funcgettopvc()->UIViewController?{
vartopvc =self.window?.rootViewController
while((topvc?.presentedViewController) !=nil){
topvc = topvc?.presentedViewController
}
returntopvc
}
funcgettopvc()->UIViewController?{
vartopvc =self.window?.rootViewController
while((topvc?.presentedViewController) !=nil){
topvc = topvc?.presentedViewController
}
returntopvc
}
本文标题：获取顶部viewcontroller
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