如何将选定的数据传回上一个视图控制器 [英] How to pass the selected data back to previous view controller

问题描述

我的功能问题是我不确定如何传递我选择的数据，并返回到以前的视图控制器.链接是整个段落，http://pastebin.com/AtMjLD66(抱歉我没有 10声誉，很抱歉给您带来不便)加油.

My issue for my function is I am not sure how to pass the data which i selected, and back to the previous view controller. The link is to the whole paragraph,http://pastebin.com/AtMjLD66 (sorry I don't have 10 reputations, sorry about the inconvenience ) Cheer.

推荐答案

我会为此推荐委托，但如果您不想这样做，NSNotification 可以节省您的时间.

I would recommend delegates for this but if you don't want to do so, NSNotification would save your day here.

在 advanceVC.m 中添加它，可能在 viewDidLoad

Add this is in advanceVC.m probably in viewDidLoad

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(someThingSelectedInDetail:) name:@"someThingSelectedInDetail" object:nil];

- (void)someThingSelectedInDetail:(NSNotification*)notificationObject
{
   NSString *chefName = notificationObject.object;
   NSLog(@"Chef Name from notification: %@",chefName);
}

并在 advanceDetailVC.m 的 didSelect 中执行此操作.

And in didSelect of advanceDetailVC.m do this.

UITableViewCell * cell = [tableView cellForRowAtIndexPath:indexPath];
[[NSNotificationCenter defaultCenter ]postNotificationName:@"someThingSelectedInDetail" object: cell.textLabel.text];

这里有索引路径，而不是传递标签的文本，因此直接从数组中获取它并像这样将其传递到通知中

Instead of passing a label's text you have the indexpath here so take it directly from the array and pass it in the notification like this

[[NSNotificationCenter defaultCenter ]postNotificationName:@"someThingSelectedInDetail" object: [detailArray objectAtIndex:indexPath.row]]; 

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