本文介绍了如何使用 NSNotification的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
在我的应用程序中有两个 viewController，分别是 FirstViewController 和 DetailViewController.当点击表格单元格时，它会导航到 DetailViewController.在 DetailViewController 中，我想编辑并重新加载 FirstViewController 的表格视图
In my application there is two viewControllers as FirstViewController and DetailViewController.When tap on a table cell, it navigate to DetailViewController. In DetailViewController, I want to edit and reload the FirstViewController's table view
如何使用 NSNotification 解决这个问题?
How can I use NSNotification for this problem?
这是我要实现的方法 NSNotification 东西
Here's the method I want to implement NSNotification stuff
-(IBAction) save{
strSelectedText=theTextField.text;
[NSNotificationCenter defaultCenter];
NSNotification* notification = [NSNotification notificationWithName:@"MyNotification" object:self];
[[NSNotificationCenter defaultCenter] postNotification:notification];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector (objFirstViewController) name:@"MyNotification" object:nil];
[self.navigationController popViewControllerAnimated:YES];
}
推荐答案
-(void)viewDidLoad {
[NSNotificationCenter defaultCenter];
NSNotification* notification = [NSNotification notificationWithName:@"MyNotification" object:self];
[[NSNotificationCenter defaultCenter] postNotification:notification];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector (objFirstViewController) name:@"MyNotification" object:nil];
}
-(IBAction) save{
[[NSNotificationCenter defaultCenter] postNotificationName:MyNotification object:sender];
//this will go to where you implement your selector objFirstViewController.
}
-(void)objFirstViewController:(NSNotification *)notification {
}
这篇关于如何使用 NSNotification的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！