Doesn't seem to be any answers for android users but if you Google corrupted world minecraft there are iOS fixes but not sure if it's for just old version or can be for updated versionschedule I would definitely look into it. As for me I'm still stuck I did more research into it today but still nothing. I finally found the data on my phone for it but the file is all numbers not what I named it and plus all I can do is open up the file and not fix anything that might have happened to it. Still waiting also on answers from the minecraft people through Facebook and I contacted them on the play store. Hope fully I can get this fixed.
As far as file name is can't find when I go to minecraft worlds on my folders they are titled numbers and not names I'm not entirely sure how to find it. I could try to delete all other worlds and only leave that one going through my minecraft pe app but I'm not sure if that will delete them out of my files to be able to find the name of the file. Let me know if there's a way to it
OK well for me this didn't work and I ended up accidentally deleting the world data it self but if this ever happens again I'll remember how to fix it... next time I'll be more careful when trying to delete one data file out... I also think it didn't work because of not have the new world as the same world set up asome the one I was trying to fix... I'll post on this thread if it happens again anytI me soon but hopefully I never have this problem again.. Thank you for helping me !!!