FileInputStream fis.read() gives exception

Question

I want to gain access to SD-CARD for this i am write some code :

File f=Environment.getExternalStorageDirectory().getAbsolutePath();

//   f=/mnt/sdcard 

byte[] bytearray=new byte[4];

FileInputStream fis=new FileInputStream(f);

fis.read(bytearray,1,1);   //This line gives exception

I can't figure out why this an exception

Answer 1

What you are trying to read is not actually a file, but a directory.

This is the reason why you are getting an exception.

For listing de directectory contents, you should use the list() method on the File object.