Youku and other player software also need to use speakers. That is to say, your mobile phone only has one speaker. If you play songs and TV series at the same time, the sounds will be mixed together and you will not be able to hear clearly, so in order to avoid this In this case, the software that requires audio will close other software at the same time. The background of the Apple iOS system IOS7 system is more intelligent. There are a variety of background management solutions to adapt to various APPs, and the background management mechanism is more stringent, with the purpose of achieving more Save system resources, improve fluency and minimize the experience gap with all real backgrounds. To put it simply, IOS will close other programs after a period of time. If qq music does not play songs, it will be closed after a period of time