What characters allowed in file names on Android?

Question

What special characters are allowed for file names on Android?

~!@#$%^&*()_+/\., 

Also, can I save file with Unicode name?

Answer 1

According to wiki and assuming that you are using external data storage which has FAT32.

Allowable characters in directory entries

are

Any byte except for values 0-31, 127 (DEL) and: " * / : < > ? \ | + , . ; = [] (lowcase a-z are stored as A-Z). With VFAT LFN any Unicode except NUL

Answer 2

1. On Android (at least by default) the file names encoded as UTF-8.

2. Looks like reserved file name characters depend on filesystem mounted (http://en.wikipedia.org/wiki/Filename).

I considered as reserved:

private static final String ReservedChars = "|\\?*<\":>+[]/'";