i want to open binary file coming from database in IOS device i have used file viewer plugin for android and it is working fine for me
It's probably unlikely you are still looking for an answer but stumbled across this thread when facing this problem ourselves. So for whoever is having this problem and also lands here:
In the end we fixed this by making sure to first create a directory
On the SaveFile Path make sure to use the same name as you used to create your directory.