当我尝试这样做外部存储的拷贝一个文件到文件夹中的数据库，这个错误发生：

When I try do a copy one file of the external storage for into folder database, this error happens:

java.io.IOException异常：读取失败：EBADF（错误的文件数）

java.io.IOException: read failed: EBADF (Bad file number)

此错误上，而这种方法的线路发生

This error happens on the line of while of this method

private void copiarBaseDados(InputStream input) throws IOException{
  OutputStream output = new FileOutputStream(ConfiguracoesBaseDados.BANCO_PATH + ConfiguracoesBaseDados.BANCO_NOME);
  int tamanho;
  byte[] buffer = new byte[1024];
  while ((tamanho = input.read(buffer)) > 0) 
       output.write(buffer, 0, tamanho);
  output.flush();
  output.close();
  input.close();
}

任何想法可能是什么问题？谢谢

Any idea what could be the problem? Thanks

推荐答案

请阅读之前，你的输​​入（流）是否存在。

Check whether your input(stream) exists before reading.

也看到，如果你有这些PERMISSONS：

Also see if you have these permissons:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>