String Buffer无法使用toString在String中转换整个数据

Question

错误：

  

String Buffer无法使用toString

转换String中的整个数据

BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String line = "";
StringBuffer  buffer =new StringBuffer();
while ((line = bufferedReader.readLine()) != null) {
    buffer.append(line +"\n");
    Log.d(LOG_TAG, "line:" + line);
}
/* Close Stream */
if (null != inputStream) {
    inputStream.close();
}
Log.d(LOG_TAG, "buffer.toString():" + buffer.toString());