ViewController*Controller=[[ViewControlleralloc]init];

UINavigationController*nav=[[UINavigationControlleralloc]initWithRootViewController:Controller];

[selfpresentViewController:navanimated:YEScompletion:nil];




//未登录，跳转到登录页面 TLDLoginViewController *loginVC = [[TLDLoginViewController alloc]init]; TLDNavigationController *nv = [[TLDNavigationController alloc] initWithRootViewController:loginVC];//将普通视图添加到NavigationController [self presentViewController:nv animated:YES completion:^{ NSLog(@"模态视图"); }];//退出登录页面 [self dismissViewControllerAnimated:YES completion:nil];