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我已经使用故事板生成了一个新的选项卡式应用程序。从UITabBarController提供模态视图
到目前为止,我有
TabBarController - > FirstViewController - > SecondViewController - > ModalViewController
我试图显示tabBarController之前打开模式的看法。我加的AppDelegate.m下面的代码
showModalView
被称为从application:didFinishLaunchingWithOptions:;
- (void)showModalView
{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
GSLoginViewController *loginView = [storyboard instantiateViewControllerWithIdentifier:@"loginView"];
[loginView setModalPresentationStyle:UIModalPresentationFullScreen];
[self.window.rootViewController presentViewController:loginView animated:YES completion:NULL];
}
这里的输出我:
Warning: Attempt to present <ModalViewController: 0x93670d0> on
<UITabBarController: 0x935d170> whose view is not in the window hierarchy!
你可以在[这里] [1]找到答案。 [1]:http://stackoverflow.com/questions/11862883/whose-view-is-not-in-the-window-hierarchy –