Developer Flying Wang has released a set of utility functions called FlyFilesUtils for handling files, strings, screen DPI, and dialogs for Delphi XE8 Firemonkey. The functions are specifically built to help with development on the Android and IOS platforms (but also Windows and OSX). The source code for these utility functions is available over on Sourceforge. There are four areas that the utility functions cover which are working with files, working with strings, working with dialogs, and working with the Firemonkey screen DPI. Here are the file utility functions