MY IPHONE IS SAYING CORRUPTED FILES

IM NOT SURE WHAT IS GOING ON WITH MY PHONE IT KEEPS GLITCHING & GOING INTO A BLACK LOADING SCREEN MODE … MOST OF MY APPS ARE THERE BUT CANT PHYSICALLY SEE THEM ! I OPENED ONE OF MY APPS A MESSAGE POPPED UP SAYING SOMETHING LIKE THIS IPHONE HAVE BEEN CORRUPTED !!! PLEASE HELP ME