How to create file directories and folders in Android data/data/project filesystem -

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i working on video editor program , new android , java. happen when user presses "create new project" button, dialog pops asking user name of project. have part down, want, when user presses "ok" on dialog, code take name , create directory inside of data/data file project , inside of directory create folders titled 1 5 or more. don't know how go this, input appreciated.

as sgarman proposed can use sd card (and think it's better) if want use application dir can calling getfilesdir() activity, return file object of /data/data/your.app/files can path , append new directory:

string dirpath = getfilesdir().getabsolutepath() + file.separator + "newfoldername"; file projdir = new file(dirpath); if (!projdir.exists())     projdir.mkdirs(); ...

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