How do you write to a folder on an SD card in Android?

Question

I am using the following code to download a file from my server then write it to the root directory of the SD card, it all works fine:

package com.downloader;         


        

Answer 1

File sdCard = Environment.getExternalStorageDirectory();
File dir = new File (sdCard.getAbsolutePath() + "/dir1/dir2");
dir.mkdirs();
File file = new File(dir, "filename");

FileOutputStream f = new FileOutputStream(file);
...