设备相关信息

public class DevManager
{
    private static final String TAG = "CpuManager";
    Context mContext;

    public DevManager()
    {

    }

    public DevManager(Context context)
    {
        mContext = context;
    }

    // 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;
    }

    // 内存
    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
    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;
    }

    // sd卡大小
    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;
    }

    // 电池容量
    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));

    // 系统版本信息
    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);
        return h + " " + "时" + m + " " + "分";
    }
}