I have both ACV and jj comic viewer. Have downloaded a comic in rar format. How do I open it.? I have tried doing a long tap and then opening it as a image, audio, video and text but, nothing happens.
a file source that has been named .rar or sets of files that have been archived
into a .rar file can be a tricky thing. depending on where your file originated you can either get something that can view archived files like .cbz, .cbr and .rar.
i have not tried any of the android comic viewers but my comic viewer on my pc will automatically view any set of images that are archived regardless of the file extension. this could be likely due to the notion that .zip and .rar files can naturally be handled by the archive drivers that are pre-installed, but i digress.
if ACV and jj can not access the file natively; your options are to convert your .rar files into something that both apps can use/open, or try to rename the extensions of your files to whatever ACV/jj handle.
the ACV info page says that i can handle cbr/rar but as a beta function.
such is the case it is likely that the .rar. file has been archived in a way that can not currently be parsed/handled by your comic view apps.
tl;dr
rename the file until it works, try a different app or get a different comic source.