通知传值 notification
Posted 原码
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了通知传值 notification相关的知识，希望对你有一定的参考价值。
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.textF = [[UITextField alloc] initWithFrame:CGRectMake(100, 100, 100, 40)];
self.textF.borderStyle = 2;
self.textF.backgroundColor = [UIColor redColor];
[self.view addSubview:self.textF];
self.textF.delegate = self;
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(notification:) name:@"notification" object:nil];
}
-(void)notification:(NSNotification *)notification
{
self.textF.text = notification.userInfo[@"name"];
NSLog(@"你好");
}
-(void)dealloc
{
[[NSNotificationCenter defaultCenter]removeObserver:self];
}
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
if ([self.textF isFirstResponder]) {
[self.textF resignFirstResponder];
FirstViewController *firstC = [[FirstViewController alloc] init];
firstC.str = self.textF.text;
[self presentViewController:firstC animated:YES completion:^{
}];
}
}
@implementation FirstViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor redColor];
self.myText = [[UITextField alloc] initWithFrame:CGRectMake(100, 100, 100, 40)];
self.myText.borderStyle = 2;
self.myText.backgroundColor = [UIColor redColor];
[self.view addSubview:self.myText];
self.myText.delegate = self;
self.myText.text = self.str;
}
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
if ([self.myText isFirstResponder]) {
[self.myText resignFirstResponder];
}
}
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
NSNotification *notification = [NSNotification notificationWithName:@"notification" object:nil userInfo:@{@"name":self.myText.text}];
[[NSNotificationCenter defaultCenter] postNotification:notification];
NSLog(@"%@",notification.userInfo[@"name"]);
[self dismissViewControllerAnimated:YES completion:^{
}];
return YES;
}
以上是关于通知传值 notification的主要内容，如果未能解决你的问题，请参考以下文章