Android获取系统储存以及内存信息的方法（二）

 private static final String FILENAME_PROC_MEMINFO = "/proc/meminfo"; public static String getTotalMemorySize() {    try {      FileReader fr = new FileReader(FILENAME_PROC_MEMINFO);      BufferedReader br = new BufferedReader(fr, 2048);//      String memoryLine = br.readLine();      String subMemoryLine = "";      String Line = "";      while ((Line = br.readLine()) != null)      {        if (Line.contains("MemTotal:")){          subMemoryLine = Line.substring(Line.indexOf("MemTotal:"));          break;        }      }      br.close();      Matcher mer = Pattern.compile("^[0-9]+$").matcher(subMemoryLine.replaceAll("\\D+", ""));      //如果为正整数就说明数据正确的，确保在Double.parseDouble中不会异常      if (mer.find()) {        long memSize = Integer.parseInt(subMemoryLine.replaceAll("\\D+", "")) ;        double mem = (Double.parseDouble(memSize + "")/1024)/1024;        NumberFormat nf = new DecimalFormat( "0.0 ");        mem = Double.parseDouble(nf.format(mem));        //Log.e(LOG_TAG,"=========mem================ " + mem);        return String.valueOf(mem);      }    } catch (IOException e) {      e.printStackTrace();    }    return "Unavailable";  }    public static String getFreeMemorySize() {    try {      FileReader fr = new FileReader(FILENAME_PROC_MEMINFO);      BufferedReader br = new BufferedReader(fr, 2048);//      String memoryLine = br.readLine();      String subMemoryLine = "";      String Line = "";      while ((Line = br.readLine()) != null)      {        if (Line.contains("MemFree:")){          subMemoryLine = Line.substring(Line.indexOf("MemFree:"));          break;        }      }      br.close();      Matcher mer = Pattern.compile("^[0-9]+$").matcher(subMemoryLine.replaceAll("\\D+", ""));      //如果为正整数就说明数据正确的，确保在Double.parseDouble中不会异常      if (mer.find()) {        long memSize = Integer.parseInt(subMemoryLine.replaceAll("\\D+", "")) ;        double mem = (Double.parseDouble(memSize + "")/1024)/1024;        NumberFormat nf = new DecimalFormat( "0.0 ");        mem = Double.parseDouble(nf.format(mem));        //Log.e(LOG_TAG,"=========mem================ " + mem);        return String.valueOf(mem);      }    } catch (IOException e) {      e.printStackTrace();    }    return "Unavailable";  }