I'm using iOS private api "MPAVRoutingController" to get avalilable airplay device list,like this:
MPAVRoutingController avCtrl = [[MPAVRoutingController alloc]init];
// get avalilable routes
NSArray *routes = avCtrl.availableRoutes;
But until I pop the iOS 7 "control center", the avalilable airplay device list doesn't update. How to invoke refresh action by code?