The back button is too cumbersome

[PengOliverSu]

First of all, I want to thank the author, because the View is convenient.
Issue as follows:
If I find file I need after looking for multi-level directory, I need to return to my application immediately rather than pressing the back button once every level,when I use the FileBrowser.
It will waste a lot of time.
I think you can add a new button which can return to the application or destory the FileBrowserActivity immediately.