How can i Use External Storage in android

Question

This is for the first time i am using external storage in android. I need some help how can i perform different operations such as how to check whether External Storage is a

Answer 1

how to check whether External Storage is available or not?

Use Environment.getExternalStorageState().

How to write files or pictures into storage

Use standard Java I/O, working off a directory built using Environment.getExternalStorageDirectory().