How to read file from usb disk in Android?

Question

I read the Android documentation for USB support at http://developer.android.com/guide/topics/connectivity/usb/host.html and found out that

Android supports USB host mode, we can read any file from a USB device.

In my case, I have a pdf file that is stored in the handle of a USB drive. I want to attach a pen drive to my Android device and want to read pdf data using my phone. Please help me solve this demo project or tutorial link to cover this topic. Thanks

Answer 1

String extStorageDirectory = context.getExternalCacheDir().getAbsolutePath(); 

here it gets the path like: /mnt/sdcard/Android/data/com.example/cache

now add ur file name using this path. e.g. abc.txt

/mnt/sdcard/Android/data/com.iris.activity/cache/abc.txt

now use the File class and get an InputStream from this path and read the file from InputStream.