Android: How to detect a directory in the assets folder?

Question

I\'m retrieving files like this

String[] files = assetFiles.list(\"EngagiaDroid\"); 

How can we know whether it is a file or is a director

Answer 1

The appalling truth is that despite being asked nearly 10 years ago, no simple, elegant, roundly applauded method of determining whether an element in the array returned by AssetManager.list() is a file or a directory has been offered by any answer to date.

So, for example, if an asset directory contains a thousand elements, then seemingly a thousand I/O operations are necessary to isolate the directories.

Nor, for any element, does any native method exist for obtaining its parent directory - vital for something complex like an assets Browser / Picker - where you could end up looking at some seriously ugly code.

boolean isAssetDirectory = !elementName.contains(".");

The lateral approach that worked for me was to assume that any element without a dot (.) in its name was a directory. If the assumption is later proved wrong it can be easily rectified.

Asset files generally exist because you put them there. Deploy naming conventions that distinguish between directories and files.