FileOutputStream && FileInputStream

 

 

 

private void writeFile(String fileName, String info) {
  try {
   FileOutputStream fout = openFileOutput(fileName, MODE_PRIVATE);
   byte[] bytes = info.getBytes();
   fout.write(bytes);
   fout.close();
  } catch (Exception err) {

  }
 }







private String readFile(String fileName) {
  try {
   FileInputStream fin = openFileInput(fileName);
   int length = fin.available();// 获取文件长度
   byte[] bytes = new byte[length];
   fin.read(bytes);
   return EncodingUtils.getString(bytes, ENCODING);
  } catch (Exception err) {
   return "";
  }
 }