Android获取系统cpu信息,内存,版本,电量等信息
本文转自:http://www.cnblogs.com/brainy/archive/2012/05/30/2526752.html
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:
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; } //CPU个数 public static 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; } } }
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); }
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