Reading file from assets

[beginnerProgrammer]

I am very new to android programming but I want to read a json file using async task, which seemed to work properly when I used a json file that was on a website (using http connection), but now I would like to do the same thing with my own json file. I have an assets folder called 'assets' where I've put my jsonFile.json.

I tried to open it using getAssets().open(), but that doesn't seem to work. Also my listFragment class (from which the loadJson is called, does not contain a context, so I can't parse the context from listFragment onto loadJson.

Is there anyone who knows how to help?

Thanks