Program error:

Unable to start service intent read a lot of online posts and said that the service was not registered, which is right. But there is also a very low-level error, that is, when you start intent, you mistakenly write startactivity() as startservie(). I would like to say that this is a very low-level mistake, but I made it today and spent a whole morning debugging it, AI ~ next time, have a long memory