AppDelegate文件中跳转页面

目前知道有两种方式，自己小结一下：

方式一：

    UINavigationController *presentNav = [[UINavigationController alloc] initWithRootViewController:vcReply];
    [self.window.rootViewController presentViewController:presentNav animated:YES completion:^{
        
    }];

方式二：

    if ([self.window.rootViewController isKindOfClass:[UINavigationController class]]) {
        UINavigationController *nacvAD = (UINavigationController *)self.window.rootViewController;
        [nacvAD pushViewController:vcReply animated:YES];
    }