whose view is not in the window hierarchy 阅读更多 关于 whose view is not in the window hierarchy whose view is not in the window hierarchy 这样的提示往往是 层次结构 乱了，程序无法跳转 1、在 - (void)viewDidLoad 中跳转回出现上述情况 来源： oschina 链接： https://my.oschina.net/u/1451688/blog/702615
