[android] getprop from Java

getprop.java

// ref: https://groups.google.com/forum/#!topic/android-developers/M-g3LqIY_xM

private String getProperty(String name, String defaultValue) {
  ArrayList<String> processList = new ArrayList<String>();
  String line;
  Pattern pattern = Pattern.compile("\\[(.+)\\]: \\[(.+)\\]");
  Matcher m;

  try {
      Process p = Runtime.getRuntime().exec("getprop");
      BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));
      while ((line = input.readLine()) != null) {
          processList.add(line);
          m = pattern.matcher(line);
          if (m.find()) {
              MatchResult result = m.toMatchResult();
              if(result.group(1).equals(name))
                  return result.group(2);
          }
      }
      input.close();
  } catch (Exception err) {
      err.printStackTrace();
  }

  return defaultValue;
}