如何在iOS SDK中使用presentViewController在视图控制器之间传递变量？

Question

几天前我写了一个使用presentViewController加载视图控制器的方法:

-(void)passaGC:(NSString *)user
{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UIViewController *viewController = (UIViewController *)[storyboard instantiateViewControllerWithIdentifier:@"generaC"];
[self presentViewController:viewController animated:YES completion:nil];

}

但今天我需要将变量用户从此方法传递给加载的viewController.

如何修改我的方法来执行此操作？

我发现了堆栈溢出的其他问题,但没有什么与我的请求非常相似

Answer 1

将属性添加到目标viewController(在.h中):

@property (strong, nonatomic) NSString *user;

最后你的方法看起来像

-(void)passaGC:(NSString *)user
{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UIViewController *viewController = (UIViewController *)[storyboard instantiateViewControllerWithIdentifier:@"generaC"];

viewController.user = user;

[self presentViewController:viewController animated:YES completion:nil];

}