将NSString从子级传递给ModalViewController的父级 [英] Pass a NSString from Child to Parent for ModalViewController

问题描述

我的父级ViewController类包含一个UISearchBar.我有一个UIButton，它将通过下面的代码推送到新的ViewController

My parent ViewController class contains a UISearchBar. I have a UIButton that will push on a new ViewController via the code below

AddViewController *addViewController = [[AddViewController alloc] initWithNibName:@"AddView" bundle:nil];
[self presentModalViewController:addViewController animated:YES];
[addViewController release];

在AddViewController中，向用户显示动物名称的TableView.在

In the AddViewController the User is presented with a TableView of animal names. On the

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

我提取动物名称并将其存储在NSString中.然后我用

I extract the the animal name and store it in an NSString. I then dismiss the AddViewController by

[self dismissModalViewControllerAnimated:YES];

我的问题是如何将NSString动物名传递给AddViewController的父级ViewController?我正在尝试将动物名称放置在UISearchBar中

My Question is How do I pass the NSString animal name to the Parent ViewController of AddViewController? I'm attempting to place the animal name in the UISearchBar

推荐答案

您需要创建一个委托.

http://iosdevelopertips.com/objective -c/the-basics-of-protocols-and-delegates.html

这些允许您与父视图控制器进行通信，并在您的情况下传递变量.

These allow you to communicate with the parent view controller, and in your case, pass a variable.

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