对文件进行Base64 encode

 

 

  android.util.Base64OutputStream stream;
  File file = new File(Environment.getExternalStorageDirectory()
    .getPath()
    + "/GooglePinyinInstaller.exe");
  // 合并的文件
  File outFile = new File(Environment.getExternalStorageDirectory()
    .getPath()
    + "/GooglePinyinInstaller2.exe");

  // 缓冲
  byte[] buffer = new byte[1024 * 1024];

  try {
   // 输入流
   ByteArrayOutputStream out = new ByteArrayOutputStream();
   stream = new Base64OutputStream(out, android.util.Base64.CRLF
     | android.util.Base64.NO_CLOSE);

   // 输出流写进文件
   // RandomAccessFile outt = new RandomAccessFile(outFile, "rw");
   int off = 0;

   // 循环读取输入流 begin
   InputStream inn = new FileInputStream(file);
   
   while (inn.read(buffer) != -1) {
    Log.d(TAG, "****" + off++);

    // 写入流
    stream.write(buffer);
    //
    
    // 写入文件
    //outt.write(out.toByteArray());

    // 循环读取输入流 end
   }
   
   System.out.println(new String(out.toByteArray()));

   out.close();
   stream.close();
//   outt.close();

  } catch (FileNotFoundException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  }