Android - 活动中的主要方法导致程序崩溃到黑屏，但没有错误

Earlier I was having an issue where going to my main activity (ColorMatch.java) from my splash page activity caused the program to get indefinitely stuck on a black screen. I found this was due to the run() method called in my onCreate in my main activity. I've tried commenting out certain things to see if it works, but as long as run() is called in my onCreate it automatically goes to black screen, without even giving an error for me to troubleshoot with. What could be causing this issue? Earlier I was having an issue where going to my