public File getFrameworkApk(int id, String frameTag) throws AndrolibException {
    File dir = getFrameworkDir();
    File apk;

    if (frameTag != null) {
      apk = new File(dir, String.valueOf(id) + '-' + frameTag + ".apk");
      if (apk.exists()) {
        return apk;
      }
    }

    apk = new File(dir, String.valueOf(id) + ".apk");
    if (apk.exists()) {
      return apk;
    }

    if (id == 1) {
      InputStream in = null;
      OutputStream out = null;
      try {
        in = AndrolibResources.class.getResourceAsStream("/brut/androlib/android-framework.jar");
        out = new FileOutputStream(apk);
        IOUtils.copy(in, out);
        return apk;
      } catch (IOException ex) {
        throw new AndrolibException(ex);
      } finally {
        if (in != null) {
          try {
            in.close();
          } catch (IOException ex) {
          }
        }
        if (out != null) {
          try {
            out.close();
          } catch (IOException ex) {
          }
        }
      }
    }

    throw new CantFindFrameworkResException(id);
  }
 private File getFrameworkDir() throws AndrolibException {
   File dir =
       new File(
           System.getProperty("user.home")
               + File.separatorChar
               + "apktool"
               + File.separatorChar
               + "framework");
   if (!dir.exists()) {
     if (!dir.mkdirs()) {
       throw new AndrolibException("Can't create directory: " + dir);
     }
   }
   return dir;
 }
  public boolean detectWhetherAppIsFramework(File appDir) throws AndrolibException {
    File publicXml = new File(appDir, "res/values/public.xml");
    if (!publicXml.exists()) {
      return false;
    }

    Iterator<String> it;
    try {
      it = IOUtils.lineIterator(new FileReader(new File(appDir, "res/values/public.xml")));
    } catch (FileNotFoundException ex) {
      throw new AndrolibException("Could not detect whether app is framework one", ex);
    }
    it.next();
    it.next();
    return it.next().contains("0x01");
  }