android.content.res.Resources $ NotFoundException：字符串资源ID Main中的致命异常

I've been trying to make a simple program that fetches a small random number and displays it to the user in a textview. After finally getting the random number to generate (I think) the program throws a fatal exception whenever I run. No errors in code, but I'm a complete newbie and I am starting simple so that I may learn. After hours I've submitted to asking for help. I'm almost certain that my snippet for random numbers is in the wrong area, I just am not sure where to put it. Everywhere I tried throws the same error.I've been trying to make a simple program that