UIApplication sharedApplication 实例与 didFinishLaunchingWithOptions 中给出的相同吗？
UIApplication sharedApplication instance is same as given in didFinishLaunchingWithOptions?
didFinishLaunchingWithOptions 中给出的 UIApplication 实例是否与 [UIApplication sharedApplication]
相同
是的，它们是一样的，因为UIApplication是单例；消息 [UIApplication sharedApplication] returns 单例对象 didFinishLaunchingWithOptions.
didFinishLaunchingWithOptions 中给出的 UIApplication 实例是否与 [UIApplication sharedApplication]
相同是的，它们是一样的，因为UIApplication是单例；消息 [UIApplication sharedApplication] returns 单例对象 didFinishLaunchingWithOptions.